Heavy-duty shaft coupling ROBA®-DS

torsionally rigidbacklash-free

ROBA® -DS couplings connect shafts. They transmit torques in a torsionally rigid and backlash-free manner. On the ROBA®-DS with conical connection, the disk pack is connected via positive locking with the hubs, the flanges or the sleeves. Externally conical bolts are pulled into conical bores in the attachment parts and the collar bushings of the disk packs by tensioning screws. The conical shape produces forces which widen the collar bushings and the attachment parts radially elastically, thus guaranteeing a backlash-free connection of the disk pack. For this backlash-free, positive locking connection, far lower screw tightening torques are required in comparison to standard frictionally locking connections. This makes installation substantially easier. The disk packs and the sleeves can be installed and de-installed radially without having to move the respective aggregates. Product features Application ✓ Suitable for heavy duty applications ✓ Use with alternating load possible without restriction Design ✓ Torsionally stiff ✓ Flexible modular system ✓ Available in stainless steel version Benefits ✓ Compensation of axial, radial and angular shaft misalignment ✓ Backlash-free ✓ Low mass moment of inertia ✓ Full nominal torque utilisation, even with changing torques and shaft misalignments Can be installed / de-installed radially ✓ Low screw tightening torques ✓ No hydraulic installation tools required; can be installed with a torque wrench Assembly and maintenance ✓ Maintenance-free ✓ Wear-free