Jet Tools J-7020 User's Manual
Contents
1. Operating Instructions and Parts Manual 10 Inch x 16 Inch Horizontal Band Saw Models J 7020 J 7040 Model J 7020 shown WHM TOOL GROUP Inc 427 New Sanford Road LaVergne Tennessee 30786 Part No M 414472 Ph 800 274 6848 Revision A2 04 09 www wmhtoolgroup com Copyright 2009 WMH Tool Group Inc Warranty and Service WMH Tool Group Inc warrants every product it sells If one of our tools needs service or repair one of our Authorized Service Centers located throughout the United States can give you quick service In most cases any of these WMH Tool Group Authorized Service Centers can authorize warranty repair assist you in obtaining parts or perform routine maintenance and major repair on your JET tools For the name of an Authorized Service Center in your area call 1 800 274 6848 MORE INFORMATION WMH Tool Group is consistently adding new products to the line For complete up to date product information check with your local WMH Tool Group distributor or visit jettools com WARRANTY JET products carry a limited warranty which varies in duration based upon the product MW stands for Metalworking WW stands for Woodworking Body Repair Kits Beam Clamps Bottle Jacks Chain Hoist Cable Pullers Manual DAY YEAR Cold Saws YEAR YEAR boven YEAR LIFETIME Hoists Air Pullers JCH Models Hoists Electric Palet Trucks Scissor Lift Tables WW Drill Presses Fastening Tools AL Metal forming Rigging Equ2. Lam N 641 NT C d GE P gt SS a Sonn 29 NY Dy N DS 4 9 6719 20 E 2 UN ener gt 951 rol SSL 84 26 Parts List ITEM PART NO NO DESCRIPTION 5713381 J 5713391 5518109 5519511 5519512 J 5713411 5713421 5713431 J 5713831 5712641 5674011 5674021 5713461 5519515 5713471 5713481 5713491 5519671 5713511 5713521 5713661 J 5713531 5519672 5519673 J 5713541 5519674 5519490 J 5713551 5519675 5513734 J 5713571 5519676 5519677 5713581 5713591 5713611 J 5713621 5519678 100 2 5519679 Head Screw 1 4 x 3 8 Blade Wheel Cover Label JET Logo Label Blade Size Label Warning Wire Brush Guard Handle Washer 1 2 Drive Wheel Washer 1 2 Blade Bi Metal 4 6 Vari Tooth 6 10 Vari Tooth Hose Hose Clamp Screw 3 8 x 1 1 4 Spring Washer 3 8 Screw 1 2 x 1 1 4 Setscrew 3 8 x 1 2 Screw 5 16 x 1 2 Screw 1 4 x 5 8 Washer 1 4 Blade Wheel Box Right Label Tension Label ID Support Bracket Seat Nut 1 2 Hex Cap Screw 1 2 x 2 5519680 5519506 5519681 5713631 5713661 5713651 5713661 5713671 5628371 5713691 5713711 5713721 J 571373 gt c PB 5713732 5519682 5519683 5713741 5513733 5713761 5713771 5713781 5713791 5713811 9100321 J 57
3. Screw 1 4 x 7 8 Hex Cap Screw 1 2 x 1 Spring Washer 1 2 Washer 1 2 Electrical Control Box Hex Cap Screw 5 16 x 3 4 TS 0720081 Spring Washer 5 16 TS 0680031 Washer 5 16 5519501 5712421 5712431 5712441 5712451 J 5712461 5712471 Label Pump Switch Work Stop Bracket Work Stop Rod Locking Screw Screw 1 2 Pump Cover Hand Wheel Assembly AS Ra a x BO x l3 A A ITEM PART NO NO DESCRIPTION 21 1 22 23 41 42 43 44 45 46 5519494 J 5712481 5712491 Set Screw 5 16 x1 2 Lead Screw Bracket Screw 5 16 x 1 4 TS 0720081 Spring Washer 5 16 TS 0680031 Washer 5 16 5712511 5519710 5514806 5712521 5712531 5712541 5712551 5712561 5712571 5519495 5519496 5712581 5712591 J 5712611 5712621 5712631 5712641 5712651 5712671 5712681 S 0051021 TS 0720081 TS 0680031 5712691 5712711 5712721 5712731 5712741 5712751 Vise Lead Screw Key 5x5x20mm Collar with Pin Lead Screw Bracket Acme Nut Button Retainer Screw M5 8 Needle Bearing CB3020 Bush 4mm Bush 2mm Washer 1 2 Pivot Shaft Pivot Bracket Screw 1 2 x 3 4 Retaining Ring S12 Washer 1 2 Spring Pull Pivot Screw 5 8 x 1 Regulating Seat Hex Cap Screw 5 16 x 5 8 Spring Washer 5 16 Washer 5 16 Nut 3 8 Screw 3 8 x 1 Protractor Stop Block Screw M6 x 12 Limit Switch Limit
4. If the clearance is incorrect the blade may track off the drive wheel CAUTION CHECK THE BLADE TO MAKE SURE THE WELDED SECTION IS THE SAME THICKNESS AS THE REST OF THE BLADE IF THE BLADE IS THICKERAT THE WELD THE GUIDE BEARINGS MAY BE DAMAGED If required adjust the guide bearings as follows 1 The inner guide bearing is mounted on a concen tric bushing and can not be adjusted 2 The outer guide bearing closest to the operator is mounted on an eccentric bushing and can be ad justed 3 Hold the bushing with a 3 4 inch wrench and loosen Eccentric Guide Bracket Bushing gt Locking Outer Roller Blade Guide Roller Figure 12 Adjustment of guide bearings INCORRECT Outer Inner Roller Roller CORRECT _ xb Locking Screw m m Blade Figure 13 Blade to bearing orientation the center locking screw with an Allen wrench see figure 12 4 Position the bearing by turning the bushing Set the clearance at approximately 0 001 inch The blade should be in a vertical position between the bearings See figure 13 5 Tighten the center locking screw with an Allen wrench while holding the eccentric bushing in position with the 3 4 inch wrench 6 Use the same procedure to adjust the other guide bearing 7 When the adjustment is correct the guide bear ings should rotate freely with slight pressure of the finger with the blade stopped 8 Adjust blade
5. Screw 5 16 x 5 8 5714121 Steel Brush Seat 5714461 Control Panel TS 0720081l Spring Washer 5 16 5714471 Screw 1 4 x 3 8 5714141 Hose Clamp 5516850 Washer 5713651 Spring Washer 1 4 5516849 Screw 5714161 crew 1 4 x 1 2 TS 0720081 Spring Washer 5 16 5628371 Spring Washer 1 2 gt gt Aa NN 4 AA c cx a 29x OS BR BR BR gt a AH AH HK 28 ITEM 5713941 5712881 5517141 5517140 5713861 5713761 5519696 5711091 PART NO DESCRIPTION QTY Screw 5 16 x 1 3 4 Spring Washer 1 2 Eccentric Shaft Bushing 2 Center Shaft Bushing Ball Bearing 6201ZZ Washer 1 2 Arm Stop Nut 1 2 29 30 31 32 JET WMH Tool Group Inc 427 New Sanford Road LaVergne Tennessee 30786 Ph 800 274 6848 www wmhtoolgroup com
6. workpiece can be damaged if the teeth are so far apart that they straddle the workpiece For very high production on cutting of special mate rials or to cut hard to cut materials such as stainless steel tool steel or titanium you can ask your industrial distributor for more specific blade recommendations Also the supplier who provides the workpiece material should be prepared to provide you with very specific instructions regarding the best blade and coolant or cutting fluid if needed for the material and shape sup plied Blade Break in Procedures New blades are very sharp and therefore have a tooth geometry which is easily damaged if a careful break in procedure is not followed Consult the blade manufacturer s literature for break in of specific blades on specific materials However the following proce dure will be adequate for break in of JET supplied blades on lower alloy ferrous materials 1 Clamp a round section workpiece in the vise The workpiece should be 2 inches or larger in diameter 2 Set the saw on low speed Start the cut with a very light feed rate 3 When the saw has completed 1 3 of the cut in crease the feed rate slightly and allow the saw to complete the cut 4 Keep the same hydraulic cylinder setting and begin second cut on the same or similar workpiece 5 When the blade has completed about 1 3 of the cut increase the feed rate Watch the chip formation until cutting is at its most ef
