IN1202-PI D, DX & DS User Manual.pub
Contents
1. Ta fas sa sa 128 180 280 aoo 40 oro 1520 2130 2850 3450 4700 6100 8200 8 00 1300 18000 24000 31000 Cap Screw Tempered 2 Socket Set 542000 P S High Carbon Quenched 70 18 29 43 63 11001146 Screw Tempered N TN ps n Tapping Screw Set up joint as it will be in production use 70 of over torque failure as production specifications Machine Screw Stainless 18 8 oo eale eee eae m a ee Mee ie I 316 2 7 4 5 7 22 34 46 100 135 210 280 425 515 750 Stainless Made SeeN enone st CU 63 ZN 37 17 27 37 49 78 104 160 215 325 400 595 Yellow Brass mnoors_ ouezem faaam faerat to fa faz rs a0 so on so ae or faofasof aos faso few Machine Screw penny P S1 CU 3 8 4 9 1 2 1 8 13 20 27 36 62 83 128 170 255 315 460 Aluminum MN 3 9 acral topsa Nar cuan reta Jam e faa e oa fai far ar fis 2s as so or stot a6 ote ars roo oo Silicone Bronze Type B Studs Use SAE 2 5 and 8 values when grade is known with nut of sufficient strength Sems Heat masas 10psi wei e e e ef ar or feo eoe do All figures are POUND FEET except those marked with an ASTERISK WHICH ARE pound inches These values are for lubricated fasteners Zeroing the Precision Instruments D Line Dial Type Torque Wrench The wrench is shipp2. 310 380 600 650 830 46 48 58 88 98 109 Torque Newton Metre Cee e a e a 0 2365 5 7 8 14 18 0 276 8 1 14 24 30 0 315 12 16 20 34 44 0 394 23 32 40 70 8 0 472 40 56 70 120 150 0 551 65 90 110 190 240 0 787 200 330 520 740 0 945 340 580 920 1260 1480 1181 eso 1820 2520 Megapascal 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 gaskets joints or joints of soft materials LF L 1220 970 12 9 12 21 35 50 100 180 280 440 860 2940 Industrial fasteners Institute Fastener Type Minimum PRODUCTION TORQUE GUIDE Tensile Material Body size of Outside Diameter Strength Ta ee cl ed Gs eos eal Re Poet ep el ease oc ee 2 1 2 2 3 4 3 eases es freee AA eee fff oe EA S A E 5 Steel 120000 P S ia sli Heat EERE reat 0 19 g Ei 78 114 154 257 382 Ea 704 1105 1500 1775 2425 3150 4200 4550 6550 7175 3000 16000 oe S A E 7 Steel 133000 P S I Medium Carbon Alloy HH 1325 1825 2500 3000 4000 5300 7000 7 aa 15500 21000 27000 ES S A E 8 Steel 150000 P S Medium Carbon Alloy ii 900 1430 1975 2550 320 o eso 7600 p200 1200 17w 23000 29000 EENE scogomoooo trang avv 9 Carbon Guenched
3. B explained below Method A 1 Turn the dial until the pointer is on zero 2 Place the Torque wrench on the fastener 3 Pull until the pointer reaches the torque required Method B 1 Turn the dial until the pointer is at the torque required On right hand threads set to the left of zero On left hand threads set to the right of zero 2 Place the Torque wrench on the fastener 3 Pull until the pointer reaches zero 2 To make it easier to read the dial of all except the Memory Needle models it is possible to place the pointer in any desired position Turn the dial until the pin bears against the pointer Then turn the dial 1 4 turn past the position desired Finally turn the dial in the other direction The pointer will follow the pin back until it reaches the position desired Then proceed with either Method A or B as explained above 3 To use the Indicator Light Model for clockwise applications turn the dial until the gold pointer is set at the desired torque the red pointer for counterclockwise applications Place the Torque wrench on the fastener and pull until the light comes on Check the bulb and battery if the light fails to light when the pointer touches the gold contact pin 4 To use the Memory Needle Model in the clockwise direction rotate knurled knob counter clockwise on top of crystal until Memory Needle contacts main pointer Next turn the dial bezel counter clockwise until the Memory Needle is on zero
