IN1203-PI M1, M2 & M3 Click Roller User Manual.pub
Contents
1. seice iPrecisign Instruments dees not provide any warranky ior any product From To Multiply From To Multiply some applications No liability is assumed for errors which may result from the use of any of these specifications or its calibration subjected to abnormal use Abnormal use includes misuse lb in oz in 16 oz in lb in 0625 modification unreasonable use neglect lack of maintenance lack of periodic ra FA PA Pe i calibration or use after the tool is significantly worn Ib in Ib ft 08333 Ib ft Ib in 12 Minimum PRODUCTION TORQUE GUIDE Ib in kg cm 1 1519 kg cm Ib in 8681 Fastener Type Tensile Material Body size of Outside Diameter PRECISION INSTRUMENTS SHALL NOT BE LIABLE FOR ANY INCIDENTAL z f SPECIAL OR CONSEQUENTIAL COSTS OR DAMAGES INCURRED BY THE oa om ares 9 om a oe Strength 2131415 6 8 10 1 4 5 16 3 8 7 16 1 2 9 46 5 8 3 4 7 8 1 1 1 8 1 1 4 1 3 8 1 1 2 PURCHASER OR OTHER including without limitations lost profits revenues AN em em AN anticipated sales business opportunities goodwill or interruption of business and lb in dNem 1 13 dNem Ib in 885 SAE 2 wee Tao ES Low carbon ATE 155 206310 eset 1100 any other injury of damage Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not Li kgm gee oH b ae o S A E 5 Steel 120000 P S I S carcs Hen Py J dl 1105 1500 1775 apply to you This wa2. a4 Pi oe 1 Hold the ratchet head or neck of the tool in one hand and grab the handle with the other E a ai PAL Lo E 1 Pull down on the lock ring This will unlock the adjustment setting l Twist the handle to the desired torque setting Use your thumb and index finger to push the lock ring back up This will lock the adjustment setting IN1249 9 07
3. film of lubricant on the working parts 2 To assure an accurate torque application keep your hand centered on the handle grip apply slow steady force until wrench releases stop applying force and allow wrench to reset 3 Don t forcibly unscrew the handle grip below the lowest torque reading 4 Don t forcibly turn the handle grip with the lock ring in the Lock posi tion This could damage the locking device 5 Do not apply more torque than the rated capacity of the torque wrench 6 Always store the torque wrench with the torque setting in the lowest position Precision Instruments Inc IN1203 PI Printed in U S A Why Measure Torque Modern consumer demand has forced industry to upgrade manufac turing efficiency Because of this manufacturers have expanded their production through special emphasis on such specifics as increased power per cubic inch power per dollar and product efficiency factor per pound In researching the need for increased product efficiency and the importance of complying with stringent safety standards manufacturers found that the nuts and bolts principle needed special attention Older products and machines were assembled using oversized parts having high safety factors and enormous strength These assemblies required minimal attention since nuts and bolts were much larger than necessary In order to increase product efficiency per pound smaller more efficient ma chinery had
4. to be produced using smaller yet stronger fasteners Because of this the nuts and bolts principles have new impor tance Threaded Fasteners Threaded fasteners are used on all types of machinery yet proper attention is often neglected Improper torque can cause enough distortion to fracture castings accelerate wear or cause running parts to seize It is a known fact that a simple half inch bolt may exert a force as high as 16 000 pounds enough force to lift four or five automobiles Quite obviously threaded fasteners require special attention Because of the importance nuts and bolts play in product efficiency the Society of Automotive Engineers has established standards of minimum tensile strength for all major classes of threaded fasteners used by industry Actually the minimum tensile strength is only potential considering practical usage Because fas teners are used to hold assembly components together stress caused by rapidly changing loads often complicates the fastener s job For example under stress the investment in extra potential strength of an SAE grade five bolt is lost and the quality of the entire machine lessened if it is not properly tightened Bolts not tightened properly may eventually loosen and fall out Even bolts secured with a locking devise may fail from fatigue When a bolt is properly tight ened extra locking devices are unnecessary For its cost the heat treated SAE grade five bolt offers the greate
