Overview
The Ruland Zero-Max CD Coupling Model 6-22 is a composite disc coupling designed to handle precision applications requiring smooth, backlash-free power transmission. This double-flex design provides superior misalignment capacity while maintaining high torsional stiffness, making it ideal for motors, pumps, compressors, and other machinery where shaft alignment cannot be guaranteed. The composite disc construction absorbs vibration and reduces noise while protecting connected equipment from sudden shock loads.
Key Features
- Double-flex composite disc design for superior misalignment capacity
- High torsional stiffness ensures minimal backlash and precise motion control
- Clamp hub connection eliminates keyways and setup time
- Accommodates angular, radial, and axial shaft misalignment
- Compact footprint suitable for space-constrained installations
- Vibration damping reduces system noise and extends equipment life
Technical Specifications
Specifications for the Model 6-22 coupling with standard clamp hubs:
- Continuous Rated Torque: 270 in-lbs (30 Nm)
- Angular Misalignment Capacity: 2 degrees
- Axial Misalignment: 0.071 inches (1.8 mm)
- Clamp Bolt Size: M6
- Distance Between Shaft Ends (C): 0.91 inches (23 mm)
- Coupling Type: Double-Flex Composite Disc
- Hub Style: Clamp (keyless)
Typical Applications
The Ruland Zero-Max CD Coupling Model 6-22 is well-suited for:
- Industrial motor-driven machinery and equipment
- Precision automation and servo applications
- HVAC and fluid handling systems
- Light to medium torque power transmission
- Applications requiring vibration isolation and shock absorption
- Equipment with space constraints requiring compact couplings
Compatibility & Replacements
Compatible With
- Standard industrial electric motors with shaft bore sizes up to coupling specification
- Servo and precision machinery requiring backlash-free coupling
- Pump and compressor drive systems
- Automation equipment and control systems
Replaces / Drop-In Replacement For
The Model 6-22 is part of Zero-Max’s 6-series line of CD couplings. Related models with different flex designs and specifications include 6A22 (single-flex aluminum) and 6P22 (double-flex aluminum servo versions). Verify compatibility with your system integrator before ordering.
Works With
- Clamp-style hubs (keyless coupling installation)
- Standard shaft mounting without keyways
- Industrial control systems and variable frequency drives
- Precision positioning and motion control applications




