Number 1 Light Cranes
Manufacturer in Canada

Number 1 Manipulator
Manufacturer in Canada

Givens Lifting Systems Located in the US? Visit our US branch.

Givens Engineering Inc, London, ON
519-453-9008 | 519-453-0666

Torque Arms

For custom-made and highly engineered torque arms and tool holders, trust Givens Engineering to design and manufacture the torque handling solution to suit your unique needs. Whatever the height, weight or torque required, there are virtually no limitations in terms of the customization we can incorporate into our specially designed torque arms.
TA10 Torque Arm with Complex Toolholder
TA10 Torque Arm with Complex Toolholder

Torque Arms For Any Application

Torque Arms have 2 roles: 
  1. They are made to absorb the torque that is generated during the process of tightening 
  2. Torque arms provide the necessary lift so that the nutrunner floats at all times on the end of the torque arm, following naturally horizontally and vertically.
At Givens Engineering, all our torque arms are specially manufactured to float on air and are exceptionally easy to maneuver. In general, the arm itself is mass-produced and stocked. The toolholder however, is custom-made for the specific application at hand. The toolholder can be very simple or can be more complex and include brakes or other unique functionalities.
Tilting Toolholder with Brakes by Givens Engineering Inc.
Tilting Toolholder with Brakes
TA5 torque arm with Repositionable Nutrunner
TA5 torque arm with Repositionable Nutrunner
A TA2 torque arm mounted overhead. Toolholder mounts the nutrunner allowing a 360-degree spin.
A TA2 torque arm mounted overhead. Toolholder mounts the nutrunner allowing a 360-degree spin.
TA5 torque arm with complex, braked toolholder. Nutrunner can rock left and right from vertical to access screws on a slant.
TA5 torque arm with complex, braked toolholder. Nutrunner can rock left and right from vertical to access screws on a slant.
Torque arm mounted on a mobile base by Givens Engineering Inc.
Torque arm mounted on a mobile base by Givens Engineering Inc.
TA2 torque arm with nutrunner mounted in a toolholder that allows a partial rotation.
TA2 with nutrunner mounted in a toolholder that allows a partial rotation.

Torque Arms with Muscle!

In the photos right and below, the nutrunner, created by Givens Engineering, consists of a servomotor and gear reducer that are controlled by PLC and monitored through an HMI. The torque arm rises to a height of 4m on a pneumatic slide and applies a torque of 160Nm (120 ft-lb). The number of rotations and the torque are continuously monitored and logged.
Servomotor Nutrunner by Givens Engineering Inc.
Servomotor Nutrunner
TA5 torque arm with servomotor nutrunner mounted in a complex toolholder that pivots from horizontal to vertical.
TA5 with servomotor nutrunner mounted in a complex toolholder that pivots from horizontal to vertical.
torque arm servo controls by Givens Engineering Inc.
Servo controls
Trombone toolholder close-up, incorporates rotation by Givens Engineering Inc.
Trombone close-up, incorporates rotation
TA10 torque arm with “trombone” toolholder by Givens Engineering Inc.
TA10 torque arm with “trombone” toolholder
Trombone converges on both nut and bolt to fasten simultaneously.
TA10 torque arm with braked, tilting, rotating toolholder
TA10 with braked, tilting, rotating toolholder
1000Nm (750 ft-lb) of torque! Applied to large fasteners in a military vehicle. When you need really serious torque, we can provide a serious arm.

Torque Arms Features

  • Torque arms are made to assist the operator in supporting the weight of the end effector/tooling
  • The use of torque arms allows a workload to 'float', therefore there are no up/down pushbuttons required
  • Torque arms are lightweight and agile. The axis assemblies are made of anodized aluminium
  • Softstops at the first and second axis are adjustable
  • Torque arms are clamped to the post, the height can be adjusted

Optional Torque Arm Accessories

  • Torque Brakes are available for the first and second axis, to eliminate drift
  • Bearing block assemblies are available at the end of the second arm allowing the end effector to rotate 
  • The parallel arms can be fitted with vertical travel stops 
  • The STD-TA series can be fitted with encoders to track the position of the tool so that individual torque values can be programmed for every fastener
  • Torque Tubes can be used instead of torque arms - when it is necessary to hang a nutrunner from a crane 
There are many torque arm models to choose from based on required torque, arm size, payload and typical reach. The chart below demonstrates the differences between the main torque arm models and their unique capacities. 

Torque Arm Model Selection

Arm SizeTA1TA2TA5TA10TA20
Torque75ft-lb 100N-m150ft-lb 200N-m370ft-lb 500N-m750ft-lb 1000N-m1500ft-lb 2000N-m
Approximate Pay Load*10lb
5kg
30lb 15kg50lb 25kg100lb 45kg150lb 70kg
Typical Reach4ft
1.2m
5ft 1.5m7ft 2.0m8ft 2.5m10ft 3.0m
* Pay Load = weight of nut runner + weight of tool holder
Total capacity is always a combination of torque and payload; always consult a Professional Engineer before designing a torque arm.
TA2 torque arm mounted on a mobile base with extra linkages for holding 3rd Axis attitude
TA2 mounted on a mobile base with extra linkages for holding 3rd Axis attitude
Torque Arm diagram by Givens Engineering Inc.

Approximate shape for TA1, TA2,TA3. TA10 and TA20 are slightly different. Arm 1 and Arm 2 are normally stocked in lengths that vary in 10” increments.
For more information regarding Givens Engineering, download our informative brochure below and contact our team of professionals to discuss your unique needs.
DOWNLOAD OUR TORQUE ARMS BROCHURE
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