When do you use torque to tighten a bolt?
The bolt is tightened until the desired P (load) is indicated by the tension indicating device. The tightening torque required to achieve the desired tension is the actual tightening torque that should be used for that given application.
Which is correct torque or foot pound force?
The formula for torque in the instance of tightening a fastener would be: Torque equals force times radius, or T=FR. When tightening a bolt, “R” would be the length of your wrench. The “foot-pound” (or more accurately, “foot-pound-force”), on the other hand, is a measurement of work.
When to use a foot pound torque wrench?
A foot-pound torque wrench will have the higher ranges needed to achieve values higher than 250 inch-pounds and will be required for service equipment over 200 amps. The torque screwdriver is used for the circuit breaker and ground/neutral bus terminations.
What is the formula for target tightening torque?
The basic formula T = K x D x P stated earlier takes these factors into account and provides users with a starting point for establishing an initial target tightening torque. Target tighten torque (the result of this formula is in inch pounds, dividing by 12 yields foot pounds
How to get 18 foot pounds of torque?
Replace the wrench and the spring balance and reapply the tightening force. Keep the balance in the plane of the wrench and perpendicular to the body of the wrench. Increase the force until the balance indicates the calculated value. Remove the balance and wrench. The bolt is now tightened to a torque of 18 foot-pounds.
A foot-pound torque wrench will have the higher ranges needed to achieve values higher than 250 inch-pounds and will be required for service equipment over 200 amps. The torque screwdriver is used for the circuit breaker and ground/neutral bus terminations.
The formula for torque in the instance of tightening a fastener would be: Torque equals force times radius, or T=FR. When tightening a bolt, “R” would be the length of your wrench. The “foot-pound” (or more accurately, “foot-pound-force”), on the other hand, is a measurement of work.
The bolt is tightened until the desired P (load) is indicated by the tension indicating device. The tightening torque required to achieve the desired tension is the actual tightening torque that should be used for that given application.