7. Screw 1 2 x 1 1 2 5713481 Spring Washer 3 8 5712941 Washer 1 2 5519507 Nut 3 8 J 5712951 J 5713171 Spring Bracket 5712961 Screw 1 2 x 1 1 2 5713181 Screw 5 16 x 1 2 5712971 Washer 1 2 5713191 Washer 5 16 J 5712981 Wise Jaw Right 5713211 Locking Wheel 5713011 Pin J 5713281 Swivel Bushing J 5713021 Electrical Cabinet Door 5519509 C Ring 5519499 Knob 5713241 Spring Washer 1 4 5519500 Plane gt KA AR 3 3 3 1 4 1 2 1 1 1 2 1 1 2 1 2 2 1 1 1 Piston Seal Kit 5512787 E M valve amp coil 5713371A Not shown in exploded view ITEM PART DESCRIPTION QTY 5713251 Screw 1 4 x 3 8 J 571326 Control Column 5713271 Screw 1 4 x 3 4 5519510 Nut 1 4 J 5713281 Swivel Bushing J 5713291 Control Box 5713311 Control Panel 5713321 Screw 3 16 x 1 4 5713331 5713341 5713351 5713361 5713371 E M valve complete 5712301 Hex Hd Screw 5712401 Flat Washer 5712501 Hex Hd Screw 5712601 5712701 5712801 5712901 1 INNA 5514613 5514616 5516855 Coolant Pump Switch AF B z z x e vsz 9 993 9 0 N aan NA N KSN S 201 Ve gt E _ 5 9 G a E z 17922 lt srl 2 d 71 68 021 621 891 1 7720 Nee Mw AA
8. Switch Bracket For Saw Serial No 704018 and Earlier For Saw Serial No 704018 and Later Spring Changed since Dec 96 Parts List Base ITEM PART ITEM PART NO NO DESCRIPTION NO DESCRIPTION TS 0051041 Hex Cap Screw 5 16 x 5 8 5507542 Model J 7020 115V 1 ph TS 0720081 Spring Washer 5 16 5713031 Model J 7020 220V 1 ph TS 068003 Washer 5 16 5512660 Model J 7040 220V 3 ph 5712761 Screw 3 8 x 1 5712661 Model J 7040 440V 3 ph 5712771 Spring Washer 3 8 5519502 Fuse Bracket 5712781 Locking Handle 5519503 Fuse 1A 5712791 Washer 1 2 5508409 Relay 115 220 NO 5511502 Hydraulic Cylinder 5713041 Magnetic Switch Assembly 2 1 2 In 115 220 1 Phase 5712811 Hydraulic Cylinder 5713001 Magnetic Switch Assembly 3 In ae 5519497 Cylinder Pin Bottom 220 440 3 Phase 5713051 Transformer 5712821 Cylinder Pin Top 5712831 Hydraulic Mounting eros Timna Sip 5713071 Spring Protective Plate asing 5712841 Screw 3 8 x 2 5713081 Nut 3 8 5712851 Spring Washer 3 8 J 571309 Protractor Seat 5712861 Washer 3 8 5519505 Pin 5 x 32mm J 5712871 Protractor Vise Block 5713111 Knob 5 12881 Spring Washer 1 2 5713121 Screw 5 16 x 1 2 5712891 Spring Pull Rod S 068003 1 Washer 5 16 5712911 Spring 30mm Old d E E pring Vvasner 5519498 Spring 32mm New 5713151 Screw 3 8 x 1 9712921 Angle scale 5713161 Washer 3 8 5712931
9. clockwise until the left vise jaw is parallel with the workpiece Tighten the pivot screw and angle locking screw on the left vise jaw Clamp the workpiece in position 5 After completing the cut turn the clamping hand wheel counterclockwise and slide the left jaw away from the workpiece 10 Set Workpiece Angle AgainstComer SS Setting Block KL of Right Vise Jaw Left Vise Jaw Angle Locking Screw Figure 6 Ad Angle Block Locking Handle Angle Pointer Figure 7 Angle setting block Installation and Adjustment of Work Stop Figure 5 Securing workpiecThe work stop is used to set up the saw for making multiple cuts of the same length see figure 8 Install and adjust the work stop as follows Stop Post Locking Lever Wing Screw Stop L Bracket Knob Figure 8 Work stop 1 Insert the end of the stop rod in the hole in the front right side of the work table 2 Tighten the wing screw to secure the rod in place 3 Install the stop post in the channel on the back of the stop L bracket Install the locking lever in the threaded hole in the stop post Snug up the lock ing lever 4 Install the locking knob in the hole in the side of the stop L bracket 5 Slide the assembled stop L bracket onto the stop rod Position the stop post against the work piece and tighten the knob in the stop L bracket The stop post can be moved left or right as required to place i
10. enne KAKAK nnns 12 Test Cutting to Verify Adjustment Accuracy nennen nennen nnne nennen nnne nennen 13 Adjustment of the Limit Switch 13 R 13 locnm 13 p 13 Han GING gt 0 M D 14 Changing ihe Drive Bell encsi iien EE 14 Replacing the Drive Motor anake Kaba aaa bak a AANE GEK nee errr teen ne A ANAA AE E KENE AA KAKE EA KAE D e ANA ENEE 14 Adjusting the Counterbalance Spring aaa 14 Replacing the Drive Wheel reiecit a na andren 15 Replacing Idler Wheelor Idler Bearing een 15 Adjusting the Blade Guides eee nennen nennen sinn nennen nennen nennen nnn 15 Replacement of Carbide Blade Guide dac aan 15 Replacement of Guide Bearings sse eene 16 Replacement of Blade Edge Bearitigs alininn 16 Replacement of the Wire 16 Machine ET M 16 Uncrating and Spotting PA BA AA KAKAK KA BE KG ORAK EKA D T
11. or education purposes revert to a One Year Warranty This warranty does not cover defects due directly or indirectly to misuse abuse negligence or accidents normal wear and tear improper repair or alterations or lack of maintenance HOW TO GET SERVICE The product or part must be returned for examination postage prepaid to a location designated by us For the name of the location nearest you please call 1 800 274 6848 You must provide proof of initial purchase date and an explanation of the complaint must accompany the merchandise If our inspection discloses a defect we will repair or replace the product or refund the purchase price at our option We will return the repaired product or replacement at our expense unless it is determined by us that there is no defect or that the defect resulted from causes not within the scope of our warranty in which case we will at your direction dispose of or return the product In the event you choose to have the product returned you will be responsible for the shipping and handling costs of the return HOW STATE LAW APPLIES This warranty gives you specific legal rights you may also have other rights which vary from state to state LIMITATIONS ON THIS WARRANTY WMH TOOL GROUP LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT EXCEPT AS STATED HEREIN ANY IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS ARE EXCLUDED SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LON
12. variation on any test piece should be no more than 0 003 inch per side per inch of stock diameter Adjustment of the Limit Switch 1 The limit switch is provided to shut off the saw motor when the workpiece is cut through 2 To setthe limit switch loosen the jam nut on the limit Switch stop figure15 3 Adjust the stop as required and retighten jam nut L T Limit L Switch gt Switch Roller Maintenance Cleaning 1 Clean off any preservative on machine surfaces 2 After cleaning coat the machined surfaces of the cut off saw with a medium consistency machine oil Repeat the oil coating process at least every six months 3 Clean up accumulated saw cuttings after use Make sure the lead screw is kept free of saw cuttings and other material that would cause damage 4 Clean the chip sludge from the coolant tank The frequency should be determined by how often the saw is used Lubrication Lubricate the following components atthe specified frequencies and using the lubricants as defined 13 14 1 Ball bearings the bearings are lubricated and sealed periodic lubrication is not required 2 Blade guide bearing the bearings are lubricated and sealed lubrication is not required Inspect periodi cally 3 Idler wheel bushing the bearings are lubricated and sealed lubrication is not required Inspect periodi cally 4 Lead screw bearing housing lubricate with light oil
