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The hydraulic torque wrench was invented in early 1970s. The concept of a hydraulic powered torque wrench was first introduced on the market sometime in the early 1960s in a primitive form, and several key advances have been developed by manufacturers since that time which provided major advancements
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Newer tools offer benefits such as lighter weights, smaller nose radius dimensions for fitting into tight spaces, use of exotic alloys, actuation triggers on the tool itself, multi-position reaction members, 360° × 360° hose swivels, and the ability to run multiple tools simultaneously from a single
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The main characteristics of a hydraulic torque wrench which set it apart from other powered wrenches of similar function are that (1) it must generate torque using only hydraulic means (2) it must be self ratcheting, and (3) it must include an accurate method of determining the amount of torque
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In the calibrated wrench method the wrench is calibrated or adjusted to shut off when the desired torque is reached. The hydraulic ones do not have a standard calibration procedure, but the practice follows the manual torque standards ASME B107.14-2004, ISO 6789:2003, or similar ones.
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A hydraulic torque wrench is significantly quieter, lighter weight and more accurate than pneumatic impact wrenches capable of similar torque output, making it an appealing alternative for many users to the very loud and cumbersome impact wrenches or
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Hydraulic torque wrenches typically offer accuracy of ±1-3% and have a high degree of repeatability making them well suited to applications where large bolts are involved and a high degree of accuracy is required.
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which were formerly the only viable option for working with very large nuts and bolts until the hydraulic torque wrench was introduced. The
Hydraulic Torque wrench was invented in 1968 by George A. Sturdevant.
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Some manufacturers utilize a holding pawl design to keep the wrench locked in position prior to each power stroke, while others use varying designs, which have different faults and advantages.
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is applied to the nut either directly or in conjunction with an impact socket. Hydraulic torque wrenches apply a predetermined, controlled amount of torque to a properly lubricated fastener.
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specification permitted the use of the calibrated wrench method of installation, but with a clearer statement of the requirements of the method and its limitations.
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in the technology and usability of the tools far beyond the original concept tool.
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to achieve proper tightening or loosening of a connection through the use of
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are an alternative to hydraulic torque wrenches, but not as commonly used.
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Brown, Warren; Hamilton, Scott; Nguyen, An; Smith, Tom (2011-01-01).
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Four narrow-clearance hydraulic torque wrenches on a flange.
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Vibratory hammer bolting with a hydraulic torque wrench.
49:. Unsourced material may be challenged and removed.
188:There are two types of hydraulic torque wrenches:
306:Field Calibration and Accuracy of Torque Wrenches
290:Raether, William (December 2001). "Torque talk".
16:Power tool designed to exert torque on a fastener
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133:Flange bolting with hydraulic torque wrench.
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205:Research Council on Structural Connections
109:Learn how and when to remove this message
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342:Hydraulic Torque Wrench Demonstration
329:Measurement of Torque Wrench Accuracy
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47:adding citations to reliable sources
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34:needs additional citations for
292:Engineering and Mining Journal
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298:(12). Jacksonville: 35–38.
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231:Hydraulic bolt tensioners
180:George Sturdevant in 1983
58:"Hydraulic torque wrench"
764:Machine and metalworking
695:Tongue-and-groove pliers
774:Measuring and alignment
147:hydraulic torque wrench
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811:Hand-held power tools
315:10.1115/pvp2011-57414
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739:Cutting and abrasive
43:improve this article
420:Adjustable spanner
334:2019-02-05 at the
224:torque multipliers
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153:designed to exert
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710:Upholstery hammer
262:Brown et al. 2011
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560:Monkey wrench
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203:In 1985, the
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60: –
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54:Find sources:
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32:This article
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26:
21:
20:
680:Strap wrench
655:Slide hammer
650:Sledgehammer
575:Paint roller
460:Caulking gun
430:Basin wrench
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274:Raether 2001
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264:, p. 2.
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250:Raether 2001
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190:square drive
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185:power pack.
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41:Please help
36:verification
33:
789:Woodworking
645:Screwdriver
640:Scratch awl
600:Pipe wrench
450:Breaker bar
435:Block plane
194:low profile
805:Categories
670:Staple gun
665:Spike maul
580:Paintbrush
570:Nut driver
565:Multi-tool
545:Lug wrench
525:Hole punch
495:Grease gun
386:Hand tools
309:. ASMEDC.
237:References
163:hydraulics
151:power tool
99:April 2016
69:newspapers
690:Tire iron
555:Mitre box
480:Fish tape
455:Cat's paw
407:Workbench
200:applied.
826:Wrenches
744:Forestry
734:Cleaning
705:Tweezers
515:Headlamp
397:Sawhorse
332:Archived
159:fastener
769:Masonry
759:Kitchen
620:Plunger
595:Pincers
520:Hex key
475:Crowbar
470:Crimper
445:Bradawl
402:Toolbox
347:YouTube
284:Sources
83:scholar
821:Torque
779:Mining
749:Garden
715:Wrench
605:Pliers
550:Mallet
500:Hammer
485:Gimlet
155:torque
85:
78:
71:
64:
56:
784:Power
630:Punch
465:Clamp
440:Brace
157:on a
149:is a
90:JSTOR
76:books
754:Hand
535:Jack
510:Hawk
192:and
165:. A
62:news
345:on
311:doi
296:202
45:by
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294:.
145:A
378:e
371:t
364:v
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106:(
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97:(
87:·
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39:.
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