Torque multiplier
A torque multiplier is a tool utilized to supply a mechanical advantage in applying torque to turn bolts, nuts or various items projected to be actuated by application of torque, such as the actuation of valves, especially where there are relatively high torque necessities.
Torque multipliers usually employ an epicyclic gear train having one or more stages. Each stage of gearing increments the torque applied, permitting torque mulitplication ratios usually in ratios such as 5:1, 25:1 and 125:1.
In the epicyclic gear systems, torque is applied to the input gear or ‘sun’ gear. Three or four planet gears are organized around and engaged with this sun gear, and therefore rotate. The outside casing of the multiplier, is as well engaged with the planet gear teeth, but is prevented from rotating by means of a reaction arm, making the planet gears to orbit around the sun gear.
Torque Multiplier Max Output 1000 ft/lbs.
The planet gears are contained in a ‘planetary’ carrier which as well contains the output drive shaft, thence as the planet gears orbit around the sun gear, the carrier and then the output shaft rotates. Without the reaction arm to prevent rotation of the outer casing, the output shaft can’t apply torque.
A added effect of the multiplication of torque, is a diminish in rotational speed of the output shaft. This reduction in speed is approximately proportional to the increment in torque. Differences between the ratios of input and output speed, and input and output torque, is induced by any inefficiency in the gearbox.
Proto 6232 3,200 Foot Pound Torque Multiplier
Hand Torque Multiplier- Ideal for remote locations where air & power aren’t accessible