Overview
The B-LOC B112 2-7/16 locking assembly is a heavy-duty keyless locking bushing manufactured by Fenner Drives for reliable shaft-to-hub connections in industrial machinery and equipment. The B-LOC B112 Series 2-7/16″ Keyless Bushing provides a high capacity, zero-backlash shaft to hub connection for shafts measuring 2-7/16″ in diameter by means of a mechanical interference fit and also transmits up to a maximum of 4669 ft lbs torque. This locking assembly eliminates the need for traditional keys or pins while maintaining exceptional concentricity and load capacity.
Key Features
- Wide, double taper design enhances torque transmission and bending moment capacity while maintaining exceptional concentricity with thru-bored hubs.
- No axial movement during installation. The B-LOC B112 Series eliminates the need to hold the shaft or lock machine while applying installation torque, making for fast and easy component repositioning.
- Since the B-LOC B112 Series Keyless Bushings do not have a flange, the external diameter along the unit’s entire length is the same, therefore allowing the unit to be completely inserted into the component bore for flushed or recessed mounting.
- This series is also self-centering and RoHS compliant.
- The B-LOC B112 Series 2-7/16″ Keyless Bushings provide a zero-backlash frictional connection that will never wear or pound out and can accommodate a high torque, thrust, bending, and/or radial loads.
Technical Specifications
- Shaft Bore Diameter: 2-7/16 inches
- Outside Diameter: 3.74 inches
- Overall Length: 2.598 inches
- Maximum Transmissible Torque: 4669 ft-lbs
- Transmissible Thrust: 45,974 lbs
- Hub Contact Pressure: 18,822 psi
- Locking Screw: M8 × 55
- Material: Steel
- Locking Type: Internal annular screw
- RoHS Compliant: Yes
Typical Applications
Best suited for applications that require a recessed installation of the bushing with no axial movement of the mounted component relative to the shaft during tightening. The B-LOC B112 2-7/16 is commonly used in:
- Conveyor and power transmission systems
- Industrial machinery and equipment
- Precision medical devices
- Turbine and rotating equipment assemblies
- Pump and motor coupling applications
- High-torque shaft-to-hub mounting
Compatibility & Replacements
Compatible With
- Any shaft with 2-7/16 inch bore diameter
- Components requiring keyless hub mounting
- Thru-bored hubs and flanges
- Recessed and flush mounting installations
Replaces / Drop-In Replacement For
The B-LOC B112 2-7/16″ is the primary model for this size and bore specification. Related model variations in the B112 series include the B122208 (2-1/2″ bore) and B122215 (2-15/16″ bore). Verify specific model compatibility with your system integrator before ordering for alternative applications.
Works With
- Standard industrial shafts and hubs
- Compatible with keyway-equipped shafts (can mount over existing keyways)
- Any hexagonal wrench for M8 × 55 screw tightening
- No special tools or alignment fixtures required for installation
