Planetary gearboxes have been an important part of RENK’s product portfolio for many decades. RENK’s planetary gearboxes transmit outputs of more than 20 MW and torques of more than 4.5 million Nm.

Due to their optimized designs combined with high manufacturing quality, they prove particularly effective during long-term operation and thereby ensure the availability of the system over extended periods of time. RENK very successfully employs three-dimensional, corrected straight/high toothing in the CPG. The sun pinions and planetary carriers are case-hardened and ground, the ring gear is highly tempered, optionally hardened, and precision ground.

Both connection couplings of the CPG are also integrated into the system. The gearbox is flange-mounted directly onto the engine/generator.

The uncomplicated construction of the CPG, its high manufacturing quality, and good efficiency ensure low life cycle costs.


  • Most cost-effective gearbox solution

  • Extremely low space requirements

  • Extremely lightweight

  • Integrated couplings and coupling guards

  • No internal axial forces caused by the system

  • Compensation of thermal external axial forces

  • Co-axial shaft arrangement (no center distance)

  • High degree of efficiency

  • No base required for gearbox

Technical Data

  • Power: 2 – 35 MW

  • Low speed shaft: < 3 600 rpm

  • High speed shaft: < 20 000 rpm

  • Ratio: 3 – 11

  • Efficiency: 99,00%

We can provide original German RENK gearboxes, couplings, sliding bearings, RENK bearings, oil seals, oil rings, and other accessories, so no matter what brand of motor the customer uses (including but not limited to: TECO Motor , ABB motors, Siemens motors, WEG motors, Marathon motors), as long as they are equipped with RENK products, we can provide related RENK product services.
  • Brand: RENK
  • Type: CPG