Cycloidal Speed Reducers

Cycloidal (planocentric) Gearboxes employ eccentric motion to achieve its speed reduction. It uses noncircular or eccentric motion to convert input rotation into a wobbly cycloidal motion. This motion is then converted back into a circular output rotation. During this process, speed reduction occurs. Unlike Harmonic drives, which employ a flexible cylinder that doesn’t move in its entirety but stretches to mesh with the internal circular spline gear to achieve a type of cycloidal motion, the cycloidal (planocentric) drives will actually move the entire internal gear in an eccentric motion.

cycloidal speed reducer

CIRCULUTE 3000® Cycloidal Speed Reducer

Output torque range from 377 in. lbs. (42 Nm) to 65,000 in. lbs. (7,340 Nm)

The Circulute 3000 Reducer is Shimpo’s next generation cycloidal speed reducer.  It utilizes 52100 grade bearing steel on all of its speed reduction components.  It is offered with a full two year warranty, not limited by hours of operation, and is able to endure abuse that would break the teeth of ordinary speed reducers.  The Circulute 3000, readily available with inputs for both servo and induction motors, features a compact design with single reduction ratios of 11:1 to 71:1 at 95% operating efficiency. Offered in two backlash ratings and multiple mounting options, the Circulute 3000 has design tough enough for both servo and standard induction motor applications.  The unique two piece pin housing design guarantees output shaft backlash ratings of less than 6 arc-min.

Applications suited for the Circulute 3000 Reducer include machine tools, rotary valves, feeders, rotary tables, steel industry roll drives, mixers, grinders, dryers, and conveyors.

Optional top mount, shovel base input, IEC motor inputs, designs for overhead conveyor applications, and a wide range of options for unique applications.

cycloidal speed reducers chart

Cycloidal Speed Reducer Features:

  • 35 basic sizes, available as single, double and triple reduction units
  • Input power range from 1/8 HP (.1 kW) to 60 HP (45 kW)
  • Ratio range from 11:1 to 357,911:1
  • Output torque range from 377 in. lbs. (42 Nm) to 65,000 in. lbs. (7,340 Nm)

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