Torque Arms provide 2 main benefits:
1) They absorb the torque that is generated during tightening
2) They provide lift for the nutrunner, so that the nutrunner floats at all times on the end of the arm

The torque arm shown withstands over 400 ft-lb of Torque.

Close up of a "Trombone" for a nutrunner, which holds the nut while the bolt is tightened.

Notice the shotpin at the right, which locks the nutrunner at different angles.

When a trombone is used, there is always the possibility of "torque lock", which makes it impossible to remove the tool from the tightened fastener.  To prevent this, we provide an anti-torque-lock device that allows the nutrunner to move free of the fastener. 

Torque Tubes generally hang from crane rails and normally cannot withstand the same torque levels as torque arms.

Movement is straight up and down, balanced by a spring balancer or an air cylinder.

Amount of Torque - 200Nm or 150 Ft-Lb                                                    

*Payload = 30lbs       

Crane Mounted                             

Modular Torque Arm for smaller torques, assembled from standard components.   Lift is provided by an air cylinder. 

Amount of Torque - 70Nm or 50 Ft-Lb

Typical Reach = 3'

*Payload = 30lbs 

Amount of Torque - 200Nm or 150 Ft-Lb

*Payload = 30lbs       

Amount of Torque - 500Nm or 375 Ft-Lb

Typical Reach = 7'

*Payload = 50lbs 

         TM15       

Torque Manipulator

Amount of Torque - 500Nm or 375 Ft-Lb

*Payload = 100lbs       

Torque Manipulator 

Amount of Torque - 1000Nm or 750 Ft-Lb

Typical Reach = 12'

*Payload = 150Lbs