How much torque does it take to remove a bolt?

The bigger the bolt, the more torque you need to break it free. Typical homeowner quality 1/2 inch air wrench’s have about 250 -300 FT/LBS of torque. That is probably not enough for removing spring shackle bolts, especially if they are in rubber bushings.

What is torque on a nut?

When you tighten a bolt in a bolted joint, you use a twisting force, called torque. The result is a compression, or clamp force, which pulls the bolt head and the nut towards each other, clamping the joint together.

How is force measured when tightening bolts using a torque wrench?

Torque is a twisting force measuring force multiplied by distance. It is the application of force acting at a radial distance to create tension in threaded fasteners. When the nut and bolt are tightened, the thread converts the applied torque into tension, which is converted into a clamping force.

How is the force of a torque wrench measured?

The force is measured in pounds or ounces, and the distance in feet or inches. So 10 pounds of force exerted at the end of a three-foot breaker bar would yield 30 pound-feet – or “foot pounds,” depending on the wrench scale you’re reading — of torque at the socket.

How do you loosen torque?

Simply take a bolt or screw that is tightened and start to loosen it progressively. Be keen and record the exact torque reading when the fastener becomes loose. The torque value necessary to loosen the fastener will be the approximate force that was exerted to the joint.

Can torque wrench loosen bolts?

A torque wrench is a tightening tool. It is a very sensitive and precise tightening tool, and should never been used to loosen bolts.

How is nut torque measured?

Mark the tightened fastener and surrounding application. In the tightening direction, begin to slowly apply force to the tool until the first movement in the fastener is noted. The reading recorded is a good indication of the original torque applied to the joint. This is the best way to determine residual torque.

How is torque setting measured?

How is release torque calculated?

To conduct this test, take a screw or bolt that is tightened down and begin to loosen it. When the fastener breaks loose, record the torque reading. The torque value to loosen the fastener is the approximate torque that was applied to the joint.