Product Description
Liftsplus.com HP-507 single shield bearing assembly for manual pallet jack parts, designed as a wheel bearing for standard hydraulic hand trucks. Constructed using high-carbon steel and featuring pre-lubricated, single shielded ball bearing configuration for load wheel or steer wheel positions. Compatible with standard manual pallet jack models requiring 20 mm ID x 47 mm OD x 14 mm bearing.
Specifications
Material & Construction
| Material Specification | Bearing races: high-carbon chromium steel (AISI 52100 or equivalent) |
| Ball Material | Precision ground hardened steel |
| Cage Material | Stainless or carbon steel, open cage |
| Finish/Coating | Oil-protective finish (phosphate or equivalent, where used) |
Part Numbers
| OEM Part Number | HP-507 |
| Manufacturer Part Number | HP-507 |
Frequently Asked Questions
Q: What are the exact dimensions of the HP-507 bearing assembly?
A: The HP-507 is a single shield bearing assembly with inner diameter (ID) of 20 mm, outer diameter (OD) of 47 mm, and width of 14 mm. These metric dimensions make it a standard size for manual pallet jack load wheel and steer wheel applications across multiple OEM brands including Crown, Toyota, and Raymond.
Q: What material composition does the HP-507 use?
A: The HP-507 features high-carbon chromium steel bearing races (AISI 52100 or equivalent), precision ground hardened steel balls, and stainless or carbon steel open cage construction. The bearing is pre-lubricated and treated with an oil-protective finish to protect against corrosion in wet, cold storage, and outdoor warehouse conditions.
Q: Which manual pallet jack models use the 20 mm x 47 mm x 14 mm bearing size?
A: The 20x47x14 mm bearing size is standard across most manual hydraulic hand trucks from major OEMs. Verify your equipment specifications by checking the original bearing marking or your pallet jack documentation. The HP-507 is compatible with standard manual pallet jacks and hand trucks requiring this exact bore and dimension.
Q: How does the single shield design affect HP-507 performance in cold storage?
A: The single shield allows lubricant to remain fluid in cold storage environments without excessive thickening compared to fully sealed bearings. However, inspect the HP-507 regularly in cold storage for grease breakdown and corrosion. The oil-protective finish provides baseline corrosion resistance, but temperature extremes may shorten bearing life; plan for replacement every 1500 to 3000 operating hours in freezer environments.
Q: What failure symptoms indicate the HP-507 bearing needs replacement?
A: Replace the HP-507 if you observe grinding or squeaking noise, wheel wobble, visible rust or discoloration, or increased resistance when rolling the load. These symptoms indicate bearing race damage, ball wear, or lubricant breakdown. Continued operation with a failing bearing can damage the load wheel and affect pallet jack steering and control.
Q: Is the HP-507 compatible with both load wheel and steer wheel positions?
A: Yes, the HP-507 is designed for both load wheel and pivot (steer wheel) positions on manual pallet jacks. Load wheel bearings carry greater weight and may wear faster than steer wheel bearings. If replacing only one bearing, consider inspecting and replacing steer wheel bearings at the same time to ensure uniform rolling characteristics.