13. 1344 J 571384 5519506 Gear Box Assembly Key 7x7x40mm Key 7 mm Pulley Cover Knob Label Speed Chart Gear Box Pulley Belt Motor Pulley 5713131 5713851 57138514 5519684 Base Plate Rod Bracket ITEM PART NO NO DESCRIPTION 31 Washer 5 16 81 Spring Washer 5 16 Hex Cap Screw 5 16 x 1 1 4 Hex Cap Screw 5 16 x 1 2 Bushing 9mm 31 Washer 5 16 Washer 5 16 Washer 1 4 Spring Washer 1 4 Washer 1 4 Screw 1 4 x 3 8 Spring Washer 1 2 Washer 5 16 Screw 3 8 x 1 Screw 5 16 x 5 8 Motor 1 5 HP 115 220 1 Phase Motor 2 HP 220 440 3 Phase Label Motor 1 5HP 115 230 3 Phase 2HP 220 440 3 Phase Bolt 1 2 x 3 4 Key 7 mm Washer 1 2 Washer 5 16 Screw M16 x 30 Screw 1 2 x 3 4 Washer 1 2 Bearing 6205Z Idler Wheel Blade Guard Hex Cap screw 5 16 x 1 2 81 Spring Washer 5 16 Washer 5 16 Left B Right Blade Guide Brkt Tube a A WN o V DAR NO NO DESCRIPTION DESCRIPTION 5717138 Eccentric Shaft Assy 5714181 Gib 5517142 Center Shaft Assy 5714191 Screw 1 2 x 3 4 5713871 Blade Guide Tung Carb 5714211 Screw M8 x 20 5713661 Washer 1 4 5519688 Spring Washer MB 5713651 Spring Washer 1 4 5714221 Knob 5519508 Socket Cap Screw 5714231 Flexible Nozzle 1 4 x 1 5519689 Flow Valve 5713881 Elevating Block 5714241 Blade Wheel Shaft 5519508 He
14. 5 7 setting Blade SPCC e E bar a 7 Raising Lowering the Saw Head nenn 8 Controlling the Cut Hydraulic Feed Control ennemis 8 Evaluating Cutting 8 5 8 Blade Break in Procedures eiit ee ne erg 9 Work Setup 9 Securing the Workpiece for Square GUS nenne 9 Adjusting the Vise for Angle Cuts 2244444ennsssnnnnnnnnnsnnnnnnnnnpnnnnnnnnnnpnnnnnnnnnnppnnnnnnnnnnppnnnnnnnnnprnnnnnnnnnnr rn 9 Installation and Adjustment of Work Stop 10 SLANG SAW aan aaa as 10 Coolant NK KERA 11 Coolant Mixture and Quantity aira rana taa a ea ak KE EN Sa KANEA NARA KENAA NA KEKERENGAN GERAK KANEA EEE RENEA ANA KAN KG KENAN E AR ANANE nnns 11 tup 11 Blade Tracking eene e enne ren hene nens 11 Factory or Field 11 Blade Guide Bearing Adjustment sss
15. E KA ERAS 16 iege 17 BIST rnnt 17 Lirgesg me ANENG 19 TROUDICSOOUING EE 19 Replacement Parts SPBRSBRRPRDREREEEPPERFERREREEEFFERPREEEESEEEEELEFEEEENLEEPEEFEFLLEEGEEUFEREREEEEFEEEEEREREELEEEEFEEFEESEEELEEEEBEFEEEEREELELFFEEELFFESER 20 Replacement a abala Balara ari 20 Parts List hen in ehem 22 P arts Eist eei eee ca tee once He a ea a NG aa aa 26 General Specifications Model Stock Number J 7020 414472 J 7040 414478 The JET Models J 7020 J 7040 Horizontal Cut Off an oil bath transmits smooth and positivepower to the Bandsaws ruggedly built precision machines de blade This drive system coupled with the recirculating signed for either wet or dry applications The 2 HP coolant system keeps the blade running cool and true motor along with the worm gear reduction drive train in which results in longer blade life Specifications Capacity 10 Round 10 x 10 Square 9 x 16 Rectangle 100 to 350 feet per minute variable speed Motor Model J 7020 1 5 H P 1 phase 110 220V Model J 7040 2 H P 3 phase 220 440V Blade Size 1 x 035 x 135 Blade Guides Adjustable 6 point contact combination bearing and carbide Length 79 Width 31 Height 41 Rapid act
16. G THE IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU WMH TOOL GROUP SHALL IN NO EVENT BE LIABLE FOR DEATH INJURIES TO PERSONS OR PROPERTY OR FOR INCIDENTAL CONTINGENT SPECIAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR PRODUCTS SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU WMH Tool Group sells through distributors only The specifications in WMH catalogs are given as general information and are not binding Members of WMH Tool Group reserve the right to effect at any time without prior notice those alterations to parts fittings and accessory equipment which they may deem necessary for any reason whatsoever JET branded products are not sold in Canada by WMH Tool Group Table of Contents General SpecifiCatiOris 2 4 raa a ajaa ari a EE 4 Machinery General Safety Warnings een are 5 Operating PFECAUTIONS Tm 5 Safety Instructions on Sawing Systems ana 6 General Electrical Cautions sssssssssssseeene eene nennen mene nennen EEOSE rnnt nnn nrr rne n nre nnn nennen nein 6 7 Operating ss asasaran 7
17. HE PUMP 1 The blade guides are fitted with coolant fittings Coolant is provided to the fittings through intercon necting tubing The coolant is dispensed directly onto the saw blade 2 Adjust the coolant flow valves on the top rear of the saw head as required to provide the desired flow The flow should be no more than the blade can draw into the workpiece by blade movement 3 The coolant flow can be stopped in two ways 1 By using the coolant pump switch on the electrical equipment box or 2 By closing the coolant flow valves on the top rear of the saw head Coolant Mixture and Quantity The general purpose coolant is a mixture of water soluble oil and water Mix one part of soluble oil TRIM SOL to ten parts of water one quart oil ten quarts of water Eleven quarts of coolant are required for the coolant pump to operate properly There are numerous coolants on the market that are formulated for special applications Consult your local distributor for details in the event you have a long range production task or are required to cut some of the more exotic materials Adjustments The efficient operation of the cut off saw is depen dent upon the condition of the saw blade If the perfor mance of the saw begins to deteriorate the first item that you should check is the blade If a new blade does not restore the machine s cut ting accuracy and quality refer to the Troubleshooting section or the blade manufactu
18. ad with power off Evaluating Cutting Efficiency Is the blade cutting efficiently The best way to de termine this is to observe the chips formed by the cut ting blade If the chip formation is powdery then the feed rate is much too light or the blade is dull If the chips formed are curled but colored that is either blue or straw colored from heat generated during the cut then the feed rate is too high If the chips are slightly curled and are not colored by heat the blade is sufficiently sharp and is cutting at its most efficient rate Blade Selection The cut off saw is provided with a saw blade that is adequate for a variety of cut off jobs on a variety of common materials A 4 6 vari tooth bi metal blade 5674011 and a 6 10 vari tooth bi metal blade 5674021 are available from JET See Setting Blade Speed for the speeds recom mended for various materials These selections while appropriate for many shop cutting needs do not en compass the wide variety of blades of special configu ration tooth pitch and set and special alloys for cut ting unusual or exotic materials A coarse blade could be used for a solid steel bar but a finer tooth blade would be used on a thin wall tube In general the blade choice is determined by the thickness of the material the thinner the material the finer the tooth pitch A minimum of three teeth should be on the work piece at all times for proper cutting The blade and
