Overview
The Ruland MCLC-20-20-F is a one-piece rigid coupling featuring 20mm x 20mm bore diameters and 6mm x 6mm keyways. This precision-engineered component is engineered for shaft-to-shaft connections where tight alignment and low runout are critical. The coupling maintains collinear bore alignment to minimize vibration and misalignment, making it ideal for high-precision servo applications and demanding industrial machinery.
Key Features
- Precision Honed Bores — Collinear bore alignment ensures no introduction of misalignment or vibration into the system
- One-Piece Clamp Style with Keyway — Integrated 6mm x 6mm keyways on both ends for secure shaft engagement
- Nypatch® Anti-Vibration Coating — Proprietary coating prevents galling and maintains high holding power through repeated installations
- Black Oxide 1215 Lead-Free Steel — Proprietary finish provides corrosion resistance and superior fit with fine glossy appearance
- DIN 912 12.9 Forged Screws — Exceeds standards for maximum holding power and reliability
- RoHS3 and REACH Compliant — Meets environmental and regulatory requirements
Technical Specifications
- Bore Diameter (Both Ends): 20mm
- Keyway Size: 6mm x 6mm (both ends)
- Outside Diameter: 42mm
- Length: 65mm
- Material: 1215 Lead-Free Steel, Black Oxide Finish
- Clamp Style: One-Piece with Keyway
- Bore Tolerance: +0.050mm / +0.012mm
- Recommended Seating Torque: 16 Nm (5.0mm hex wrench)
- Screw Material: Forged Alloy Steel (DIN 912 12.9)
- Finish: Black Oxide with Nypatch® Coating
- Compliance: RoHS3 and REACH
- Country of Origin: USA (Marlborough, MA)
Typical Applications
The MCLC-20-20-F is suited for servo motor couplings, precision machinery alignment, pump and motor shaft connections, and any application requiring minimal backlash and runout. It is commonly used in:
- High-precision servo systems and automation equipment
- Shaft-to-shaft couplings in machine tools and CNC equipment
- Encoder or tachometer mounting on drive shafts
- Gearbox input/output shaft connections
- Pump and motor coupling assemblies
Compatibility & Replacements
Compatible With
- 20mm diameter shafts with 6mm keyways
- Servo motors and stepper motors with 20mm output shafts
- Precision machinery requiring rigid shaft couplings
- Ruland mounting hardware and coupling accessories
Replaces / Drop-In Replacement For
- Other Ruland 20mm x 20mm rigid couplings in non-keyway variants (MCLX-20-20-F, MSPX-20-20-F)
- Verify compatibility with your system integrator before ordering for custom applications
Works With
- Standard M6 fastening hardware and torque wrenches
- 5.0mm hex wrench for installation and removal
- Any industrial automation, CNC, or servo control system requiring shaft coupling
- Compatible with industrial machinery and precision equipment across multiple OEMs
