API gearbox design with fixed center distances and pre-engineered standard to meet the highest requirements.

Our innovative turbo gearboxes have been the source of continual gains in efficiency in the energy production and process technology fields for years now. The TAI range was designed especially for the special engineering requirements of the oil and gas industry. It is a standardized, single-stage gearbox concept for high-speed applications. This gear unit type is available in six housing sizes with fixed center distances.

Innovations from RENK have nearly halved power losses in turbo gearboxes over the past 20 years and have played a key role in helping our customers to significantly boost the efficiency of their systems.

The main feature of these RENK turbo gearboxes are the case-hardened, precisely machined flanks of the teeth, which are designed for API, AGMA, DIN, and ISO requirements according to the respective application. Every design is based on detailed rotordynamic calculations for all operating points. The geometries of our radial and axial bearings are therefore precisely optimized according to the respective application scenario as well as the operating conditions.


  • Suitable for absorbing axial forces

  • Short shaft overhangs for the best rotordynamic vibration characteristics

  • Welded construction – adaptable to specifications / customer requests

  • Best possible efficiency that can be achieved by conventional means

  • Optimized gear tooth geometry in terms of efficiency, noise, and vibration excitation

  • Individually calculated, optimal bearing geometries for every application scenario

  • Short delivery time due to high availability of stock

  • Oil drainage can be varied as selected

  • Instruments on lower section only

Technical Data

  • Power: up to 20 MW

  • High speed shaft: < 15 000 rpm

  • Transmissions: 4 - 9.5

  • Available as: TA50I; TA56I; TA63I; TA71I; TA80I; TA90I

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: TA..I