RIGIFLEX®-HP – steel multiple-disc coupling for difficult use cases and applications

Torsionally rigid, backlash-free high performance steel multiple-disc clutch for high-speed and demanding drives

The RIGIFLEX®-HP steel multiple-disc clutch is a high-performance coupling for extremely rapidly rotating drives and high torques. The RIGIFLEX®-HP couplings are usually balanced according to the balancing methods recommended according to API 671.

Commonly used methods for balancing are:

• Individual part balancing
• Overall balancing to check the balancing of individual parts. When doing so, note that corrections to the balancing can only be performed on the individual parts.
• Overall balancing with balancing correction for entire coupling
• Other customised balancing procedures can also be performed

For the coupling design, the axial natural frequency – critical speed – is to be checked. According to API 671, the critical speed should be +/- 10% beyond 1x and 2x the operating speed of the drive.

The RIGIFLEX®-HP is usually designed with bevel bore holes for an oil press fit. Alternatively, featherkey connections, flange connections, or mechanical locking elements / clamping sets are of course also possible.

Highlights

• Torsionally rigid and backlash-free
• Maintenance-free
• API 610 and 671
• Certification / type examination for ATEX, GOST R / GOST TR, DNV GL

The RIGIFLEX®-HP is available in different designs

Features

• Torsionally rigid, backlash-free and maintenance-free steel multiple-disc clutch
• Rated torque up to 330,000 Nm
• Shaft diameter of up to 380 Nm
• Very smooth running thanks to precise balancing
• Intermediate piece can be installed/disassembled radially
• Application-optimised torsional rigidity
• Coupling design in accordance with API671 shaft coupling for power transmission with rotational vibration damping

Application area / utilisation

• Pumps
• Turbo compressors
• Turbines