Product Description
Crown OEM Guide Spring CR 129140 for electric lift truck caster assemblies. This part ensures alignment and preload with a nominal spring free length of 75 mm and required assembly torque of 82–88 N·m. Compatible with PR 4500 Series and includes vertical mounting orientation with M12 thread interface.
Specifications
Part Numbers & Compatibility
| OEM Part Number | CR 129140 |
| Manufacturer Part Number | 129140 |
Frequently Asked Questions
Q: What is the CR 129140 guide spring designed for?
A: The CR 129140 is an OEM guide spring for Crown electric lift truck caster assemblies. It provides preload and alignment force to ensure consistent caster tracking and steering geometry during equipment operation. This spring maintains proper vertical load distribution across the caster wheel contact patch.
Q: What are the specifications of the CR 129140 guide spring?
A: The CR 129140 has a nominal spring free length of 75 mm and uses an M12 thread interface for mounting. Assembly requires a torque value of 82 to 88 Newton meters. These specifications ensure proper preload and prevent over-tightening or under-tensioning of the caster assembly.
Q: Which Crown equipment is the CR 129140 compatible with?
A: The CR 129140 is compatible with Crown PR 4500 Series electric lift trucks and pallet jacks. Verify your equipment belongs to the PR 4500 Series before ordering. Caster springs are model-specific and must match the original spring rate and length for proper steering and load handling.
Q: What happens if the CR 129140 spring becomes weak or fails?
A: A weakened or failed CR 129140 guide spring will cause loss of caster preload, resulting in inconsistent steering, wandering direction, or excessive caster wheel wobble. The equipment may pull to one side during operation or require excessive operator input to steer. Load stability is compromised and maneuverability becomes difficult or unsafe.
Q: Is the CR 129140 available for non-OEM installation?
A: The CR 129140 is an OEM Crown component. It is the specified spring for PR 4500 Series caster assemblies. Use only the CR 129140 for Crown PR 4500 equipment; do not substitute with aftermarket springs, as this may affect caster geometry and equipment performance.