Square Bar Straight Spindle for 2,000 lb Trailer Axles
Part Number: SP-150BT16-SQ-KIT
This square bar straight spindle is used in light-duty trailer axle assemblies commonly found on utility, landscape, and small equipment trailers. It is designed to work with L44649 inner and outer wheel bearings and a 10-60 grease seal, making it a common replacement choice when rebuilding or fabricating 2,000 lb class straight axles.
Typical applications include custom axle builds, spindle replacement after bearing or spindle damage, and repairs where the original axle tube is reused and new weld-on spindles are required. This spindle is commonly paired with standard idler hubs that use L44649 bearings.
Features
- Straight spindle design with square bar mounting surface
- Common fitment for 2,000 lb rated straight trailer axles
- Accepts standard L44649 inner and outer wheel bearings
- Designed for use with 10-60 grease seals
- Weld-on installation for axle fabrication or repair
Specifications
| Spindle Style | Straight spindle, square bar |
| Typical Axle Class | 2,000 lb |
| Bearing Fitment | L44649 inner and outer |
| Grease Seal Size | 10-60 |
| Mounting Method | Weld-on |
| Common Uses | Utility trailers, small equipment trailers, custom axle builds |
Fitment is based on bearing and seal compatibility rather than trailer brand or model. Verify spindle dimensions, bearing numbers, and seal size before installation. Professional welding and proper axle alignment are required.