19. ade track too far away from wheel flanges 11 Guide bearing worn 1 Blade speed too high for feed pres sure 2 Blade is too coarse Bad cuts rough Probable cause Suggested remedy 1 Clamp work securely 2 Check Machinist s Handbook for speed feed appropriate for the ma terial being cut Check Machinist s Handbook for recommended blade type Adjust blade tension to the point where the blade just does not slip on the wheel Start the motor before placing the saw on the workpiece Adjust blade tracking Adjust guides Longer annealing cycle Use a finer tooth blade Try alower blade speed Decrease spring tension Increase feed pressure hard spots Reduce speed increase feed pressure scale Increase feed pressure by reduc ing spring tension Increase tension to proper level Do notrun blade at idle in on mate Adjust vise so it is square with the blade Always clamp work tightly in vise Decrease pressure Adjust guide bearing clearance to 0 001 inch 0 002 inch maximum Gradually increase blade tension Move blade guide bar closer to work Replace blade Check blade see Figure 3 Tighten blade guide assembly Tighten blade guide bearing assem bly 10 11 19 speed Adjust blade tracking Replace worn bearing 1 Reduce blade speed and feed pres sure 2 Replace with finer blade Troubleshooting continues 1 Blade i
20. ccentric bushing in the guide support until the bearing contacts the blade Replacement of Blade Edge Bearings 1 Remove the capscrew from the blade edge bearing being replaced and discard the bearing Be care ful not to lose the spring washer that separates the bearing from the floating block see figure 19 2 Insert the capscrew into the new bearing Replace the spring washer onto the capscrew and re install into the floating block 3 If re adjustment is necessary loosen the pivot capscrew and move the floating block so that the blade edge is close to the guide support but cannot touch the bottom surface ofitwhen the sawblade is cutting a workpiece Cap Screw Blade Edge Ner N Bearing gt A lt Figure 19 Blade edge bearing replacement Replacement of the Wire Brush 1 Loosen four knobs securing the blade cover Lift the cover and swing it backward 2 Remove the attaching screw spring washer and washer Remove and discard the brush see figure 20 3 Install replacement brush and secure with screw spring washer and washer Figure 20 Wire brush Machine Setup The saw delivered to you has been adjusted at the factory A number of test pieces have been cut using the saw to verify the accuracy of cutting Therefore the only setup operations required before releasing the saw for service are spotting the saw and establish ing the electrical connections to the motor Uncrating and Spotting Spo
21. e or be fore any attempt is made to change the drive belts or before any periodic service or maintenance is performed on the saw Remove allloose items and unnecessary workpieces from the area before starting machine Bring adjustable saw guides and guards as close as possible to the workpiece servicing or adjusting machinery Eyewear shall be impact resistant protective safety glasses with side shields complying with ANSI Z87 1 specifica tions Use of eye wear which does not comply with ANSI Z87 1 specifications could result in se vere injury from breakage of eye protection See Figure B 10 Nonslip footwear and safety shoes are recom mended See Figure C 11 Wear ear protectors plugs or muffs during e x tended periods of operation See Figure D 12 The workpiece or part being sawed must be securely clamped before the saw blade enters the workpiece 13 Remove cut off pieces carefully keeping hands away from saw blade 14 Saw must be stopped and electrical supply dis connected before reaching into cutting area 15 Avoid contact with coolant especially guarding your eyes Introduction This manual includes the operating and maintenance instructions forthe JET 10 inch by 16 inch Cut Off Band Saw Models J 7020 J 7040 This manual also includes parts listings and illustrations of replaceable parts Operating Instructions Controls The operating controls for the saw are pro
22. ect the motor from all electrical power Un plug the motor if it is plugged into a socket Shut off the power to the branch and remove the con nection to the junction box if the motor is hard wired to the branch 2 Remove the drive belt from the drive motor pulley see Changing the Drive Belt 3 Remove motor pulley 4 Open the motor junction box and disconnect the power cord wires from their terminals 5 Remove the nuts washers and bolts that secure the motor to the mounting plate 6 Installation of a new motor is a reversal of the above steps Adjusting the Counterbalance Spring The counterbalance spring is located at the right rear of the saw head The counterbalance spring is used to adjust the amount of down force the saw head puts on the workpiece when the feed rate control valve is fully open 1 Raise the saw arm to its full upright position and lock it in position 2 To adjust tension on the spring loosen the two nuts on the threaded rod of the spring pivot post Adjust the tension as required 3 Tighten the two nuts against the pivot post 4 The saw can now be returned to service Replacing the Drive Wheel 1 Remove the blade see Changing Blades 2 Remove the screw spring washer and washer from the speed reducer shaft 3 Pull the wheel from the speed reducer shaft Re move the drive key from the speed reducer shaft 4 Inspection Examine drive edge and shoulder of the wheel for da
23. ed in how to use them correctly They should read and understand the Operating Instruc tions and Parts Manual as well as all labels affixed to the machine Failure in following all of these warn ings can cause serious injuries Machinery General Safety Warnings 1 Always wear protective eye wear when operating machinery Eye wear shall be impact resistant protective safety glasses with side shields which comply with ANSI Z87 1 specifications Use of eye wear which does not comply with ANSI Z87 1specifications could result in severe injury from breakage of eye protection Wear proper apparel No loose clothing or jewelry which can get caught in moving parts Rubber soled footwear is recommended for best footing Do notoverreach Failure to maintain proper work ing position can cause you to fall into the machine or cause your clothing to get caught pullingyou into the machine Keep guards in place and in proper working order Do not operate the machine with guards removed Avoid dangerous working environments Do not use stationary machine tools in wet or damp locations Keep work areas clean and well lit Avoid accidental starts by being sure the start Switch is OFF before plugging in the machine Never leave the machine running while unattended Machine shall be shut off whenever itis not in op eration Disconnect electrical power before servicing Whenever changing accessories or general main tenance is done
24. edge bearings so they just touch the back edge of the blade see figure 19 Test Cutting to Verify Adjustment Accuracy Test cuts can be used to determine whether or not you have adjusted the blade accurately Use 2 inch round bar stock to perform these test cuts as follows 1 With the bar stock securely clamped in the vise make a cut through the bar stock See figure 14 2 Mark the top of the bar stock 3 Move the bar stock about 1 4 inch past the blade so you can begin a second cut 4 Rotate the bar stock 180 degrees so the mark you made is now at the bottom of the cut 5 Make a cut through the bar stock 6 Use a micrometer to measure the thickness varia 1 Clamp in vise aga mar top of barstock here 2 Cut off a slice of the bar stock 3 Rotate stock in vise ans is at bottom 4 Cut off a new slice from the 5 Measur here 7 Differences between measurements at edges of disc should be less than 003 inches per inch per side of stock diameter 6 measure gt here Figure 14 Cutting a test disc tion of the disk you have cut from the bar stock Mea sure at the top and bottom of the disk The saw blade can be considered correctly adjusted when the variation measure is no more than 0 012 inch across the face of the disk If you do not have a piece of 2 inch bar stock avail able for a test cut use a larger diameter test piece rather than a smaller one The maximum thickness
