ROTEX GS HP coupling by KTR
KTR has developed a new shaft coupling for high-speed drives. The zero-backlash and flexible ROTEX® GS HP achieves peripheral speeds up to 175 meters per second.
The main fields of application are
- Machine tools
- Measurement and test bench technology
Couplings with an open shape quickly reach their limits with high-speed drives as the centrifugal forces heavily deform coupling hubs and spider. The recently developed ROTEX® GS HP has a circular and closed design so the radial deformation of the hub geometry is reduced. There is no spider involved instead the individual elastomers are embedded between the cams. They are kept in their position and shape by the closed design of the coupling, even with peripheral speeds up to 175 meters per second. The large number of elastomer segments transmitting the torque reduces the surface pressure on every single elastomer. This allows for transmitting high torques with a small outside diameter of the coupling. As an example, size 38 has an outside diameter of 80 mm transmitting torques up to 400 Nm with a speed of 40,000 RPM. This zero-backlash high speed coupling has very compact dimensions as a result allows the driving and driven shafts to be pushed together to only a few millimeters. This allows the design engineer to keep the mounting space short. With the connection of the coupling hubs on the shafts, KTR relies on the proven frictionally engaged clamping ring hubs.
The new ROTEX® GS HP is currently available in three sizes with additional sizes being released in early 2018.