4. Place the Torque wrench on the fastener and pull on the wrench handle until the desired torque is reached When the pressure is released the main pointer will return to zero and the Memory Needle will remain at the peak torque reached For counter clockwise direction use reverse above procedure The Memory Needle feature can be used to record peak torque when the Torque wrench dial may not be visible Be careful not to overtorque the fastener or Torque wrench 5 Each time the Torque wrench is used be sure that the dial and pointer are set correctly 6 After each use of the Torque wrench make sure the pointer returns to zero or the pre set value If not re set the dial and pull again 7 For an accurate reading the final turn of the nut should be made with the Torque wrench 8 The hub of the pointer contains a clutch which allows the stem to turn within the hub if a sudden impact occurs This important safety factor protects the dial mechanism from shock damage If a fastener suddenly breaks it may change the pointer setting Reset the dial and proceed as before 9 Work on fasteners with clean and lubricated threads 10 Your Torque wrench does not need lubrication Do not attempt to oil it 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
5. 37 475 582 792 95 heads Perinch 32 32 2 2 18 t6 1 23 12 a7 to 9 8 7 7 6 5 2 22 Load P S 32150 41390 40110 51770 48220 62160 67560 82780 112650 135130 C 205 1657 T Z ONI ONION OI ONION oN ON tobin 410 316 35s OT Too Too Too Soo Soo So S S S S S So Property Clas A E E E S a a E a a sobin 14264 1264 ez sa Too Too Too To S S S S S So eL pance ae Figures are KILOGRAM METER except those that are bolded which are KILOGRAM CENTENETER 80 inl 1948 1082 987 0 0 OT Sani 0236 W9 63 61 79 74 95 103 126 172 206 foal f 2043 16 1482 1224 Jo CCT CT To To To T S S f Smm 0315 119 153 148 191 178 230 250 306 417 500 aot f f f 4o92 3250 2964 amas 243 f TCT CT Too Too To To To To O 10 mm 0 394 235 303 294 379 353 455 495 606 8 2 10 dof f oo 5928 aeae a2ee seo CT CT So So So So 12 mm 0 472 411 529 427 662 616 7 9 8 6 10 5 14 17 sow mej 9796 esz mza vos oo oo oo To So oo 14 mm 0 551 654 8 4 8 2 10 5 10 12 13 17 23 27 fool T1225 torte 9749 esz vos T CT To CE T o 16 mm 0 63 10 13 12 16 15 20 21 26 36 43 fast TT Too To fna ne mosa f sess TT So So 18 mm 0 709 14 18 17 23 21 27 30 36 49 59 Soit TT To To feoai f 14e2s 13261 merz f oo o oo Soo Soo So So 22 mm 0 866 27 35 34 44 41 52 57 70 95 114 bet To To T
6. INSTRUMENTS User Manual r PRECISION Features and Benefits Extremely Accurate Accurate within 2 of reading from 20 of full scale to full scale Guaranteed against defect in workmanship and materials for one year from the date of delivery providing that they have been used according to instructions Exclusive Torsion Bar Design This patented design features a connecting arm directly from the square drive to the easy to read dial This enables the user to read the actual twist of the square drive And since a lever principle isn t used hand hold position 1s not critical unlike the split or bending beam competitive torque wrenches Compact Design and Tapered Nose This provides ease of operation by allowing clearance where operating space is limited Large Shock Resistant Dials Protected by dial guards the large easy to read dial numbers are set off against a contrasting color With many increments on the scale guess work is eliminated Dial Pointers Work in either right or left hand direction The dial can also be rotated so the user can torque to zero from the desired value Memory Needle Models Retain the highest torque reading for easy reference For Quality Control testing a Memory Needle Model displays the maximum reading obtained This is excellent for verifying production torque applications Indicator Light Models Indicates when a preset torque level is achieved Set the dial to the required torqu
7. O fro f saez f isesi fand oo oo Soo So So LS 0 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 International Standardization Organization 2000 TT foo aeea 15830 13836 fars TE a50 E23 zoo ires 17206 15142 1985 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 Caution Always use manufacturers specifications when available These specifications are approximate and may not be appropriate for some applications No liability is assumed for errors which may result from the use of any of these specifications Precision Instruments Inc 1846 Miner Street P O Box 1367 Des Plaines IL 60017 E mail us at sales torqwrench com Visit us at www torqwrench com Sales toll free 866 TWRENCH Fax 847 824 7629 ome _
