72:, torque is applied to the input gear or ‘sun’ gear. A number of planet gears are arranged around and engaged with this sun gear, and therefore rotate. The outside casing of the multiplier is also engaged with the planet gear teeth, but is prevented from rotating by means of a reaction arm, causing the planet gears to orbit around the sun gear. The planet gears are held in a ‘planet carrier' which also holds the output drive shaft. As the planet gears orbit around the sun gear, the carrier and the output shaft rotate together. Without the reaction arm to prevent rotation of the outer casing, the output shaft cannot apply torque.
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61:". Extended handles use leverage instead of gear reduction to achieve torque. This torque is transmitted through the driving tool and could become dangerous in the case of a sudden catastrophic failure of the drive tool with the extended handle attached. Torque multipliers only have a fraction of the final torque pressure on the drive tool making them a safer choice.
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is unavailable due to remote locations without power, or where cost considerations require manually operated tools which do not require any power supply or power source of any kind. There are many instances where screws, bolts and other fasteners are secured so tightly that using a typical lug wrench
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A torque multiplier is generally used when there are space limitations that disallow the use of long handles. They are also used as a safer alternative to a cheater bar as lever length and operator effort are both reduced. Finally, torque multipliers allow for more accurate torque. By reducing the
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Along with the multiplication of torque, there is a decrease in rotational speed of the output shaft compared to the input shaft. This decrease in speed is inversely proportional to the increase in torque. For example, a torque multiplier with a rating of 3:1 will turn its output shaft with three
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Epicyclic gearing can be used in a torque multiplier. The sun gear (yellow) is driven by an input torque. The planet gear carrier (green) provides the output torque, while the ring gear (red) is fixed. Note the red marks both before and after the input drive (yellow) is rotated 170°
105:, product assembly, construction projects, heavy equipment maintenance and other instances where high torque output is needed. A torque multiplier allows the user to generate high torque output without the use of an air compressor or impact gun.
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amount of effort needed to tighten, a torque multiplier allows for slow and smooth application, ensuring more accurate torque levels, and preventing damage to sensitive components.
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or other items designed to be actuated by application of torque, particularly where there are relatively high torque requirements.
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and other inefficiencies in the mechanism, the output torque is slightly lower than the theoretical output.
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133:] of Norbar Torque Tools, and a popular product in the range is the Norbar Torque Multiplier."
146:", Maxpro Corp, 16 Dec 2015. "How does it work? Benefits and common uses for torque multipliers."
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gear train having one or more stages. Each stage of gearing multiplies the torque applied. In
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times the torque, but at one third the speed, of the input shaft. However, due to
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Torque multipliers are often used instead of extended handles, often called "
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129:", Worlifts, 8 March 2017. "Worlifts is a proud distributer [
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101:is not sufficient to loosen them. These include
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64:Torque multipliers typically employ an
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144:What is a torque multiplier?
127:How torque multipliers work?
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542:Mechanisms (engineering)
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495:Measuring and alignment
157:Handtorque™ multipliers
70:epicyclic gear systems
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35:mechanical advantage
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431:Wood router
271:Die grinder
241:Belt sander
197:Power tools
99:cheater bar
53:Description
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396:Scroll saw
376:Rotary saw
326:Multi-tool
311:Jackhammer
226:Air hammer
113:References
21:clockwise.
421:Table saw
416:Steam box
391:Screw gun
366:Rivet gun
246:Blowtorch
213:Workbench
155:Norbar, "
66:epicyclic
532:Wrenches
465:Forestry
455:Cleaning
331:Nail gun
296:Heat gun
286:Glue gun
208:Sawhorse
159:" (PDF).
92:powered
78:friction
41:to turn
490:Masonry
480:Kitchen
341:Nibbler
321:Jointer
261:Crusher
236:Bandsaw
97:with a
500:Mining
470:Garden
386:Sander
316:Jigsaw
39:torque
537:Gears
505:Power
401:Shear
276:Drill
43:bolts
29:is a
475:Hand
47:nuts
31:tool
131:sic
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25:A
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175:v
142:"
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