Crane Axle 40-Spline Spindle Wheel Bearing Set
CA01030
The Crane Axle 40-Spline Spindle Wheel Bearing Set provides the bearings, races, seals, spacers, and retaining hardware required for Crane Axle 40-spline rear spindle assemblies. Built around Timken inner and outer wheel bearings, this complete wheel-end service package is specifically matched to the larger Crane 40-spline spindle system used in high-strength GM 14-Bolt axle builds.
A 40-spline axle system is built to transmit substantially higher drivetrain loads, making proper wheel-end support just as important as axle shaft strength. Quality tapered roller bearings, correct bearing spacing, proper preload, and effective sealing help keep the hub supported and rotating correctly under the large tires, high torque, side loading, and repeated impacts common in rock crawlers, rock bouncers, and competition axle assemblies.
Includes:
- (2) Timken Inner Bearings and Races
- (2) Timken Outer Bearings and Races
- (2) Wheel Seals
- (2) Bearing Spacers
- (2) Bearing Retaining Snap Rings
Important: This bearing set is designed specifically for the Crane Axle 40-Spline Rear Spindle System. It is not a replacement bearing kit for factory GM 14-Bolt spindles.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Crane Axle |
| Product Type | Spindle Wheel Bearing Set |
| Axle Platform | GM 14-Bolt |
| Spindle System | Crane Axle 40-Spline Rear Spindle |
| Axle Shaft Spline Count | 40 Spline |
| Bearing Manufacturer | Timken |
| Bearing Type | Tapered Roller |
| Inner Bearings & Races | (2) Included |
| Outer Bearings & Races | (2) Included |
| Wheel Seals | (2) Included |
| Bearing Spacers | (2) Included |
| Retaining Snap Rings | (2) Included |
| Installation Location | Rear Wheel Ends |
Fitment
Fits:
- Crane Axle 40-Spline Rear Spindle System
- Crane Axle 40-spline GM 14-Bolt spindle applications
- 40-spline axle assemblies using the matching Crane Axle spindle system
Does Not Fit:
- Factory GM 14-Bolt spindles
- Standard 30-spline GM 14-Bolt spindle systems
- Spindles using different bearing dimensions or wheel-end configurations
Installation Notes:
- Verify that the axle is equipped with Crane Axle 40-spline rear spindles before ordering.
- Inspect spindle and hub bearing surfaces for wear or damage before installing new bearings.
- Pack and lubricate bearings according to the wheel-end configuration being used.
- Correct bearing installation and preload are critical to wheel-end service life.
- Verify hub rotation and bearing adjustment before operating the vehicle.
FAQ
Does this bearing set fit a factory GM 14-Bolt spindle?
No. This bearing package is specifically designed for the Crane Axle 40-spline spindle system and should not be ordered as a replacement wheel bearing kit for a factory GM 14-Bolt spindle.
Why does the Crane 40-spline spindle use a dedicated bearing set?
The Crane Axle 40-spline spindle system is designed around larger 40-spline axle components rather than the dimensions of a factory 14-Bolt wheel end. The bearings, races, spacers, seals, and retaining components must therefore match the Crane spindle and hub configuration.
Why are tapered roller bearings used in the wheel end?
Tapered roller bearings are designed to support both radial loads from vehicle weight and axial loads generated through cornering and wheel movement. This makes them well suited to heavy-duty axle wheel ends subjected to large tires and severe off-road loading.
Why is wheel bearing preload important?
Correct bearing adjustment keeps the hub properly supported while allowing the bearings to rotate as intended. Improper adjustment can create excessive movement or heat and can shorten bearing, seal, spindle, and hub service life.
Does this kit service both sides of the axle?
Yes. The kit includes two inner bearings and races, two outer bearings and races, two wheel seals, two bearing spacers, and two retaining snap rings to service both rear wheel ends of the matching Crane Axle 40-spline spindle system.