5. 4 9 1 2 1 8 om o a e r a a e a a soos Ctog fer aoras sata a ae fee 1 2o 27 26 e ss rzs firo zs ss f 8 mm 0 315 119 153 148 191 178 230 250 306 417 500 TTT 10 mm 0 394 235 303 294 379 353 455 495 606 8 2 10 82000 P S I NI67 CU30 FE 1 4 25 fas e 1 2r far far fiss 23 36 so 67 115 155 295 315 475 ses 850 12 mm 0 472 411 529 427 662 616 7 9 8 6 10 5 14 17 o a oe Be Se ee S oe oe Se e mrs we eleele 16 mm 0 63 10 13 12 16 15 20 21 26 36 43 ETE Steel 18 mm 0 709 14 18 17 23 21 27 30 36 49 59 A All fi POUND FEET tth ked with aTe 0866 7 35 3A a re BD 57 70 95 Er Studs Use SAE 2 5 and 8 values when grade is known with nut of sufficient strength Igures are except those marked with an NOTE Use only when manufacturers specifications are not available these values are for stiff metal to metal joints and are based on 90 of proof load DO NOT USE for gasket joints or joints of soft materials S 0 International Standardization Organization Come Tapping Screw ASTERISK which are POUND INCHES Set up joint as it will be in production use 70 of over torque failure as production specifications These values are for lubricated fasteners f PRECISION INSTRUMENTS Setting the Precision Instruments M Line Click Type Torque Wrench keer n20 8 with the other EN E h ys UD A j oA LO j J c
6. E mail us at sales torqwrench com Visit us at www torqwrench com If Your Torque Wrench Needs Repair 1 Send it to an authorized Precision Instruments Service Center or give it to your Precision Sales representative Do not attempt to repair it yourself 2 If the warranty is no longer in effect your Precision Instruments Customer Service Representative will contact you with repair charges for your approval before being repaired 3 A series of testers are available from Precision Sales for checking the accuracy of your Torque Wrench See your Precision Sales representative for more information Minimum Bolt metric 5mm 6mm 7mm 8mm 10mm 12mm 14mm 16mm 20mm 24mm 30mm TORQUE PRODUCTS FULL WARRANTY PRECISION INSTRUMENTS WARRANTS THAT PRECISION TORQUE PRODUCTS ARE FREE FROM DEFECTS IN WORKMANSHIP AND MATERIALS Precision Instruments will repair or replace these tools which fail to give satisfactory service due to defective workmanship or materials This warranty for Precision Instruments torque products is for ONE YEAR from the date of the original purchase Repair or replacement shall be at the election and expense of Precision Instruments Except where unreasonable the LF Strength Mpa Proff Load MPa Property Class Tensile Diameter inch 0 197 0 236 0 276 0 315 0 394 0 472 0 551 0 63 0 787 0 945 1 181 Megapascal Note Use only when manufacturers specifications
7. N Periodic recalibration is necessary to maintain accuracy CAUTION Broken tools can cause injury Click Type Torque Wrenches To Set the Desired Torque 1 Unlock the torque wrench setting by pulling the lock ring toward the end of handle A description on the retaining ring also indicates how to unlock the torque wrench 2 The desired torque can be set by turning to the number indicated on the barrel Line up the zero on the sleeve with the center line on the barrel See figure 1 Then add the reading obtained by turning the sleeve clockwise See figure 2 Always approach the desired value from a lower setting 3 Lock the torque setting by pushing the lock ring toward the ratchet as shown by the description on the retaining ring The torque wrench is then ready for use Figure 1 Con WRENCH Figure 2 Set at 50 100 95 Set at 53 Correct Use of the Torque Wrench The correct amount of torque has been applied when the wrench re leases and moves freely for a few degrees before becoming rigid This release action will include an audible signal with all but small capacity models or at lowest settings The movement indicates that the selected torque has been reached The torque wrench can be used for either a clockwise or counter clockwise application A Few Suggestions 1 If the torque wrench has not been used for some time operate it sev eral times to re distribute a thin
