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Fire Hydrant Bracket Welding

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This project installed 6 units QJRH4-1A welding robot, realized automatic welding for fire hydrant bracket. Each QJRH4-1A robot working on two fixtures, reducing workers from 12 to 6 which saved labor cost. When the robot is welding on the first working piece, the worker can unload the second working piece and replace it with a new workpiece. Reducing cycle time from 7 minutes to 4 minutes improved productivity.

1. Robot Model: QJRH4-1A
2. Robot specifications: 6-axis, repeat positioning accuracy ±0.03mm, 4kg payload, arm length 1410.5mm.
3. Welding Process: CO2 shielded arc welding
4. Workpiece: Carbon steel
5. Production line introduction:
5. Applicable industry: Construction machinery, auto, and motorcycle accessories, fitness equipment, etc.



It's 4kg payload and 1410.5mm reaching distance with compact structure.


Large workspace, fast running speed, and high repeated positioning accuracy.


Hollow structure arm and wrist, built-in welding cable, able to operate the welding process in narrow space.


Currently, it's with Tamagawa motor, Tsino Dynatron drive, and Shimpo harmonic reducer. The configuration is way much better than most of the other Chinese welding robots.

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