Torque Multiplier Mathematics

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X-4 Torque Multiplier FAQs

How does an X-4 torque multiplier work?

The X-4 Tool Torque Multiplier employs an arranged gear set to substantially multiply the torque applied at the input end of the device providing the increased output power necessary for both tightening and loosening fasteners in a wide variety of applications. X-4 torque multipliers offer a much safer and more practical alternative to using long drive extensions. Simply attach any appropriately-sized standard drive socket to the output (male) drive square of the torque multiplier. Then, insert the drive end of a ratchet, breaker bar, torque wrench or other standard drive tool into the input (female) square of the multiplier. (Please note that impact type driving tools SHOULD NOT be used with X-4 Tool torque multipliers.) Place the torque multiplier assembly on the fastener while securely restraining the reaction bar against a fixed object or surface. Any force applied to the drive tool will be multiplied at the output end of the X-4 Torque Multiplier.

Can my X-4 Torque Multiplier be used with an impact-type drive tool?

Due to the difficulty in monitoring and controlling the forces generated by impact drivers whether they are manually or power driven, it is not recommended that they be used with X-4 Tool torque multipliers. The use of impact-type drive tools may lead to breakage of multiplier components and could result in personal injury. Please note that X-4 Tool does not warrant its products from damage that occurs while used in conjunction with impact-type drive tools.

Is it necessary to calibrate X-4 torque multipliers?

There is no feature, device or scale of an X-4 torque multiplier that requires calibration. Because of losses inherent in the design of the product each individual multiplier does exhibit a reduction in operating efficiency thereby resulting in a multiplication factor that is somewhat less than theoretical when measured at the output end of the device. Users can typically expect losses of between 10 to 20% in the ratio of measured output to input torque for most models. If it becomes necessary to know exactly how much output torque is produced for a given input torque X-4 Tool can perform an efficiency data test on any individual multiplier upon request and provide documented results at an added cost.

What is the difference between a torque wrench and an X-4 torque multiplier?

A standard torque wrench is typically used in assembly operations to accurately assess how much torque is being applied to a fastener. Torque values are commonly observed by viewing a digital or mechanical scale incorporated within the tool while applying torque. Whereas the primary function of a torque wrench is to measure applied torque that of the X-4 Tool torque multiplier is to substantially lessen the amount of input torque required while still delivering higher output torque for both assembly and disassembly operations.

How do I assure that the torque at the output end of the device is within my specified range?

Depending upon the level of accuracy required one of two methods of determining output torque of an X-4 Tool torque multiplier can be employed. By using a torque wrench on the input side of the device and taking into consideration the efficiency losses for the particular multiplier being used the output torque can be calculated. In applications where higher levels of precision are required it would be necessary to attach a multiplier-driven indicator to the output (male) end of the torque multiplier. The actual torque generated could then be determined by observing the scale of the indicator. In either case, it is imperative that the maximum output capacity of the torque multiplier not be exceeded.

X-4 Torque Limiter FAQ

How long can I use my X-4 torque limiter before it requires resetting?

It is difficult to predict with any reasonable level of confidence exactly how many cycles a Perf-A-Torq Torque Limiter can withstand before it would need to be re-calibrated because of the wide range of applications in which the devices are used. Factors such as the torque limit to which the limiter is preset and what type of tool is being used to drive the device adds to the uncertainty. A general observation concerning Perf-A-Torq limiters is that variation from the original preset value is less likely to occur as the device is used and the internal components 'wear in'. If there is any doubt that a Perf-A-Torq limiter is not releasing at the torque level to which it was preset it can be re-calibrated either in the field or at our factory.

Phone: 781-933-1400

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