Overview
The Timken Fafnir RCR1 is a cylindrical ball bearing cartridge engineered for light-duty applications requiring quiet, reliable operation. This insert bearing features a one-piece synthetic rubber housing with an eccentric locking collar, designed to accommodate straight shafts without requiring shoulders, locknuts, or adapters. Widely used in HVAC equipment, domestic heating and cooling systems, conveyor drives, and other low-speed applications, the RCR1 delivers proven durability with minimal maintenance.
Key Features
- Eccentric Locking Collar: Provides secure shaft positioning without additional fasteners
- Non-Relubricatable Design: One-piece cartridge with initial supply of long-life grease; sealed for life
- Synthetic Rubber Housing: High-grade, durable, molded synthetic conductive rubber for quiet operation
- Contact Seals: Protects bearing surfaces from contamination and moisture ingress
- Grade-10 Precision Balls: Super-finished ball paths reduce noise and support proper lubrication film
- Drop-in Replacement: Fits standard cartridge bearing bores without modification
Technical Specifications
The RCR1 is optimized for low-speed, light-duty service in confined spaces and equipment with tight tolerances.
Typical Applications
- Domestic heating and air conditioning (HVAC) systems
- Ventilation and fan equipment
- Post office and package conveyor systems
- Light industrial machinery requiring low noise and compact installation
- Electric resistance welded mechanical tubing applications
Compatibility & Replacements
Compatible With
- Standard cylindrical cartridge bearing blocks and housings
- Straight shafts with standard tolerances
- Systems designed for eccentric collar locking mechanisms
- Electric resistance welded mechanical tubing (0.134″ gauge, 3.5″ OD)
Replaces / Drop-In Replacement For
- Standard RCR series bearing cartridges
- Light-duty cylindrical bearing cartridges with 1-inch bore and 2.25-inch OD
- HVAC and conveyor bearing inserts requiring sealed, non-relubricatable cartridges
Works With
- Timken Fafnir eccentric and concentric locking collar systems
- Standard bearing housings and pillow block cartridge mounting blocks
- Bearing installation tools and shaft alignment equipment