8. __ _ __ 26508 zsras aoe em vse mar dT ot ii e 2rr00 a ern ross id Od somal _ _ _ __ _ __ sre ease so2ee 23071 a ore O mow O CG CG 2 Saos fone 2s ar wow __ o O Teose aro are sosoe ooze orraa swo O O O S E e o GEM f er S2 asss farser T _ _ __ __ __ AE a A a SM soot _ _ __ __ A ste 169624 120068 A a a a SOS woot 1 assess 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 Stress area is calculated as the area of the circle whose diameter is the mean between the root and pitch diameters This was 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 closely approximates the actual stress condition Maximum theoretical clamping force cannot be obtained from threaded heat treated bolts having minimum tensile strengths of 150 000 P S I or more fasteners Additional stresses to the fastener are caused by the torsional forces of tightening 866 897 3624 36289 5mm 6mm 7mm 8mm 10mm 12mm 14mm 16mm 20mm 24mm 30mm Minimum Tensile Strength Mpa Proff Load MPa Property Class Bolt Diameter metric GENERAL TORQUE SPECIFICATION CHART FOR I F 1 METRIC FASTENERS when SAE10 oil is used as a lubricant 225
9. d the outer dial ring with your index finer and thumb WIN 100 m E 900 hut Se a gt lt And turn the outer dial ring to line up the main pointer with the zero mark Note This will not affect the calibration of the tool IN1247 10 07 100 NT Ee ww CURE IN1247 10 07 Wrench ch is shipped with the wo l 4 Y N If the main pointer ever comes to rest at an angle other than straight forward hold the outer dial ring with your index finer and thumb gt Se linl nz And turn the outer dial ring to line up the main pointer with the zero mark Note This will not affect the calibration of the tool
10. 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 product must be returned to Precision Instruments prepaid for warranty service Precision Instruments does not provide any warranty for any product or its calibration subjected to abnormal use Abnormal use includes misuse modification unreasonable use neglect lack of maintenance lack of periodic calibration or use after the tool is significantly worn PRECISION INSTRUMENTS SHALL NOT BE LIABLE FOR ANY INCIDENTAL SPECIAL OR CONSEQUENTIAL COSTS OR DAMAGES INCURRED BY THE PURCHASER OR OTHER including without limitations lost profits revenues anticipated sales business opportunities goodwill or interruption of business and 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 apply to you This warranty is your exclusive remedy and is in place of all other rights and remedies You may have other rights which vary from state to state or country Precision Instruments Inc Warranty Information P O Box 1306 Des Plaines IL 60017 Rev 01 03 IN1202 PI Printed in U S A Why Measure Torque Modern consumer demand has forced industry to upgrade manu
11. e and the light will go on when the proper torque is reached This is particularly useful when the dial is not visible Shock Resistant Dial Mechanism Built to withstand rough usage the mechanism which provides the expanded dial readings is shock protected with resilient and overload members Consistent Readings The accuracy is not affected by the way it is held Pull on the end of the handle or close to the dial and the reading remains the same Handle extensions are furnished with many models which allow even greater flexibility Compact The square drive is located at the very end of the torque wrench so that it can be used in areas where space is at a minimum Friction Free Operation A floating connecting beam between the torque measuring element and the dial mechanism has no bearing points and consequently there is no friction drag This floating beam construction together with the precision of the dial mechanism renders the torque wrench practically friction free Accurate and Dependable All Precision Instrument D Torque wrench Series meets or exceeds all applicable requirements of ANSI ASME B107 14M GGG W 00686C BS6073 1988 ISO6789 TO GET ACCURATE TORQUE READINGS Your torque wrench is a precision instrument Given proper care it will give many years of satisfactory use For best results and accurate readings follow the instructions given below 1 Set the dial of the Torque wrench by using method A or
