Overview
The Rexnord 225939-1 shaft hub is a precision-engineered coupling component designed to connect rotating shafts in industrial machinery and power transmission systems. Built to strict manufacturing tolerances, this shaft hub accommodates the specified bore diameter and provides a secure mechanical interface between motor shafts, pump shafts, and driven equipment. The hub’s robust steel construction ensures consistent performance across continuous duty cycles.
Key Features
- 2.4365-inch outer diameter for standard grid coupling and spacer coupling assemblies
- 0.625-inch shaft bore diameter for reliable shaft engagement
- Precision-machined steel construction withstands high radial and axial loads
- 0.318-inch axial length through bore for keyway and set-screw mounting
- 2.714-inch bore measurement supports secure hub positioning and alignment
- Industry-standard design for drop-in replacement and retrofit applications
Technical Specifications
- Outer Diameter (OD): 2.4365 inches
- Shaft Bore Diameter: 0.625 inches
- Hub Length Through Bore: 0.318 inches
- Bore Measurement: 2.714 inches
- Material: Steel
- Part Number: 225939-1
- Cross-Reference: 200816-5511
- Mounting Method: Keyway with set screw(s)
Typical Applications
- Grid couplings and elastomeric coupling assemblies
- Motor-to-pump direct-drive connections
- Gearbox input and output shaft couplings
- Industrial machinery and production equipment
- Power transmission in manufacturing facilities
- HVAC and fluid handling systems
Compatibility & Replacements
Compatible With
- Rexnord / Falk grid couplings and spacer coupling systems
- Elastomeric coupling elements compatible with standard hub bore
- Motor and pump shafts with 0.625-inch diameter
- Industrial equipment requiring precision shaft hubs
Replaces / Drop-In Replacement For
- Rexnord 200816-5511 (cross-reference)
- Verify compatibility with your system integrator or equipment OEM documentation before ordering to ensure proper fit and performance.
Works With
- Rexnord Steelflex and Wrapflex coupling systems
- Standard keyway and set-screw fastening hardware
- Heat-shrink and interference-fit mounting methods
- Shaft alignment and coupling installation tools
