Product Description
Precision deep groove ball bearing assembly for manual pallet jack fork and wheel applications; nominal dimensions 20mm bore x 47mm OD x 14mm width, double sealed (2RS), compatible with standard manual pallet jack assemblies.
Specifications
Material & Construction
| Ball Material | Chrome steel per SAE 52100 |
| Race Material | Chrome steel per SAE 52100 |
| Cage Material | Stamped steel |
Frequently Asked Questions
Q: What equipment is bearing 851650 compatible with?
A: Bearing 851650 is a precision deep groove ball bearing assembly designed for manual pallet jack fork and wheel applications. The 20mm bore and 47mm outer diameter dimensions are standard across many manual pallet jack manufacturers including Crown, Toyota, Raymond, and Yale. Verify that these dimensions match your equipment specification before ordering.
Q: What are the exact dimensions and material specifications of bearing 851650?
A: Bearing 851650 features a nominal bore of 20mm, outer diameter of 47mm, and width of 14mm. The races and balls are manufactured from chrome steel per SAE 52100, providing hardness and wear resistance. The cage is stamped steel, and the bearing includes double seals (2RS) for contamination protection. These specifications make it suitable for standard manual pallet jack fork and wheel assemblies under typical warehouse loads.
Q: Is bearing 851650 suitable for wet floors and cold storage environments?
A: Bearing 851650 features double-sealed (2RS) design for protection in standard warehouse conditions. However, for extended use in wet floors, freezers, or cold storage below 0 degrees Celsius, verify that the seal materials and lubricant are rated for those temperatures and moisture exposure. Some seals and greases can become brittle or lose effectiveness in cold, wet environments.
Q: What are the failure symptoms of bearing 851650, and how long does it typically last?
A: Bearing 851650 failure typically presents as grinding or squealing noises during pallet jack operation, rough wheel rotation, or lateral play in the fork or wheel assembly. In normal warehouse service, a properly sealed bearing can provide 3-5 years of operation. Exposure to heavy loads, impacts, or inadequate lubrication will reduce service life. Replace immediately upon detecting noise or play to prevent secondary damage.
Q: Can bearing 851650 be used as a cross-reference for other bearing part numbers?
A: Bearing 851650 is specified for manual pallet jack applications with 20mm bore, 47mm outer diameter, and 14mm width. Use this part number only for equipment matching these dimensions and application requirements. If you need to cross-reference or substitute a different bearing, verify that bore diameter, outer diameter, width, seal type, and load rating match the original specification exactly.
Q: What maintenance or care does bearing 851650 require?
A: Bearing 851650 is a sealed cartridge bearing requiring minimal maintenance. The double seals protect the internal grease, so no periodic relubrication is needed. Monitor the pallet jack fork and wheels for unusual noise, stiffness, or play during normal use. If you detect these symptoms, the bearing has likely failed and should be replaced.