Torque Reaction Arm ( 505mm working radius)


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Torque Reaction Arm ( 505mm working radius) | Assembly Machines and Tools Manufacturer - Chengmao

Chengmao Tools Industrial Co., Ltd., since 1977, is a Torque Reaction Arm ( 505mm working radius) supplier based in Taiwan.

ISO-9001:2015, CE certified, award-winning and patented design assembly machines and tools including automatic screw feeder machines, automatic wheel lacing machines, spring balancers, air hose balancers, air nippers & crimpers, torque reaction arms, etc.

Chengmao has been supplying assembly machines and tools to worldwide customers, both with the advanced technology and 40 years of experience, Chengmao ensures each customer's needs are met.

Torque Reaction Arm ( 505mm working radius)


Seals TR-350 Torque Reaction Arm has a 505mm work radius from the spindle base. With 365 degree rotation, TR-350 provides big work area. Meanwhile, its bendable arm design provide less conflict with other operator.

TR-350A is for pneumatic tools only. And, TR-350AE is both for electric and pneumatic screwdriver.


Torque Arm


It is designed to avoid for injuries caused by repetitive work and overusing the arm can occur in daily work activities. We provide the opportunity to implement ergonomic improvements to the manufacturing process. This torque reaction arm removes torque twisting and weight loading to create a safe work environment.


  • 1. Maintains tool in a constant vertical position.
  • 2. Exclusive height adjustment.
  • 3. 360° swivel.


Model No.TR-350ATR-350AE
Tool InstallmentAir Connector(A Type)Clamp(AE Type)
Max. Working AreaR508R508
Vertical Stroke370 mm370 mm
Screwdriver TypePneumaticElectric / Pneumatic
Screwdriver Weight< 1 kgs< 0.8 kgs


  • Screwdriving.
  • Drilling and Tapping.
  • Automatic Screw Feeding.
  • Impact Wrenches.
  • Impact Tools.
  • Pulse Tools.



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Files Download
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    Full information of production line of automatic screw feeder from SEALS. This includes models for portable and automation application to enhance your screw assembly ability, efficiency, quality.