Torque Reaction Arm ( 505mm working radius) Manufacturer

Chengmao Torque Arm / Professional manufacturer for selling assembly machines and tools used on production line.


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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 46 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.
  • C type table clip.
  • Automatic Screw horizontal seat.(TR series)


C type table clip. Automatic Screw horizontal seat(TR series)



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    The Automatic screw horizontal seal is optional and can be easily installed on the Torque Reaction Arm with a hexagonal wrench for horizontal operation.In accordance with the requirements of the production line in the factory, vertical operations can be carried out. After installing the Automatic screw horizontal seal, horizontal operations can be operated, which increases the diversification of operations.Automatic Screw horizontal clamping seat TRL series applicable torsion arm support models:TR-350、TR-650

Files Download
  • Automatic Screw Feeder Catalog
    Automatic Screw Feeder Catalog

    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.