Product Description
Valu-Jack VJ 55F146 precision steel ball, designed for use in manual pallet jack model 5500-2 hydraulic unit assemblies. Manufactured from hardened SAE 52100 steel, diameter 0.375 inch ±0.001 inch, Ra 8 μin minimum finish, static load capacity to 5000 lbs, engineered for hydraulic valve and lever subassemblies.
Compatibility: Fits pallet jacks made by Valu-Jack, model 5500-2 Hydraulic Unit. Alternate model: 55002 Hydraulic Unit; 5500 2 Hydraulic Unit. SKU: VJ 55F146
Specifications
Dimensional
| Surface Finish | Polished, minimum Ra 8 μin |
| Roundness Tolerance | ≤0.0001 inch |
| Bore Fit | Snap fit in 0.378 inch bore |
Material
| Material Specification | Hardened bearing-grade steel per SAE 52100 |
| Steel Hardness | Rockwell C62 minimum |
| Finish/Coating | Plain steel, oiled (no plating) |
Part Numbers
| Manufacturer Part Number | VJ 55F146 |
| OEM Compatibility | Fits Valu-Jack Model 5500-2 manual pallet jack |
Frequently Asked Questions
Q: What are the exact specifications of the VJ 55F146 steel ball?
A: The VJ 55F146 is a precision steel ball manufactured from hardened SAE 52100 bearing-grade steel. Diameter is 0.375 inch with a tolerance of plus or minus 0.001 inch. Roundness tolerance is 0.0001 inch. Surface finish is polished to a minimum of Ra 8 microinches.
Q: What is the Rockwell hardness specification of the VJ 55F146?
A: The VJ 55F146 has a minimum Rockwell C hardness of 62 (HRC 62). This hardness specification ensures the ball can withstand the pressure and friction loads within the hydraulic valve and lever assemblies of the Valu-Jack 5500-2 pallet jack.
Q: What is the load capacity of the VJ 55F146 steel ball?
A: The VJ 55F146 is engineered for static load capacity to 5000 pounds. This specification reflects its use in the hydraulic valve and lever subassemblies where it functions as a rolling or bearing element under the dynamic and static loads of the pallet jack system.
Q: Which Valu-Jack models use the VJ 55F146 steel ball?
A: The VJ 55F146 is compatible with Valu-Jack model 5500-2 Hydraulic Unit, including alternate designations 55002 Hydraulic Unit and 5500 2 Hydraulic Unit. It is used in the hydraulic valve and lever assemblies of these manual pallet jacks.
Q: Can the VJ 55F146 be used in applications other than Valu-Jack pallet jacks?
A: The VJ 55F146 is a precision bearing ball that could theoretically fit any assembly requiring a 0.375 inch diameter hardened steel ball. However, it is certified for use in Valu-Jack 5500-2 hydraulic units. For other applications, verify bore fit and load requirements match the specification before use.
Q: How long does the VJ 55F146 steel ball typically last in a pallet jack?
A: The VJ 55F146 is a precision bearing component engineered for extended service life under normal pallet jack operation. Lifespan depends on operating conditions, load cycles, and maintenance. Under typical warehouse use, it should provide years of reliable service. Replace if valve operation becomes stiff, jerky, or if the pallet jack loses lifting control.