Torque Wrench

Torque Wrench

Torque Tester

Components

Transducer

A torque transducer, also known as a load cell, is an electronic device used to convert force into an electrical signal. This conversion is indirect and happens in two stages. Through a mechanical arrangement, the force being sensed deforms a strain gauge. The strain gauge converts the deformation (strain) to electrical signals. A load cell usually consists of four strain gauges in a Wheatstone bridge configuration. Load cells of one or two strain gauges are also available. The electrical signal output is typically in the order of a few millivolts and requires amplification by an instrumentation amplifier before it can be used. The output of the transducer is plugged into an algorithm to calculate the force applied to the transducer. There are several styles available for torque transducers. Rotary, stationary (reaction), and inline are used for different calibration and audit purposes.

Digital Display

A key component of modern torque testers is the digital display. A digital display is used to measure the output signal from the transducer and calculates that reading into a torque value that is displayed on screen. In most cases the display and transducer are contained together inside a housing. This is known as a esktop Torque Tester. External rotary and stationary transducers can be used with portable displays (handheld torque analyzers).

Rundown Fixture (Joint Simulator)

A rundown fixture, also known as a joint simulator, is used during the calibration process to help test power tools (electric screwdrivers, air screwdrivers, pulse tools, cordless screwdrivers, nutrunners, etc). A joint simulator is placed on top of the transducers. An adapter bit is inserted into the power tool and is mated to top of the joint simulator. By using springs of different stiffness or stacking Belleville washers in set patterns, the joint simulator can replicate soft, medium, or hard joints. This is important when trying to repeat how a tool may be used on an actual process.

See also

Torque

Torque wrench

Foot-pound force

Newton metre

Torsion

External links

Wikimedia Commons has media related to: Torque Testers

Brief History of Torque Measurement

Flexible Assembly, Torque tester manufacturer and integrator

Fastening: How Tight Is Tight?

Categories: Engine technology | Physical quantities | Rotation | Wrenches

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Replacement Head for Spoke Torque Wrench $15.15 Excel Replacement Head for Spoke Torque Wrench

Torque Wrench Adapter $13.99 This unique tool allows you to properly torque 2-stroke cylinder base nuts Extends the reach of your 3/8-drive torque wrench by 3 inches Made from chrome vanadium tool steel with satin chrome finish Multiply your torque wrench readings by chart supplied with tool for proper torque specifications

Adjustable Torque Wrench Adapter $42.99 Motion Pro Adjustable Torque Wrench Adapter Torque any fastener with a combination wrench or Allen wrench Will work with 6mm (1/4 in) through 19mm (3/4 in) combination wrenches Will work with 6mm and 8mm Allen wrenches Heat-treated steel with a black oxide finish 3/8" square drive is rated for a maximum torque of 90 ft-lbs Wrenches not included

Pneumatic Torque Wrench $68.51 A pneumatic torque wrench is a planetary torque multiplier or a gearbox that is mated to a pneumatic air motor. At the end of the gearbox is a reaction device that is used to absorb the torque and allows the tool operator to use it with very little effort. The torque output is adjusted by controlling the air pressure. These planetary torque multiplier gearboxes have multiplication ratios up to 4000:1 and are primarily used anywhere accurate torque is required on a nut and bolt, or where a stubborn nut needs to be removed. The pneumatic torque wrench is sometimes confused with a standard impact wrench, because it looks similar, but is actually a totally different tool. A pneumatic torque wrench is driven by continuous gearing, and not by the Hammers of an impacting wrench. This is why a pneumatic torque wrench has very little vibration, and excellent repeatability and accuracy. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 88 Publication Date: 2010/08/30 Language: English Dimensions: 6.00 x 9.02 x 0.21 inches

Park Tool TW-2 Torque Wrench $44.99 Park Tool TW-2 Torque Wrench. Because torque specifications are now given for most parts and accessories, Park Tool now offers the TW-2 it's a tough, accurate 3/8 drive torque wrench.

Spin Doctor Torque Wrench Set $64.99 Spin Doctor Torque Wrench Set. Confidently install components according to manufacturers' recommended torque specifications with the Spin Doctor Torque Wrench Set. a href=/images/performance/web/PDFs/40-4160 Spin Doctor Torque Wrench_INST_V2.pdf target=_blankClick for Instruction Manual/a

Great Neck 3/8'' Drive Torque Wrench/Adaptor $14.95 Great Neck 3/8'' Drive Torque Wrench/Adaptor

Micrometer Adjustable Torque Wrench $54.99 Bikemaster Micrometer Adjustable Torque Wrench Micrometer-type sleeve allows accurate pre-set torque values to be set Reversible ratchet head Available with 3/8” or 1/2” Sq. Dr 3/8" Sq. Dr Marked range (5-80 ft lbs) 1/2" Sq. Dr Marked range (10-150 ft lbs)

