4GN120K Parallel Shaft Gearhead | Buy In Stock

4GN120K – Oriental Motor World K Series Parallel Shaft Gearhead, 120:1 Ratio, In Stock

Buy the Oriental Motor 4GN120K, a World K Series parallel shaft gearhead, 120:1 gear ratio, for use with 4IK25GN and 4RK25GN Series induction and reversible motors. In stock and available for fast shipping. Get a quote today.

Key Technical Specifications

  • Product Type: Parallel shaft gearhead, GN Series
  • Gear Ratio: 120:1
  • Compatible Motor Frame: 4IK25GN Series induction motors, 4RK25GN Series reversible motors
  • RoHS Compliance: Compliant

Design and Performance

Highest-Ratio Speed Reduction in the 4GN Family

With a 120:1 gear ratio, the 4GN120K delivers the greatest speed reduction and highest output torque within the 4GN parallel shaft gearhead range, suiting applications requiring the slowest output shaft speeds from a 4IK25GN or 4RK25GN motor.

Low-Noise Helical Gear Design

Featuring a helical cut spline on the mating shaft that engages the gearhead’s first-stage gears, this design reduces the primary source of gearhead noise, combined with a redesigned gearcase and ball bearings for quieter overall operation.

Direct Compatibility with the 4IK25GN/4RK25GN Motor Frame

Designed to mate precisely with 4IK25GN and 4RK25GN Series motors sharing the same frame size and pinion type, the 4GN120K assembles directly onto the motor’s output shaft for a compact, unified motor-gearhead unit.

Maximum Output Torque for High-Load Applications

The 120:1 gear ratio delivers the highest maximum permissible output torque in the 4GN range, supporting applications where the connected load demands significantly more torque than the motor alone can provide at its native speed.

Compatible with Both Induction and Reversible Motors

As a shared gearhead across the 4IK25GN induction motor and 4RK25GN reversible motor families, the 4GN120K offers flexibility whether the application requires continuous uni-directional operation or frequent direction reversal.

Why Buy the 4GN120K From Us

  • In stock and ready for immediate dispatch
  • Fast shipping on every order
  • Commercial advisory support to help you confirm compatibility with your 4IK25GN or 4RK25GN Series motor
  • Competitive pricing — get a quote in minutes

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