8. Torque Wrench Pull Point Extension Length RS Torque setting of the torque wrench AxT This becomes RS when A B A Distance from the center of the square drive of the torque wrench to the center of the handle grip pull point B Length of the adaptor from the center of the square drive to the center of the nut or bolt Use only the length which is parallel to the handle See figure 3 T Torque desired This is the actual torque applied to the fastener Here is a typical problem What should the setting be when A is 12 B is 6 and T is 30 Ib ft AxT 12 x 30 360 RS or or or 20 pound foot A B 12 6 18 Therefore 30 pound foot of Torque will be applied at the fastener when RS is 20 pound foot Note If the torque wrench reads in pound foot then T should also be in pound foot T and RS should be in the same unit of meas urement A and B should also be the same unit of measurement Handle Major Scale 8ggp989889 wizr Yagegnonnn n Sage Sei p O Ei Lo s SEROREN PET sREkSnsRRe a besten Minor Scale Lock Ring N O i genes Bis RH T Q ETE vo z A Figure 3 Precision Instruments Inc 1846 Miner Street P O Box 1367 Des Plaines IL 60017 Sales toll free 866 TWRENCH 866 897 3624 Fax 847 824 7629
9. are not available these values are for stiff metal to metal joints and are based on 90 of proof load DO NOT USE for gaskets joints or joints of soft materials Industrial fasteners Institute 100 310 GENERAL TORQUE SPECIFICATION CHART FOR I F I METRIC FASTENERS when SAE10 oil is used as a lubricant 110 170 830 8 8 Torque Newton Metre 1820 120 1260 ia Coy 1040 1220 830 10 9 970 12 9 150 1480 2520 2940 Stress Area Outside Diameter Threads Per Inch In some cases it may be desirable to know the total clamping force obtained for a given torque Values are approximate SAE 30 engine oil was THREADED FASTENER TENSION GUIDE Figures Represent Pounds of Clamping Force 1 4052 1 8993 1 1 2 1 3 4 a 2 o e e u ef ef i ofei s4i 7if7i 6d s Sibinl 205 167 ft 101binf 410 316 35 J Tt y d S S S S 2oipin 820 632_ 630 37 40lbinf 1264 f 1264 674 sa S S SE S TT S S e Bolin 1348 f 1o 987 CCT CE oo d S S So tof 2043 1625 1482 1224 CC o ET 20i J 4o92 3250 2064 2448 2143 CC CT CT ST oo aot f 8503 5928 4896 aze sesa S S SC CEC Soo So sot fme 9796 esz 799 ros CT CT CT CT toot CT ST 12245 torte 749 8832 ros S S SC A ooo ooo doo oo oo fo fna nze f o f osa ooo o oo
10. educes highest friction area by as much as 90 5 Ball bearing thrust washer reduces effort in turning adjustment handle 6 Positive stops at both bottom and full scale prevents OVER STRESSING of internal mechanism 7 PATENT PENDING Precision Instruments pear shaped ratchet for strength and easy access to hard to reach fasteners The Precision Instruments Sealed Ratchet seals in permanent oil graphite lubrication and seals out damaging dust dirt and moisture You get a smooth running ratchet without the responsibility of routine maintenance 8 ALL steel construction for strength and durability No plastic to break or wear out NO CADMIUM or MERCURY used 9 PATENTED torque release roller calibration adjustment retains accuracy after passing GGG drop test 10 Nickel chrome plating for easy clean up and appearance 11 PATENTED full torque release roller allows virtual friction free click and release even at low torque settings 12 Made In The U S A Safety warnings and cautions CAUTION Torque Wrenches Overtorquing can cause breakage Wrench can be damaged while breaking fasteners loose Force against flex stops on flex head torque wrenches can cause head breakage An out of calibration torque wrench can cause part or tool breakage CAUTION Do not exceed rated torque Do not use a torque wrench to break fasteners loose CAUTION Do not force head of flex head torque wrenches against stops N CAUTIO