Spoke Torque Wrench Set $148.99 Excel Spoke Torque Wrench Set Accurately build and maintain your wheels Allows you to increase or decrease torque on spokes Lightweight chrome, aluminum body, calibrated to + or - 2 percent accuracy 6pc. set includes chrome aluminum bodied wrench, 1 chrome plated Pro Series 6pt. spline drive head, and 4 popular Japanese and other O.E. conventional type head sizes: 6.1, 6.3, 6.5, and 6.7mm All heads are made from S45C hi-carbon steel, heat treated to an HRC 40-45 hardness Comes in a handy composite RK Excel logo box (Blue) Wrench has adjustability ranging from 5-60Lbs./inch N.m and Kg.m cross reference chart included

Raider Spoke Torque Wrench Set $54.03 Keep this handy torque wrench kit close for your fixing needs. This 7-piece kit includes a wrench and six popular head sizes. Brand: Factory SpecMaterial: Aluminum Raider Spoke Torque Wrench SetLightweight aluminum construction7-piece kit includes wrench and 6 popular head sizesAllows increase or decrease torque on spokesDimensions: 6 inches x 6 inches x 6 inches

Challenge Micrometer Torque Wrench $24.99 Internal manufacturer's 1 year guarantee. Plastic carry case included. Accessories included: 5in Extension bar. Wrench. Size H6.3, W49, D8cm. Weight 1.8kg. Ideal for tightening wheel nuts. Operating range 28 to 210Nm. By Challenge.

Flexible High Torque Wrench by Performance Tool $32.99 Breaker bar;1/2 in. drive;18 in. length;Ratcheting Flexible High Torque Wrench by Performance Tool

Porter-Cable PT382 3/8-in Impact Wrench (125 ft-lbs. torque) $59.99 3/8-in Impact Wrench (125 ft-lbs. torque) - PT382. Operating Manual

3/8 Inch Drive Inch lb Torque Wrench by Wilmar Tools for Jeep $55.99 Precision Prolock Torque Wrench;25-250 in. lb.;3/8 in. drive 3/8 Inch Drive Inch lb Torque Wrench by Wilmar Tools for Jeep

1/2 Inch Drive lb Torque Wrench by Wilmar Tools for Jeep $78.99 Precision Prolock Torque Wrench;30-250 ft. lb.;1/2 in. drive 1/2 Inch Drive lb Torque Wrench by Wilmar Tools for Jeep

Leupold Mark 4 Base Torque Wrench - 48701 $137.8 This Leupold Mark 4 Base Torque Wrench is designed to deliver the proper torque value (65-in. Lbs. ) when installing Mark 4-style rings for return-to-zero accuracy.

Proto Kit Rep Torque Wrench. 1 Kit $12.94 Manufacturer: Proto. 1 Kit. Drive Size = 1/2 in For Model = 6014, 6014M, 6014NM, 6016, 6016M, 6016NM, 6068, 6072 Material = Tool Steel Type = Repair Kit Customers also search for: Discount Kit Rep Torque Wrench, Buy Kit Rep Torque Wrench, Wholesale Kit R

Proto® - Torque Wrench Ratchet Repair Kits $15.8 Handy and convenient ratchet repair kit. Proto® - 1/2?dr Ratchet Repair Kit, Torque Wrench. Torque wrench ratchet repair kit for models 6016M, 6016NM, 6068 and 6072. Also for models 6014, 6014M, 6014NM and 6016. With 1/4" to 1" ratchet wheels manufactured from strong alloy steel for uncompromising toughness and durability. Easily manage field repairs on torque wrench ratchet heads with compatible repair kits.

K Tool International 1/2" Drive Torque Wrench. Each $81.54 Manufacturer: K Tool International. Each. 25-250 ft/lbs. Clicks when torque is achieved. Packaged in plastic molded case. Customers also search for: Discount 1/2" Drive Torque Wrench, Buy 1/2" Drive Torque Wrench, Wholesale 1/2" Drive Torque Wrench, 76962

Armstrong Tools Electronic Torque Wrench, 3/8 Drive. Each $311.26 Manufacturer: Armstrong Tools. Each. Electronic torque wrench with ease of use, strength, and productivity Customers also search for: Discount Electronic Torque Wrench, 3/8" Drive, Buy Electronic Torque Wrench, 3/8" Drive, Wholesale Electronic Torque Wren

6007Pb - Box Torque Wrench $23.64 [577-6007PB] Truck Delivery UPC: 662679533717

3/8? Gearwrench Micrometer Torque Wrench $119.95 ? Sealed tear drop design keeps out contaminants for superior performance and life and provides better access over round head designs. ? +/- 3% accuracy. ? Locking collar allows easy setting of desired torque and prevents accidental change of torque setting while in use. ? One finger operated reversing lever. ? Pliable elastometer handle grip for comfort and oil resistance. ? Includes blow molded storage case. ? 25-250 in.-lbs., 13.8? Length.By K-D Tools.

