Overview
The Lovejoy L-075 jaw coupling hub is a half-flexible coupling unit engineered for reliable shaft-to-shaft power transmission in industrial machinery. This standard L-type coupling offers shaft-to-shaft connection for general industrial-duty applications and accommodates angular and parallel shaft misalignment. The hub is designed as one half of a complete coupling assembly that requires two hubs and an elastomeric spider insert for full operation.
Key Features
- Accommodates angular and parallel shaft misalignment
- Fail-safe design—will still perform if elastomeric “spider” fails
- No metal-to-metal contact between hubs
- Resistant to oil, dirt, sand, moisture, and grease
- No lubrication required
- Standard L-type hub material is sintered iron
Technical Specifications
Specifications vary by bore diameter. The following represent common L-075 configurations:
- Coupling Size Code: L075
- Hub Material: Sintered iron
- Jaw Type: Straight
- Bore Type: Finished with keyway and stainless steel
- Keyway Dimensions: 3/16 x 3/32 inch
- Set Screw Type: Set screw
- Series: L
- Available Bore Diameters: 0.5 inch, 5/8 inch, 3/4 inch, 7/8 inch, and larger
L-075 coupling hubs are made from CNC sintered steel and rated at 73 inch-pounds of torque. A complete coupling assembly requires two hubs and a rubber spider insert, sold separately.
Typical Applications
These couplings are suitable for power transmission to industrial equipment such as pumps, log splitters, gearboxes, compressors, blowers, mixers, and conveyors. The flexible design makes the L-075 ideal for applications requiring shock absorption and accommodation of minor shaft misalignment without mechanical bearing damage.
Compatibility & Replacements
Compatible With
- Standard L-type jaw coupling systems
- Oil-resistant synthetic rubber spider inserts
- American and European industry standard pump/motor shaft separations
- General industrial motors and pump applications
Replaces / Drop-In Replacement For
- Interchangeable with Martin, Browning, TB Woods, and other L-jaw couplers
- OEM Lovejoy L-075 hubs across various bore diameters
Works With
- All standard L-type elastomeric spider inserts
- Set screw and keyway shaft retention systems
- Flexible coupling assemblies in ISO standard metric and US inch configurations
