What is the torque of a pneumatic wrench?
2 Answers
Pneumatic wrench torque ranges between 500~800N.M. Here are the relevant introductions: 1. Introduction to pneumatic torque wrenches: A pneumatic torque wrench is a torque wrench that uses a high-pressure air pump as the power source. It is driven by one or two powerful pneumatic motors to drive a torque multiplier with three or more planetary gears. 2. Classification of pneumatic wrenches: Pneumatic wrenches are generally divided into two categories, one is conventional, which is a very ordinary impact wrench, and the other is a pulse pneumatic wrench. The difference between the two is that the former cannot set torque, while the latter can. Pneumatic torque wrenches belong to the latter.
I've been using pneumatic wrenches for over a decade in auto repair, and torque values truly depend on the model and application. Small wrenches deliver 200-500 ft-lbs, perfect for standard car wheel lug nuts; medium wrenches (500-800 ft-lbs) handle truck bolts well; industrial-grade wrenches exceed 1000 ft-lbs for heavy equipment. Air pressure is critical—I typically set it to 90 psi. Too low reduces torque, while excessive pressure risks tool failure. Ingersoll Rand wrenches maintain stable torque around 800 ft-lbs, but always match bolt specifications—over-torquing causes thread stripping. Beginners should start with lower settings, perform regular cleaning/maintenance to prevent carbon buildup affecting performance, and prioritize safety over haste.
