Overview
The Fafnir RAK 2 7/16 is a cast iron pillow block bearing unit designed for industrial applications requiring reliable shaft support and easy installation. It features a 2.4375″ shaft size, 2.6875″ base-to-center dimension, cast iron housing, 2-bolt pillow block, contact seals, and eccentric collar, recommended for industrial applications where normal loads are encountered. The units are prelubricated and ready for immediate installation, with a grease fitting for relubrication if required.
Key Features
- Compact, one-piece housing that can be mounted in any position
- Self-aligning at mounting with the spherical bearing O.D. fitting into a corresponding spherical housing seat
- Bearing locks to the shaft with an eccentric (asymmetric) self-locking collar secured with a setscrew
- Stainless steel grease fitting for lubricating the bearing unit
- Prelubricated and ready for immediate installation
Technical Specifications
The RAK 2 7/16 meets industrial bearing standards with the following verified specifications:
Typical Applications
RAK series cast iron pillow block bearing units are used in industrial field applications where excessive moisture and contaminants are common, such as agriculture, fisheries, mining, and logging, among many other industries. These units excel in equipment where compact housing and easy shaft mounting are critical.
Compatibility & Replacements
Compatible With
- Standard industrial shaft mounting applications up to 2-7/16″ bore diameter
- Two-bolt base mounting configurations
- Systems requiring self-aligning bearing support
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Fafnir RAK pillow blocks in this series may have equivalent Timken part numbers (Timken owns Fafnir). Contact manufacturer for confirmed cross-references.
Works With
- Standard industrial lubricants and greases
- Two-bolt flange mounting systems
- Relubrication maintenance schedules via stainless steel grease fitting


