11. he best lubrication is a high stress type such as Never Seez Compound On non critical applications seventy two hour zinc phos phate and oil coating may be used This is an inexpensive coating ae is furnished on many industrial fasteners direct from the manu acturer Also the surface under the head of the bolt or under the nut whichever is the turned member is important Many manufactur ers use hard flat washers with no spring effect The hardness contributes to good correlation between the torque applied and the tension achieved The unbroken circular flatness contributes to dimensional control and consistency of clamping force from bolt to bolt Locking devices offer some protection against improper tight ening One of the latest trends is the use of nuts with physical disrupted threads to insure fastener locking This type of device is manufactured by several companies but should be examined for it s own merits Remember however that galling can disrupt the torque tension correlation when locking devices are used HOW TO COMPUTE TORQUE WHEN USING ADAPTORS If an adaptor or extension is attached to the square drive of a torque wrench and this adds to its length then the applied torque will be greater than the pre set torque A formula can be used to find what the preset set torque should be in order to obtain the correct applied torque Here is the formula Torque Wrench Pull Point x Torque Desired Pre Set Torque
12. o doo o tot TT TC 16091 14623 13261 11872 o wee LE 17061 15462 mesija CT 2000 S CT CT CT fo Ioas 17664 15830 13836 12113 25010 CT CT TT 24873 22100 ias 17296 15142 11985 goof TT 286523 23745 2076 18170 14382 13247 goofy ET o So To So S fo fo o faeo 27700 24227 19176 17663 soot oo oo So So 89576 34592 30284 23971 22079 19754 owt T ft ft 59m 4542 35956 33118 29631 Torque 22678 Stress area is calculated as the area of the circle whose diameter is the mean between the root and pitch diameters This closely approximates the actual stress condition Maximum theoretical clamping force cannot be obtained from threaded fasteners Additional stresses to the fastener are caused by the torsional forces of tightening used as lubricant Use of high stress lube may increase value 20 or more Highest values for a given size may only be obtained with heat treated bolts having minimum tensile strengths of 150 000 P S I or more CONVERSION OF VARIOUS UNITS OF TORQUE Caution Always use manufacturers specifications when available These specifications are approximate and may not be appropriate for product must be returned to Precision Instruments prepaid for warranty Convert Convert SPT a ae Te
13. r PRECISION INSTRUMENTS User Manual Micrometer Style Torque Wrench Specifications Drive Stock No Range Torque Increments Length Weight Flex ratchet models 3 8 M2FR100F 20 100 Ib ft 5 b ft 15 2 27 b Fixed ratchet models 1 4 M1R50H 10 50 Ib in 5 Ib in 9 87 89 Ib 1 4 M1R200H 40 200 Ib in 1 Ib in 9 87 89 Ib 3 8 M2R200H 40 200 Ib in 1 Ib in 9 87 89 Ib 3 8 M2R100F 20 100 Ib ft 5 b ft 15 2 31 Ib 3 8 M2R1000H 200 1000 Ib in 5 Ib in 15 2 31 Ib 1 2 M3R250F 50 250 Ib ft 1 Ib ft 25 4 13 Ib 1 2 M3R2500H 500 2500 Ib in 10 Ib in 25 4 13 Ib Fixed head models 1 4 M1F50H 10 50 Ib in 5 Ib in 9 68 83 Ib 1 4 M1F200H 30 200 Ib in 1 Ib in 9 68 83 Ib 3 8 M2F100F 20 100 Ib ft 5 b ft 15 2 31 Ib 3 8 M2F1000H 200 1000 Ib in 5 Ibin 14 29 2 05 Ib 1 2 M3F250F 50 250 Ib ft 1 Ib ft 24 50 4 13 Ib 1 2 M3F2500H 500 2500 Ib in 10 Ib in 24 50 4 13 Ib All models available in a Black Oxide Finish Add B to the end of the part number Example M2R1000HB Features and Benefits 1 Improved accuracy 3 of wrench setting Meets or exceeds ANSI ASME B107 14m 2 PATENTED Clockwise Counter Clockwise operation with internal balance cam to provide the same accuracy in either direction 3 PATENTED internal basic Calibration adjustment allows all calibration of instrument to be performed without disassembly 4 PATENTED roller plunger r
