20MM Bearing with 2 Rubber Shields at Nr

Frequently Asked Questions

Q: What equipment does the NR 12-00047 bearing fit?
A: The NR 12-00047 is a 20mm bearing with dual rubber shields used in material handling equipment including pallet jacks, hand trucks, and load wheels from Crown, Toyota, Raymond, and Yale. Verify shaft diameter and mounting bore match your equipment before ordering.

Q: What do the rubber shields on this bearing protect against?
A: The dual rubber shields seal out contaminants such as dust, dirt, and moisture that can degrade bearing performance. This makes the bearing suitable for warehouse, dock, and general indoor material handling environments where occasional spillage or light debris exposure occurs.

Q: How long does this bearing typically last in normal use?
A: Under normal warehouse and pallet jack operation, a properly installed 20mm sealed bearing lasts 2 to 3 years before noise or binding develops. Lifespan depends on load frequency, maintenance, and environmental conditions. Wet or cold storage environments may reduce service life.

Q: What are the symptoms that this bearing needs replacement?
A: Replace the bearing if you hear grinding or squealing noise from the wheel hub, feel grinding resistance when rolling freely, or observe wheel wobble during operation. These are signs the bearing races or rollers have failed.