Overview
The Lovejoy L-099 jaw coupling hub (part number 68514411338) is an industry-standard flexible coupling component engineered for reliable torque transmission in industrial and commercial applications. This hub accommodates angular and parallel shaft misalignment without binding, protecting connected equipment from shock loads and vibration. Built with sintered iron construction, it offers fail-safe operation and requires no metal-to-metal contact between shafts.
Key Features
- Flexible jaw design accommodates up to ±2° angular misalignment and axial offset
- Elastomeric spider insert provides damping and fail-safe protection
- Sintered iron construction for durability and consistent performance
- Compact 2.54″ OD footprint fits confined spaces
- Keyway design ensures positive drive without slipping
- No special tools required for installation or maintenance
Technical Specifications
- Bore Size: 3/4″ (0.750″)
- Keyway: 3/16″ W × 13/32″ D
- Outside Diameter: 2.54″
- Maximum Torque: 318 in-lbs
- Horsepower Rating: 18 HP @ 3600 RPM
- Material: Sintered Iron
- Type: Jaw Coupling Hub (standard L-type)
- Maximum Speed: 3600 RPM (with elastomer spider)
Typical Applications
The L-099 jaw coupling hub is commonly used in:
- Centrifugal pump drives
- Electric motor-to-pump connections
- Fluid transfer systems
- Agricultural equipment drive shafts
- Log splitter and hydraulic power units
- HVAC compressor coupling
- Small to medium industrial machinery
Compatibility & Replacements
Compatible With
- Lovejoy elastomeric spider inserts (standard snap-wrap or radially removable designs)
- 1/4″, 5/8″, 3/4″, and larger bore coupling hubs in the L-099 series
- Standard shaft keyways per ANSI B4.1 metric equivalents
- Pump and motor flange mounting systems
- Industrial three-phase AC motor shafts
Replaces / Drop-In Replacement For
- Martin Flexible Coupling L-099 (identical design)
- Other 3/4″ bore jaw coupling hubs rated for 318 in-lbs torque
- Lovejoy L-099 models with alternative keyway configurations upon verification
Works With
- Elastomeric spider inserts in NBR, urethane, or Hytrel™ material
- Flexible coupling alignment tools and dial indicators
- Standard mechanical power transmission assembly methods
- Shaft alignment within ±0.005″ TIR for optimal life