25. ficient rate and allow the saw to complete the cut see Evaluating Blade Effi ciency The blade is now considered ready for regular service Work Setup Securing the Workpiece for Square Cuts 1 Raise the saw head refer to Figure 5 2 Slide the left vise jaw far enough to the left to allow the workpiece to be placed in the vise 3 Place the workpiece on the work table If the workpiece is long provide support at the other end It may also be necessary to provide additional down ward clamping to hold the workpiece securely on the work table 4 Turn clamping hand wheel clockwise to clamp the workpiece in position against the fixed right vise jaw 5 After completing the cut turn the clamping hand wheel counterclockwise and slide the left jaw away from the workpiece Clamping Hand Left Vise Jaw Work Table Figure 5 Securing workpiece Adjusting the Vise for Angle Cuts 1 Referring to Figure 6 loosen the angle locking screw and the pivot screw on the left vise jaw 2 Turn the locking handle on the round angle setting block counterclockwise to unlock the block Slide the block until the pointer on the block is aligned with desired angle see figure 7 Tighten the lock ing handle to set the angle 3 Set the workpiece in the vise Put the front end of the workpiece against the corner of the right vise jaw Put the rear end of the workpiece against the angle setting block 4 Turn clamping hand wheel
26. htly in the counterclockwise direction This assures that the blade is not touching the shoulder of the wheel 11 Shut off the saw 12 Hold the hex adjustment screws with a wrench and tighten the center locking screws Make sure the hex adjustment screws do not move while tightening the center screws 13 Install the two blade guide bearing brackets Posi tion the guides so the bearings just touch the blade 14 Install the left blade guard 15 Close the saw head cover Tighten all four knobs Motor ON Upper Wheel Rotating Figure 11 Checking blade to wheel clearance using paper strips Blade Guide Bearing Adjustment Proper adjustment of the blade guide bearings is critical to efficient operation of the cut off saw The blade guide bearings are adjusted at the Factory They should rarely require adjustment When adjustment is required adjust immediately Failure to maintain proper blade adjustment may cause serious blade damage or inaccurate cuts It is always better to try a new blade when cutting performance is poor If performance remains poor af ter changing the blade make the necessary adjust ments If a new blade does not correct the problem check the blade guides for proper spacing For most effi cient operation and maximum accuracy provide 0 001 inch clearance between the blade and the guide bear ings The bearings will still turn freely with this clear ance
27. ing 3 jaw design Coolant System Recirculating system standard with each machine complete with 1 GPM pump 8 gallon reservoir and coolant applied through the blade guides A WARNING Misuse of this machine can cause serious injury For safety machine must be set up used and serviced properly Read understand and follow instructions in the Operating Instructions and Parts Manual which was shipped with your machine When Setting up Machine Always avoid using machine in damp or poorly lighted work areas Always be sure the machine support is se curely anchored to the floor or the work bench When Using Machine Always wear safety glasses with side shields See ANSI Z87 1 Never wear loose clothing or jewelry Never overreach you may slip and fall When Servicing Machine Always disconnect the machine from its electri cal supply while servicing Always follow instructions in Operating Instruc tions and Parts Manual when changing acces sory tools or parts Never modify the machine without consulting JET Corporation You the Stationary Power Tool User Hold the Key to Safety Read and follow these simple rules for best results and full benefits from your machine Used properly JET s machinery is among the best in design and safety However any machine used improperly can be rendered inefficient and unsafe It is absolutely mandatory that those who use our products be properly train
28. ip WW Benchtop Screw Jacks WW Dust Collectors Hand Tools lachine Accessories Contractor prem Mill Drills Service Jacks Tools Trolleys Geared WW Dust Filters Striking Tools Mobile Bases Tools Industrial Milling Machines Stackers Trolleys Plain WW Dust Fittings Vises no precision Safety Equipment Air Tools Light MW Bandsaws Surface Grinders Winches Manual WW Jointers Specialty Items Industrial MW Drill Presses Tapping WW Air Filtration WW Lathes amps Vise Accessories Lubrication MW Finishing Trolleys Air WW Bandsaws WW Planers WW Shapers Equipment Trolleys Electric WW Buffers WW Sanders WW Tablesaws MW Lathes Web Slings MW Precision Vises Winches Electric Warranty reverts to 1 Year Warranty if woodworking WW products listed above are used for industrial or educational purposes WHAT IS COVERED This warranty covers any defects in workmanship or materials subject to the exceptions stated below Cutting tools abrasives and other consumables are excluded from warranty coverage WHO IS COVERED This warranty covers only the initial purchaser of the product WHAT IS THE PERIOD OF COVERAGE The general JET warranty lasts for the time period specified in the product literature of each product WHAT IS NOT COVERED Three Year Five Year and Lifetime Warranties do not cover products used for industrial or educational purposes Products with Three Year Five Year or Lifetime Warranties that are used for industrial
29. l the blade tension indicator reads 2000 pounds 6 Operate the saw at low speed and observe the track ing of the blade If tracking needs to be adjusted refer to Blade Tracking Adjustment 7 Adjust the bearings on the upper edge of the blade until they just contact the blade see figure 19 8 Check the guide bearings and the carbide guides to make sure they are just contacting the sides of the blade 9 Install the left blade guard making sure there is ample clearance with the blade 10 Make a test cut to make sure the blade tracks prop erly during operation Adjust tracking as required see Blade Tracking Adjustment Changing the Drive Belt 1 Disconnect the electrical power source from the cut off saw to prevent any possibility of accidental motor start up 2 Setthe arm atthe full horizontal position 3 Remove the knob on the drive belt cover Remove the drive belt cover to expose the V belt and pul leys 4 Remove two screws nuts and washers from back of saw head support Push on the motor support bracket to pivot the motor upward to loosen the ten Sion on the belt 5 Remove the worn belt 6 Put the replacement belt in the pulleys Allow the motor to pivot downward 7 Install the two screws nuts and washers in back of saw head support and through the motor support bracket 8 Install the drive belt cover Install and tighten the knob on the drive belt cover Replacing the Drive Motor 1 Disconn