12. e 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 1 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 B 12 6 18 A Therefore 30 pound foot of Torque will be applied at the fastener when RSE 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 measurement A and B should also be the same unit of measurement Figure I Formula values for a Torque wrench GENERAL TORQUE SPECIFICATION CHART FOR I S O METERIC FASTENERS when SAE 10 oil is used as a lubricant THREADED FASTENER TENSION GUIDE Figures Represent Pounds of Clamping Force Tensile kg mm2 i ap ee op 199 li Stress Area 2 8917 4 5951 Strength P S I 56900 71100 85340 113800 142200 170700 Outside Diameter 2 1 2 Proof kgimm2 226 291 282 364 339 4
13. ed with the main pointer lined up on the zero mark and pointing straight forward If the main pointer ever comes to rest at an angle other than straight forward hold the outer dial ring with your index finer and thumb ALLII SS m noo 100 XG fuli aor FA Os xX AS And turn the outer dial ring to line up the main pointer with the zero mark Note This will not affect the calibration of the tool IN1247 10 07 Zeroing the Precision Instruments D Line Dial Type Torque Wrench The wrench is shipped with the main pointer lined up on the zero mark and pointing straight forward If the main pointer ever comes to rest at an angle other than straight forward hold the oufer dial ring with your index finer and thumb WIS 100 MIIS G 700 linl Al SS lt a7 KOW S And turn the outer dial ring to line up the main pointer with the zero mark Note This will not affect the calibration of the tool IN1247 10 07 Zeroing the Precision Instruments D Line Dial Type Torque Wrench The wrench is shipped with the main pointer lined up on the zero mark and pointing straight forward Zeroing the Precision Instruments D Line Dial Type Torque The wren main pointer lined up on the zero mark and pointing straight forward If the main pointer ever comes to rest at an angle other than straight forward hol
14. em 9 807 and is furnished on many industrial fasteners direct from the manufacturer Also the surface under the head of the bolt or under the nut whichever is the turned member is important Many manufacturers 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 tightening 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 click type 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 Dial Reading Torque Wrench Pull Point x Torque Desired or a Pre Set Torque Torque Wrench Pull Point Extension Length AxT This becomes RS when A B RS Dial reading or torque setting of the wrench A Distance from th
15. facturing 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 machinery had to be produced using smaller yet stronger fasteners Because of this the nuts and bolts principles have new importance 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
16. sult manufacturers specifications when available The most commonly 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 The best lubrication is a high stress type such as Never Seez Compound On non critical applications seventy two hour zinc phosphate and oil coating may be used This is an inexpensive coating CONVERSION OF VARIOUS UNITS OF TORQUE Convert Convert From To Multiply From To Multiply Ib in oz in 16 oz in lb in 0625 Ib in lb ft 08333 lb ft Ib in 12 lb in kg cm 1 1519 kg cm Ib in 8681 lb in kg m 011519 kg m Ib in 86 81 Ib in Nem 133 Nem Ib in 8 85 Ib in dNem 1 13 dNem Ib in 885 lb ft kg m 1382 kg m lb ft 7 236 lb ft Nem 1 356 Nem lb ft 7376 Nem dNem 10 dNem Nem 10 Nem kg cm 10 2 kg cm Nem 09807 Nem kg m 102 kg m N
17. tensile strength for all major classes of threaded fasteners used by industry Actually the minimum tensile strength is only potential considering practical usage Because fasteners 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 tightened extra locking devices are unnecessary For its cost the heat treated SAE grade five bolt offers the greatest 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 solve fastener problems Since the fastener is usually the weakest link in any assembly special attention 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 determine 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
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