Overview
The Ruland SP-63-F is a precision two-piece split shaft collar manufactured from black oxide 1215 lead-free steel. This shaft collar features a 3 15/16″ (3.9375″) bore and is engineered for secure, no-mar clamping on shafts up to that diameter. The two-piece design allows for easy installation and repositioning without removing adjacent components, making it ideal for retrofits and maintenance operations.
Key Features
- Two-piece split design allows installation anywhere on shaft without component removal
- Clamp-style mechanism does not mar or damage the shaft surface
- Indefinitely adjustable for precise positioning and repositioning
- Face-to-bore perpendicularity (TIR ≤ .002″) ensures critical load-bearing accuracy
- Matched halves throughout manufacturing for superior fit and alignment
- Black oxide finish provides corrosion resistance in industrial environments
Technical Specifications
- Bore Diameter: 3 15/16″ (3.9375″)
- Outer Diameter: 5 1/4″
- Collar Width: 0.875″
- Material: Black Oxide 1215 Lead-Free Steel
- Design: Two-Piece Clamp Style
- Hex Wrench Size: 5/16″
- Recommended Seating Torque: 570 lb-in
- Installation Gap: 0.125″
- Face-to-Bore Perpendicularity: TIR ≤ .002″
- Manufactured: Marlborough, Massachusetts, USA
Typical Applications
- Shaft positioning and component alignment in mechanical power transmission systems
- Load-bearing faces in industrial machinery where tight perpendicularity is critical
- Mechanical stops and spacing collars in gearbox assemblies
- Bearing and gear mounting shoulders on industrial shafts
- Equipment retrofits and maintenance applications where shaft disruption must be avoided
Compatibility & Replacements
Compatible With
- Shafts 3 15/16″ in diameter (both hardened and soft steel shafts)
- Industrial and agricultural machinery requiring precision shaft clamping
- Applications using gears, bearings, pulleys, or sprockets mounted on shafts
- Machinery in steel mills, manufacturing plants, and heavy equipment operations
Replaces / Drop-In Replacement For
- Other Ruland SP series standard two-piece shaft collars with equivalent bore size (SP-63-SS, SP-63-ST variants also available)
- Verify compatibility with your system integrator before ordering for critical applications.
Works With
- Standard hex wrench tools (5/16″ required)
- Torque wrenches calibrated to 570 lb-in for proper installation
- General-purpose industrial lubricants for shaft preparation