30. lt the idler wheel Do not turn either of the other two adjustment screws Turn the adjustment screw until the blade is touching the shoulder of the idler wheel NOTE Turning the screw inward causes the blade to move toward the shoulder of the wheel Turning the screw outward causes the blade to move away from the shoulder 7 Turn the single hex adjustment screw so the blade starts to move away from the shoulder of the wheel then turn the single hex adjustment screw in the other direction so the blade stops then moves slowly toward the shoulder WARNING KEEP FINGERS CLEAR OF THE BLADE AND WHEEL TO AVOID INJURY 8 Turn the single hex adjustment screw to stop the motion of the blade on the wheel as it gets closer to 11 12 the wheel shoulder Put a 6 inch length of paper between the blade and the wheel as shown in figure 11 The paper should not be cut as it passes be tween the wheel shoulder and the blade 9 Turn the single hex adjustment screw a small amount Repeat the insertion of the paper between the wheel shoulder and the blade until the paper is cut in two pieces NOTE You may have to repeat the check with the paper several times before the blade and the shoulder cuts the paper into two pieces Do not hurry the ad justment Patience and accuracy here will pay off with better more accurate quieter cutting and much longer machine and blade life 10 When the paper is cut turn the hex adjustment screw slig
31. mage Replace the wheel if dam aged 5 Install the key in the keyway in the speed reducer shaft Align the keyway in the wheel with the key in the speed reducer shaft Reinstall the wheel on the speed reducer shaft 6 Install the screw spring washer and washer in the end of the speed reducer shaft 7 Install the blade see Changing Blades Replacing Idler Wheel or Idler Bearing 1 Remove the saw blade see Changing Blades 2 Remove the screw spring washer and washer from the idler shaft 3 Remove the idler wheel Remove the bearing from the idler wheel 4 Inspection Examine the drive edge and shoulder of the idler wheel for damage Replace the wheel if damaged 5 Inspect bearings for damage and smooth operation Replace if faulty 6 Install the bearing in the idler wheel Install the idler wheel on the idler shaft 7 Install the screw spring washer and washer in the idler shaft 8 Install the blade see Changing blades Adjusting the Blade Guides The cut off saw has adjustable blade guide supports see figure 17 The blade guide supports allow you to set the blade guides for varying widths of workpieces To make accurate cuts and prolong blade life the blade guide supports should be set to just clear the workpiece to be cut Tape TPT T Blade Guide Supports Figu
32. monthly see exploded figure page 21 5 Lead screw lubricate with light oil monthly see ex ploded figure page 21 6 Hydraulic cylinder pivot lubricate with light oil every 6 months see exploded figure page 21 7 Blade tension screw lubricate with grease every 6 months see exploded figure page 24 8 Blade brush bearing lubricate with light oil monthly see exploded figure page 24 9 Gear box check oil once a year 10 Change coolant on a frequency appropriate to the type of coolant being used Oil based coolants can sour Refer to the coolant supplier s instructions for change frequency 11 Coolant tank clean every 6 months or as required Changing Blades WARNING SHUT OFF ALL ELECTRICAL POWER TO THE MACHINE 1 Loosen four knobs securing the blade cover Lift the cover and swing it backward 2 Remove the blade guard mounted to the left blade guide support WARNING ALWAYS WEAR LEATHER GLOVES WHEN HANDLING SAW BLADE TO AVOID INJURY FROM THE SAW TEETH 3 Turn the blade tensioning hand wheel clockwise to relieve tension on the blade Loosen the blade enough to remove the blade from the idler and drive wheels Remove the blade from between the blade guides 4 Install the new blade between the blade guide bear ings and the carbide blade guides Install the blade over the drive and idler wheels 5 Turn the blade tensioning hand wheel counterclock wise to tighten the blade Tighten the blade unti
33. n adjustment mechanism on the right end of the saw Speed increases when the adjustment knob is turned counterclockwise Speed decreases when the knob is turned clockwise 2 Aplacard on the drive belt guard provides recom mended speeds for various materials 3 Aspeed indicator is provided on the barrel of the adjustment mechanism The indicator provides speed indications in feet per minute and meters per minute The meters per minute values are shown in parenthesis on the indicator 4 The feed rates on the placard are expressed in meters per minute The feed rate graduations available on the indicator may not match the recommended feed rate An approximate speed may therefore be required For example to seta speed rate of 25 meters per minute the indicator would be set about midway between 21 meters per minute and the 30 meters per minute gradu ations WARNING TO CHANGE SPEED THE SAW MOTOR MUST BE OPERATING 5 Turn the speed adjustment knob to the desired rate setting as determined by the material being cut Coolant Pump Switch 35 Figure 2 Coolant pump switch Raising Lowering the Saw Head 1 Lift the saw head using the handle on the far left side of the saw head 2 To lower the saw head press the green pushbutton on the right side of the control panel 3 To adjust the feed rate adjust the feed rate control valve knob on the top of the saw head see figure 3 4 To lower the sa
34. oltage to the motor To mini mize power losses and to prevent motor overheating and burnout the use of wire sizes for branch circuits or electrical extension cords according to the following table is recommended This saw should be grounded in accordance with the National Electrical Code and local codes and ordinances This work should be done by a qualified electrician The saw should be grounded to protect the user from electrical shock Conductor Length AWG American Wire Gauge Number No 14 No 14 No 14 No 12 No 12 No 8 0 50 Feet 50 100 Feet Over 100 Feet Safety Instructions on Sawing Systems 1 Always wear leather gloves when handling saw 9 Always wear protective eye wear when operating blade The operator shall not wear gloves when operating the machine All doors shall be closed all panels replaced and other safety guards in place prior to the machine being started or operated Be sure that the blade is not in contact with the workpiece when the motor is started The motor shall be started and you should allow the saw to come up to full speed before bringing the saw blade into contact with the workpiece Keep hands away from the blade area See Fig ure A Remove any cut off piece carefully while keeping your hands free of the blade area Saw must be stopped and electrical supply must be cut off before any blade replacement or adjust ment of blade support mechanism is don
