Backlash-free shaft coupling under pretension

ROTEX® GS, a three-piece coupling with an axial plug-in that is backlash-free under pretension. It impresses even in critical applications thanks to its backlash-free torque transmission, optimum rigidity adapted to the respective application scenario, and excellent oscillation damping. Using this principle offers particularly easy-to-install and production-optimized installation options. The ROTEX® GS is designed as a modular system. Different hub designs can be combined with a single coupling size. Additionally, the ring gears are available in various Shore hardnesses.

In addition to the standard versions, Rotex® GS is also available in the following designs:

DesignFeatures
ROTEX® GS miniature couplingCompact dimensions
Torques ranging from 0.2 to 12 Nm
Clean room certified
ROTEX® GS Compact1/3 shorter than standard design
Good concentricity
ROTEX® GS clamping ring hub lightIntegrated clamping system made of aluminium
High friction fit torques
Very smooth running
ROTEX® GS steel clamping ring hubIntegrated clamping system made of steel
High friction fit torques
Very smooth running
ROTEX® GS P in accordance with DIN 69002Integrated clamping system made of steel
High friction fit torques
Developed for short drilling spindles
ROTEX® GS-P ETP®Integrated ETP quick-clamping system
Compact mounting dimensions
Exceptional concentricity
ROTEX® GS expanding hubIntegrated clamping system for hollow shaft connections
ROTEX® GS A-HDesign for radial assembly/disassembly
Held in place via four screws
ROTEX® GS DKMDouble-cardan jaw coupling
Can compensate for higher radial misalignments
ROTEX® GS ZR1Intermediate shaft coupling with clamping hub on intermediate pipe
Used with larger shaft gaps
ROTEX® GS ZR2Intermediate shaft coupling with CLAMPEX locking elements
Used with larger shaft gaps
ROTEX® GS ZR3Intermediate shaft coupling with glued aluminium pipe
Lengths up to 4 m possible
Split coupling hubs
ROTEX® GS HPNo single ring gear; consists instead of individual elastomers
Developed for high-speed drives

Highlights

  • High power density with large range of variants
  • With an axial plug-in for easy installation
  • Torques ranging from 0.2 to 5,850 Nm
  • Compact mounting dimensions – also in aluminium (for particularly low moments of inertia)
  • Friction-fit shaft-hub connection for absolutely zero backlash

Structure and function

The straight toothing of the ring gear installed under initial stress leads to lower surface pressure and thus to increased rigidity of the coupling system. The elastic teeth that compensate for misalignments have radial support in the form of a raised collar along the internal diameter. This prevents excessive inward/outward deformation during strong acceleration and when operated at high speeds. This is crucial for trouble-free functioning and long-term durability.

The alternately installed "warts" on the ring gear prevent the entire surface of the ring gear from being in contact with the hub. This ensures the coupling's ability to compensate for misalignments, contributes to a long service life, and provides electrical insulation.

In order to ensure easy installation, the cams of the hubs and plastic teeth are sloped. The ROTEX® GS is also available in an ATEX version upon request.

Features

  • Backlash-free, vibration-damping jaw coupling
  • Compensation of misalignments
  • Maintenance-free
  • Electrically insulating and fail-safe

Application area / utilisation

  • Control and positioning technology
  • Measurement and control technology

Further information

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