Product Description
The CR 120398 is a precision shaft weldment engineered for Crown Wave electric pallet jack drive assemblies. Manufactured from hardened SAE 1045 steel with precision-ground bearing surfaces, this component ensures reliable power transmission and smooth lifting operation. The industrial phosphate conversion coating provides corrosion protection in demanding warehouse environments. Direct replacement for Crown Wave equipment.
Specifications
Material
| Steel Grade | SAE 1045 normalized steel |
| Hardness | Rockwell C35 minimum at bearing surfaces |
| Finish/Coating | Industrial phosphate conversion coating |
Part Information
| Part Number | CR 120398 |
| Component Location | Drive Unit Assembly, Index 8 |
Frequently Asked Questions
Q: What is the CR 120398 shaft weldment and where does it fit in a Crown Wave pallet jack?
A: The CR 120398 is a shaft weldment component located in the drive unit assembly (Index 8) of Crown Wave electric pallet jacks. This shaft connects power transmission components and supports rotating bearing loads during lifting and horizontal transport operations.
Q: What material and hardness specifications does the CR 120398 shaft weldment have?
A: The CR 120398 is manufactured from SAE 1045 normalized steel with a minimum Rockwell C35 hardness at bearing surfaces. The shaft features precision ground bearing surfaces for accurate fit and smooth rotation, with an industrial phosphate conversion coating for corrosion protection.
Q: What are the key features of the CR 120398 shaft design?
A: The CR 120398 includes a standardized keyway for drive coupling, end threads for bearing preload adjustment, and precision ground surfaces at bearing contact points. These features ensure proper fitment and load distribution through the drive assembly.
Q: Is the CR 120398 shaft compatible with other Crown models or different brands?
A: The CR 120398 is engineered specifically for Crown Wave Work Assist Vehicles. Drive assembly geometry, bearing spacing, and coupling interfaces differ across Crown models and other manufacturers. Verify compatibility with your equipment's specification documentation before ordering.
Q: What inspection is recommended for the CR 120398 shaft weldment?
A: Inspect bearing surfaces for rust, scoring, or pitting, especially in cold storage or wet environments. Verify the phosphate coating is intact and undamaged. Check that the keyway and threads are clean and free from corrosion. Regular bearing lubrication around the shaft is critical for longevity.
Q: What symptoms indicate the CR 120398 shaft needs replacement?
A: Warning signs include squealing or grinding noise from the drive unit, excessive vibration during operation, difficulty lifting loads smoothly, or visible runout when the truck is lifted. These indicate bearing wear or shaft damage requiring immediate replacement to prevent further drive assembly damage.