35. on the machine electrical power to the machine must be disconnected before work is done 9 Maintain all machine tools with care Follow all maintenance instructions for lubricating and the changing of accessories No attempt shall be made to modify or have makeshift repairs done to the machine This not only voids the warranty but also renders the machine unsafe 10 Machinery must be anchored to the floor 11 Secure work Use clamps or a vise to hold work when practical It is safer than using your hands and it frees both hands to operate the machine 12 Never brush away chips while the machine is in operation 13 Keep work area clean Cluttered areas invite ac cidents 14 Remove adjusting keys and wrenches before turn ing machine on 15 Use the right tool Don t force a tool or attach ment to do a job it was not designed for 16 Use only recommended accessories and follow manufacturers instructions pertaining to them 17 Keep hands in sight and clear of all moving parts and cutting surfaces 18 All visitors should be kept at a safe distance from the work area Make workshop completely safe by using padlocks master switches or by removing starter keys 19 Know the tool you are using its application limi tations and potential hazards General Electrical Cautions Wire Sizes Caution For circuits which are far away from the electrical service box the wire size must be increased in order to deliver ample v
36. re 17 Blade guide supports 1 Loosen the knob on the blade guide support and slide the guide left or right as required Repeat for the other blade guide 2 Setthe blade guide supports as required to accom modate the width diameter ofthe workpiece The blade guides should be positioned so the guides do not contact the workpiece as the saw head moves downward through the workpiece Replacement of Carbide Blade Guide Refer to Figure 18 1 Remove the cap screw and remove the carbide guide Discard the carbide guide 2 Install the replacement carbide guide on the guide bearing support Install the cap screw Set the guide so it just contacts the side of the saw blade 3 Using a machinist s square check squareness of the blade to the table Concentric Bushing Cap Screw Typical lade Guide Bearings Carbide Guides 2 Eccentric Bushing Cap Screw gt Typical p Figure 18 Carbide blade guides and guide bearings 15 16 Replacement of Guide Bearings Referring to Firgure 18 remove the cap screw from the bearing being replaced Separate the bushing and cap screw from the bearing Discard the bearing NOTE There is a light press fit between the bearing and the bushing 2 Install bushing in replacement bearing Install cap screw through bushing and into guide support 3 Ifthe bearing being replaced is on an eccentric bush ing install the bearing on the operator side of the blade 4 Turn the e
37. rer s guide for condi tions to consider and adjustments that can be made to increase the life of the blade To change the blade refer to Changing Blades in the Maintenance section To adjust the blade tracking refer to the following procedures Blade Tracking Adjustment Blade tracking has been tested at the factory Ad justment is rarely required when the blade is used prop erly or if the blade is correctly welded See figure 10 for location of blade tracking adjustment screws Blade Tracking Hex Adjustment Screws Single Adjustment Screw Center Locking Screws Figure 10 Blade tracking and tensioning Factory or Field Procedure 1 Raise the saw head enough to allow the saw motor to operate 2 Loosen four knobs securing the blade cover Lift the cover and swing it backward 3 Remove the blade guard mounted on the left blade guide support 4 Remove both blade guide bearing brackets NOTE Maintain proper tension at all times using the blade tensioning mechanism 5 Loosen the center locking screws in all three hex adjustment screws on the blade tensioning mecha nism see figure 10 CAUTION WHILE PERFORMING THE FOLLOWING KEEP THE BLADE FROM RUBBING EXCESSIVELY ON THE SHOULDER OF THE WHEEL EXCESSIVE RUBBING WILL DAMAGE THE WHEELAND OR THE BLADE 6 Start the saw Slowly turn the single hex adjustment screw at the rear of the tracking mechanism to ti
38. ring diagram 115 Volt 220 Volt 1 3 2 4 1 2 3 4 NG N L1 L2 Figure 22 Connection diagram for 1ph motor L1 L2 DOWN SOLINOID 17 18 460 220 VAC 60 HZ 3 Ph 460 220 460 2209 KAKA X rem 1100 ES OO blade UP N C DOWN SOLINOID Figure 24 Model 7040 cut off saw wiring diagram Figure 25 Connection diagram for 3ph motor Troubleshooting Fault 1 Material loose in vise 2 Incorrect speed or feed Excessive blade breakage Teeth too coarse for material Incorrect blade tension Saw blade is in contact with workpiece before the saw is started Blade rubs on the wheel flange Misaligned guides Cracking at weld Premature blade dulling Blade teeth too coarse Blade speed too high Inadequate feed pressure Hard spots in workpiece or scale on in workpiece Work hardening of material espe cially stainless steel Insufficient blade tension Operating saw without pressure on workpiece Workpiece not square with blade 2 Feed pressure too fast Guide bearings not adjusted prop erly Inadequate blade tension Span between the two blade guides too wide Dull blade Incorrect Bad cuts out of square blade speed Blade guide assembly is loose Blade guide bearing assembly loose 10 Bl
39. s binding in the cut i isti 1 Decrease feed pressure mn 2 Blade tension too high 2 Decrease blade _ ides on TET 1 Replace blade guides Blade guide bearings notadjusted 2 Adjust blade quide bearings da 3 Blade guide bearing bracket is g loose 3 Tighten blade guide bearing bracket 1 Blade tooth pitch too coarse for 4 Use blade with finer tooth pitch workpiece 2 Feed too slow feed too fast 2 Increase feed pressure and or NER blade speed 3 Workpiece vibrating 3 res securely 4 Gullets loading up with chips 4a Ab Use blade with a coarse tooth pitch reduce feed pressure Brush blade to remove chips 1 Blade re We high 1 Reduce tension on blade 2 Drive bell tension 100 high 2 Reduce tension on drive belt Blade too coarse for workpiece es Use blade with fine tooth pitch Motor r nnina tao fiat pecially with tubular stock i 4 Blade too fine for workpiece espe 4 Use blade with coarse tooth pitch cially with heavier soft material 5 Speed reducer gears require lubri 5 Check speed cation 1 Pump motor is burned out 1 Replace pump 2 Screen filter on pump is clogged 9 Clean screenffilter 3 Impeller is loose 3 Tiahteni coolant flow Tighten impeller Coolant level 4 Add coolant to reservoir Excessive speed reducer noise vibration N V belt is too tight Countering spring not
40. t against the work piece Starting the Saw WARNING NEVER OPERATE THE SAW WITHOUT BLADE COVERS IN PLACE AND SECURED CAUTION MAKE SURE THE BLADE IS NOT IN CON TACT WITH THE WORKPIECE WHEN THE MOTOR IS STARTED DO NOT DROP THE SAW HEAD ON THE WORKPIECE OR FORCE THE SAW BLADE THROUGH THE WORKPIECE 1 Raise the saw head With the saw motor off pull the red release button on the electro magnetic valve and check the rate at which the saw head lowers 2 Raise the saw head Push in red release button 3 Clamp the workpiece in the vise See figure 9 for examples of workpieces in the vise 4 Be sure the blade is not in contact with the workpiece when the motor is started 5 Start the motor and allow the saw to come up to speed 6 Slowly set the saw down onto the workpiece Adjust cutting speed with feed rate control valve 7 DO NOT DROP THE SAW HEAD OR FORCE THE CUT Let the weight of the saw head provide the cutting force 8 The saw will automatically shut off at the end of the cut Rounds Flats strips Knock off sharp edge here with ile J gt Channels Angles H Knock off sharp edge here with file s Squares rectangles Hexagonals Tees Figure 9 Placing workpieces in the vise Coolant Flow CAUTION THE COOLANT PUMP MUST BE SUB MERGED BEFORE OPERATING TO PREVENT DAM AGE TO T
