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Extension ladder A 20–60-foot ladder with one or more movable sections that extend beyond a base section, generally using a halyard rope and pulley mechanism for lifting and locking cams to latch the moving sections at a selected height.
Torque values available vary with size but range up to approximately 75,000 FT-LB. [ 5 ] Impact wrench – An air powered socket wrench that delivers high torque output by storing energy in a rotating mass, then delivering it suddenly to the output shaft.
For example, a torque multiplier with a rating of 3:1 will turn its output shaft with three times the torque, but at one third the speed, of the input shaft. However, due to friction and other inefficiencies in the mechanism, the output torque is slightly lower than the theoretical output.
A set of metric spanners or wrenches, open at one end and box/ring at the other. These are commonly known as “combination” spanners. A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts—or keep them from turning.
A breaker bar is able to create a larger amount of rotational force compared to a standard socket wrench. A standard breaker bar is strong enough to allow the user to apply up to 2,500 pound-feet (3,400 N⋅m) of torque without breaking the bar. [3] A high-end 1/2" socket wrench can withstand a maximum of 500 pound-feet (680 N⋅m) of torque. [4]
State. Average Monthly Rate: Minimum Coverage. Average Monthly Rate: Standard Coverage. Average Monthly Rate. Michigan. $151. $522. $481. New Jersey. $120. $390. $360
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