1/2? Gearwrench Micrometer Torque Wrench $119.95 ? Sealed tear drop design keeps out contaminants for superior performance and life and provides better access over round head designs. ? +/- 3% accuracy. ? Locking collar allows easy setting of desired torque and prevents accidental change of torque setting while in use. ? One finger operated reversing lever. ? Pliable elastometer handle grip for comfort and oil resistance. ? Includes blow molded storage case. ? 10-150 ft.-lbs., 21.2? Length.By K-D Tools.

3/4? Gearwrench Micrometer Torque Wrench $479.95 ? Sealed tear drop design keeps out contaminants for superior performance and life and provides better access over round head designs. ? +/- 3% accuracy. ? Locking collar allows easy setting of desired torque and prevents accidental change of torque setting while in use. ? One finger operated reversing lever. ? Pliable elastometer handle grip for comfort and oil resistance. ? Includes blow molded storage case. ? 100-600 ft.-lbs., 41.4? Length.By K-D Tools.

Blackhawk™ By Proto® 1/2" Drive Torque Wrench. Each $168.98 Manufacturer: Blackhawk™ By Proto®. Each. Desired torque value is pre-selected by use of a micrometer type scale When exact torque level is reached, wrench releases with an audible "click" Wrench resets automatically to same torque setting Ball bearing-mo

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3/8'' Drive Micrometer Torque Wrench $111.95 Fast, accurate and easy to use torque wrenches have accuracy +/-4% right hand (clockwise) and +/-6% left hand (counter clockwise). Reversible ratchet head features a 45-tooth ratchet design requiring only 8 degrees of hand travel for indexing. English and metric markings are color coded for easy reading. Ball bearing-mounted internal torque control mechanism provides proper lubrication, high accuracy, prolonged calibration life and consistent results. Positive, spring-loaded locking mechanism automatically locks in the selected reading to prevent accidental change. English Range: 25 to 250 in.-lb. (1 in.-lb. grad.) Metric Range: 3.61 to 29.03 Nm (.11 Nm grad.) Length: 13.1''By K-D Tools.

1/2'' Drive Micrometer Torque Wrench $137.95 Fast, accurate and easy to use torque wrenches have accuracy +/-4% right hand (clockwise) and +/-6% left hand (counter clockwise). Reversible ratchet head features a 45-tooth ratchet design requiring only 8 degrees of hand travel for indexing. English and metric markings are color coded for easy reading. Ball bearing-mounted internal torque control mechanism provides proper lubrication, high accuracy, prolonged calibration life and consistent results. Positive, spring-loaded locking mechanism automatically locks in the selected reading to prevent accidental change. English Range: 25 to 250 ft.-lb. (1 ft.-lb. grad.) Metric Range: 43.4 to 348.4 Nm (1.4 Nm grad.) Length: 20.5''By K-D Tools.

Nocord WWT1430 Digital Torque Control Wrench Digiwrench $70.87 The DigiWrench a Digitally Controlled 12 Volt DC DIY Impact Wrench is the only impact wrench of its kind in the world allowing you to digitally select your desired amount of torque. It has a 1/2 Drive 250 FtLbs ratio. With 4 socket sizes you don t have to worry about it being a perfect fit. The sockets themselves are specially designed to compensate for over and under tightening. The Patented Digital Torque Control with LED display will allow you to easily adjust the torque settings according to your needs. The Patented clutch system works to prevent backlash and to reduce overall power consumption. And just in case it comes with a replacement fuse. Digital Readout Digital Adjustable Torque 12 Foot Extension Cord Replacement Fuse Two DoubleSided Sockets: 17mm 19mm 21mm 23mm Max Torque: 250 FtLbs 12V DC Car Lighter Plug Adapter Blow Mold Case Patented Color: Dark Grey

K Tool International KTI72117 .25in. Drive Torque Wrench $117.2 Ratcheting style torque wrench clicks when proper torque is activated. Capacity: 30150 in./lbs. Overall length: 73/4 . Packaged in a blow molded case. Dimension: 10 L x 2 W x 1.5 H.

KD Tools KDT85074 .50in. Drive Electronic Torque Wrench $438.56 Eliminates the need for angle gauges and protractors providing the most accurate and fastest way to measure torque plus angle tightening sequences. Torque wrench will accumulate angle measurement when multiple turns must be used. Ideal for torquin

Bosch IWHT180-01 18V High Torque Impact Wrench with Friction Ring $439.99 18V High Torque Impact Wrench with Friction Ring - IWHT180-01. (2) Lithium-Ion FatPack Batteries. 30-Minute Fast Charger. Hard Case with Socket Storage

Bosch HTH181-01 18V High Torque Impact Wrench with Pin Detent $429.99 18V High Torque Impact Wrench with Pin Detent - HTH181-01. (2) Lithium-Ion FatPack Batteries. 30-Minute Fast Charger. Hard Case with Socket Storage