Product Description
Sealed deep groove ball bearing assembly for manual pallet jack load wheels and steer wheels. Inner diameter: 20 mm; outer diameter: 47 mm; width: 14 mm; standard type: 6204-2RS. Compatible with standard 20 mm bearing bore sockets in pallet jack assemblies. Manufactured from through-hardened bearing steel with nitrile rubber seals.
Specifications
Material
| Bearing Material | Through-hardened bearing steel |
| Seal Material | Nitrile rubber bonded to steel |
Frequently Asked Questions
Q: What are the dimensions of the 640057 sealed deep groove ball bearing assembly?
A: The 640057 bearing assembly has an inner diameter of 20 mm, outer diameter of 47 mm, and width of 14 mm. It is a 6204-2RS sealed deep groove ball bearing designed for manual pallet jack load wheels and steer wheels.
Q: Which pallet jack models and brands does the 640057 bearing fit?
A: The 640057 is compatible with manual pallet jack assemblies featuring standard 20 mm bearing bore sockets. This includes equipment from Crown, Toyota, Raymond, Yale, Hyster, and similar manufacturers. Verify your equipments bearing bore diameter matches 20 mm before ordering.
Q: What materials are used in the 640057 bearing assembly?
A: The 640057 uses through-hardened bearing steel for the ball races and nitrile rubber seals bonded to steel. This construction provides corrosion resistance and extended service life in material handling environments.
Q: What does the 2RS designation mean on the 640057 bearing?
A: The 2RS designation indicates the bearing has seals on both sides of the bearing races. These nitrile rubber seals keep contaminants out and bearing grease in, reducing maintenance frequency and extending bearing life in warehouse and facility environments.
Q: How long does the 640057 sealed bearing typically last in service?
A: Expected lifespan depends on load, speed, and operating conditions. With proper maintenance and typical manual pallet jack usage, sealed deep groove ball bearings of this type generally provide 2 to 5 years of service before requiring replacement. High-volume or rough handling environments may reduce this timeframe.
Q: Is the 640057 bearing sealed for use in wet or cold storage environments?
A: The nitrile rubber seals on the 640057 provide protection against moisture and dust in standard warehouse conditions. However, for extended exposure to wet floors, washdown environments, or temperatures below 40 degrees Fahrenheit, verify seal material compatibility with your storage facility conditions.