14. ri Pull down on the lock ring This i e Twist the handle to the desired torque setting e Use your thumb and index finger to push the lock ring back up This will lock the adjustment setting IN1249 9 07 Hold the ratchet head or neck of the tool in one hand and grab the handle will unlock the adjustment setting f PRECISION INSTRUMENTS Setting the Precision Instruments M Line Click Type Torque Wrench i 3 ae tt a ai af S oe Hold the ratchet head or neck of the tool in one hand and grab the handle Pull down on the lock ring This will unlock the adjustment setting Twist the handle to the desired torque setting Use your thumb and index finger to push the lock ring back up This will lock the adjustment setting IN1249 9 07 f PRECISION INSTRUMENTS Setting the Precision Instruments M Line Click Type Torque Wrench Tia Be At a ae Re Ss a no a af Ti og S Hold the ratchet head or neck of the tool in one hand and grab the handle with the other E Gj x4 ai Va LO W INUSCK Pull down on the lock ring This will unlock the adjustment setting if Twist the handle to the desired torque setting Use your thumb and index finger to push the lock ring back up This will lock the adjustment setting IN1249 9 07 f PRECISION INSTRUMENTS Setting the Precision Instruments M Line Click Type Torque Wrench J0 a 2 R j2 RE
15. rranty is your exclusive remedy and is in place of all other Ib ft Nem 1 356 Nem Ib ft 1376 rights and remedies You may have other rights which vary from state to state or Nem dNem 10 dNem Nem 10 oe AET ied 433000 P S Medium Carbon Alloy TTT Talal fo ol fo 4325 1825 2500 3000 country Nem kg cm 10 2 kg cm Nem 09807 Precision Instruments Inc SH soe ae sche Sh 9 807 ES S A E 8 Steel 150000 P S I Medium Carbon Alloy SE ea 29 refer wfc fac 1430 1975 2550 3200 Warranty Information P O Box 1306 ra SR em PR TT TT LY a i a es Rev 01 03 S Pe eames Per TTT Tele lel pele fol spol GENERAL TORQUE SPECIFICATION CHART FOR S 0 METERIC FASTENERS when SAE 10 oil is used as a lubricant T EE ompere Minimum a acnine ocrew o aie 1 so so w w a eap E peee eee Strength P S I 56900 71100 85340 113800 142200 170700 Machine Screw fi Proof kg mm2 22 6 29 1 28 2 36 4 33 9 43 7 47 5 58 2 79 2 95 Stainless 2 7 5 7 22 34 46 100 135 210 280 425 515 Load P S I 32150 41390 40110 51770 48220 62160 67560 82780 112650 135130 Ee ea Po ge oe oe a x i a NxN N 60000 P S I CU 63 ZN 37 17 27 37 49 78 104 160 215 325 400 Pro Yellow Brass ro s 2 Ss ee Kes Les GE 8 t w Silicone Bronze wr _Tworsi cuss znismn rare fw ford 1 eo em a Bolt Diameter Figures are KILOGRAM METER except those that are bolded which are KILOGRAM CENTEMETER Type B Metric Inch Machine Screw CU 3 8
16. st potential strength in standard production situations But to realize this potential the bolt must be properly tightened A Few Standard Precautions A few standard precautions will help solve fastener problems Since the fastener is usually the weakest link in any assembly special at tention is always necessary This means that an incorrectly tightened fastener will fail before the machine itself fails The job of determining proper bolt tightening is simple First examine the bolt itself to deter mine its torque limits Then check its maximum potential Naturally there are circumstances which will determine procedures and torque value for special situations but these are rare Caution Always con sult manufacturers specifications when available The most com monly used rule for determining proper torque for a fastener is to apply 70 of the torque necessary to cause failure The Production Torque Guide chart in this manual indicates these values Tightening to utilize the fastener s potential strength is a necessary part of the fastener story but it isn t the whole story Proper lubrication washers etc are just as important as proper tightening since as much as 80 of the torque applied to a fastener is lost through friction When the relationship between torque and tension is out of control reliability is out therefore proper lubrication is necessary to provide a constant clamping force over a series of applications T
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