Overview
The TB Woods L-150-1-1/8 is a precision-engineered L-Jaw coupling hub for industrial shaft alignment and power transmission. This TB Woods L-150-1-1/8 hub features a 1-1/8 inch bore diameter and 3.75 inch outside diameter, making it ideal for systems requiring reliable elastomeric coupling assemblies. The L-Jaw design accommodates both radial and angular misalignment while minimizing reaction loads on connected equipment. No lubrication or maintenance is required, making it a dependable choice for variable-speed and variable-torque applications across manufacturing, process control, and machinery automation.
Key Features
- Direct Interchangeability: TB Wood’s L-jaw coupling assemblies are directly interchangeable with industry standard couplings
- Bore Size 1-1/8″: Designed for mid-range shaft diameters in standard industrial equipment
- 3.75″ Outside Diameter: Compact form factor suitable for space-constrained installations
- Carbon Steel Construction: Durable hub material rated for reliable performance in heavy-duty environments
- No Maintenance Required: No lubrication or maintenance is required
- Flexible Assembly: Combine this coupling hub with another hub and a spider insert to form a complete L-jaw coupling assembly; spiders are sold separately
Technical Specifications
The L-150-1-1/8 hub is engineered to meet standard industrial coupling specifications. Key dimensional and performance parameters are listed below.
Typical Applications
- Pump drive couplings for centrifugal and positive displacement pumps
- Motor-to-gearbox connections with misalignment compensation
- Variable-speed drive systems in manufacturing equipment
- Industrial automation machinery requiring shock load protection
- OEM equipment assemblies with standard L-Jaw coupling requirements
Compatibility & Replacements
Compatible With
- TB Woods L-150 spider inserts (Buna-N, Urethane, or Hytrel materials)
- Standard L-Jaw coupling assemblies per industry coupling standards
- 1-1/8″ diameter solid shafts with standard round bore and keyway configuration
- Industrial motors, gearboxes, and driven equipment using elastomeric couplings
Replaces / Drop-In Replacement For
- Industry-standard L-Jaw hubs with 1-1/8″ bore and L-150 coupling size
- Other manufacturers’ equivalent L-150 series hubs (verify specifications before substitution)
Works With
- TB Woods L-150 elastomeric spider elements (part numbers L150N, L150U, L150H)
- Standard keyway configurations: 1/4″ width × 1/8″ depth
- Round bore with keyway shaft mounting systems
- Set screw shaft locking mechanism for secure bore engagement