41. t the saw where it makes the most sense for the operations you will probably be doing If you are go ing to be doing cut off work on very long pieces of stock allow plenty of room for the stock and the infeed and outfeed supports Remove the saw from the ship ping skid and discard any hold down devices that were used to secure the saw to the skid 4 Close the blade cover and secure with four knobs Electrical Observe the following when connecting to the power source The cut off saw wiring diagrams are provided in Figures 17 and 18 WARNING JET RECOMMENDS THAT ANY WIRING INVOLVING HARD WIRING OF THE SAW TO A BRANCH ORANY CHANGE OF VOLTAGE SUPPLIED TO THE MOTOR BE PERFORMED BY ALICENSED ELECTRICIAN 1 Make sure the saw is disconnected from the power Ti 220 110 FI 1 men 110 115 7 source or that the fuses have been removed break ers tripped in the circuit in which the saw will be connected Make sure you put a warning placard on the fuse or circuit breaker to prevent accidental electrical shock If you are installing the motor power cord into a re ceptacle make sure to use the appropriate plug If you are using hard wired connections to a junc tion box connect the wires in the box and close the box Install the fuses or reset the breaker The saw is now ready for service 2 blade UP N C Figure 21 Model J 7020 cut off saw wi
42. tensioned properly 1 Reset V belt tension 2 Increase spring tension Replacement Parts To order parts or reach our service department call 1 800 274 6848 between 7 30am and 6 00pm CST Monday through Friday Having the Model Num ber and Serial Number of your machine available when you call will allow us to serve you quickly and accu rately Order replacement parts from WMH Tool Group Inc 427 New Sanford Road LaVergne Tennessee 30786 Ph 800 274 6848 Identify the replacement part by the part number shown in the parts listing Be sure to include the model number and serial number of your machine when ordering replacement parts to assure that you will receive the correct part 21 22 Parts List J 5712251 J 5712261 J 5712271 5519485 J 5712281 J 5712921A 5519486 5712291 5512101 5712331 5519487 5712341 J 5712351 J 5712361 5519491 5519492 Base Foot Left Foot Right Coolant Reservoir Stopper PT 3 8 Coolant Pump 115 220 1 Phase 220 440 3 Phase Adapter PT 3 8 Pan Head Screw 1 4 x 5 8 Filter Screen w Screw Hose 5 16 Hose Clamp Chip Pan Pump Bracket Work Table Label Made in Taiwan Rivet 2mm TS 1482011 Hex Cap Screw M6x 10 TS 155004 1 Washer M6 TS 2361061 Spring Washer 6 5712371 5712381 5712391 5712641 J 5712411 5519488
43. vided in a control panel on the left side ofthe machine The con trol panel is mounted on a pivoting tube The pivoting tube allows the operator to position the control panel in a convenient location Power on Light Motor Emergency Reset Button Saw Head Pushbutton Figure 1 Control panel 1 A power on light is provided on the left side of the control panel The power on light indicates when power is connected to the machine 2 emergency stop button is provided on the control panel The emergency stop button pro vides a means to rapidly cut off electrical power 3 The saw motor pushbutton switch starts the saw motor and the E stop button stops the saw motor 4 Agreen pushbutton switch is provided to the right ofthe emergency stop pushbutton The pushbutton opens an electro magnetic valve in the hydraulic cylinder circuit Opening the valves allows the saw head to move downward and put the saw blade in contact with the workpiece 5 Ared release button on the electro magnetic valve provides a means to lower the saw head when power to the machine has been discon nected see figure 4 6 The rate at which the saw head moves downward is controlled by a hydraulic feed rate control located on the top rear of the saw head see figure 3 7 A coolant pump switch is provided on the electri cal equipment box on the back of the machine see figure 2 Setting Blade Speed 1 The blade speed is controlled by a
44. w head with power off pull and turn the red knob manual override on the electro mag netic valve see figure 4 Controlling the Cut Hydraulic Feed Control The weight of the saw arm provides all the force needed to move the saw blade through the workpiece In fact if the full weight of the arm is allowed to make the cut rapid blade wear and poor cutting accuracy will result A hydraulic feed control is provided that gives the operator a means to control the speed and efficiency of cutting The hydraulic cylinder is attached between the saw base and the saw head The hydraulic cylinder resists movement of the saw head in the downward direction However the hydraulic cylinder offers no resistance when the saw head is raised upward The amount of downward force can be controlled by using the feed rate control valve When the valve is opened slightly the saw head will move downward The further the valve is opened the faster the saw head will move downward The feed control is adjusted by the operator until the saw is operating efficiently This is usually determined by observing the chip formation See Evaluating Blade Efficiency for more information on cutting efficiency Control Box Blade Tensioning Blade Guide a Hand Wheel Supports an Control Saw Control Vise Clamping Hand Wheel Figure 3 Controls Red Release Button Electro Magnetic Valve Figure 4 Lowering he
45. x Socket Cap Screw 5714251 Threaded Nut 1 4 x 1 5519690 Pan Head Screw 5713651 Spring Washer 1 4 M6x12 5713661 Washer 1 4 5519691 Tension Scale 5713891 Active Block 5714261 Screw 5 16 x 1 2 5713911 Screw 1 4 x 5 16 J 5714271 Slide Bracket 5632831 Bearing 608ZZ 5519692 Nut TS 072008 1 Spring Washer 5 16 5519693 Set Screw 5713941 Screw 5 16 x 1 3 4 5714281 Washer 5713951 Spring Washer 5 16 5714291 Relief Valve J 5713961 Guide Support 5714311 Connection Head 5518423 Label Blace Orientation 5519694 Rubber Clamp 5713971 Angle Scale 5519695 Pan Head screw M5x8 5713981 Screw M5 x 0 8 5507790 Bearing 51104NJK J 5713991 Guide Support Mount 5714331 Bow Handle J 5714011 Guide Support Bracket 2S left 5714351 Washer 5519685 Rubber Clamp 5519686 Head screw 5 8 5714021 Screw 1 2 x 1 J 5714381 Slide Bracket 5713761 Washer 1 2 5714391 Tension Shaft 5714031 Knob 9714411 Key 5 mm 5714041 Washer 3 8 5714421 Screw 3 8 x 2 1 2 5714051 Locking Block 5713481 Spring Washer 3 8 5714061 Screw 5 16 x 1 2 J 5714431 Cil Pressure Seat J 5714071 Guide Support Bracket TS 0680081 Washer 5 16 Right TS 0720081 Spring Washer 5 16 5714161 Bolt 1 4 x 1 2 5519489 Hex Cap Screw 5713661 Spring Washer 1 4 5 16 x 5 8 5714111 Wire Brush J 5714441 Cover Cap 5519687 Shaft 5714451
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