Overview
The Rexnord ZB2315 flange block bearing is a robust, heavy-duty mounted bearing unit engineered for industrial power transmission applications. Featuring a square 4-bolt flange mount and 3-15/16″ bore diameter, this unit delivers reliable performance in conveyors, fans, blowers, and general machinery requiring precision-mounted spherical roller bearings. Built with cast iron housing and relubricatable bearing technology, the ZB2315 provides long service life in demanding environments.
Key Features
- 4-bolt square flange mount—direct bolt-down installation
- 3-15/16″ (3.938″) bore diameter for standard shaft coupling
- Spherical roller bearing—self-aligning for misalignment compensation
- Cast iron housing—corrosion resistance and structural rigidity
- Relubricatable design—extend bearing life with scheduled maintenance
- Clearance seal standard—protects bearing surfaces from contamination
Technical Specifications
- Bore Diameter: 3-15/16″ (3.938″ / 100.025 mm)
- Housing Type: 4-Bolt Square Flange Block
- Bolt Circle Diameter: 10.7″
- Bolt Spacing: 7-19/32″
- Bearing Type: Spherical Roller (Double Row)
- Housing Material: Cast Iron
- Sealing: Clearance Seal Standard
- Lubrication: Relubricatable (Grease)
- Weight: 56 lbs
Typical Applications
The Rexnord ZB2315 is ideal for:
- Conveyor belt systems and roller tables
- Fan and blower motor bearing support
- Pump and compressor mounting
- Industrial gearbox input/output shafts
- Heavy machinery requiring self-aligning spherical roller bearings
Compatibility & Replacements
Compatible With
- Rexnord ZB2000 series spherical roller bearing blocks
- Standard industrial mounting flanges with 4-bolt square pattern
- Shafts with 3-15/16″ bore requirement (3.938″ diameter)
- Conveyor, fan, pump, and machinery OEM equipment
Replaces / Drop-In Replacement For
- Verify with Rexnord or your system integrator for specific model interchangeability before ordering.
Works With
- Grease-lubricated bearing maintenance protocols
- Industrial mechanical power transmission systems
- Standard 4-bolt flange mounting assemblies
- Rexnord FB (Flange Block) and ZB series ecosystems
