Auxiliary Motors & Machinery

Electric motors, fans, pumps and small high-speed machinery commonly use deep groove and specialty ball bearings. Their priorities differ from those of heavy roller positions: low noise, sustained speed, limited space and, on some motors, protection from stray electrical current. Buyers want the correct shield or seal, clearance and material specified on small and easily overlooked items.

• Include seal or shield type and clearance suffixes, such as 2Z and C3, because they change how the bearing performs at the same size.
• Consider electrically insulated or ceramic bearings on motors where stray current could damage raceways, and confirm the requirement with the motor specification.
• Check speed, temperature and lubricant life together when selecting sealed bearings that will not be relubricated.
• Confirm exact dimensions and precision class for miniature and instrument bearings, where small differences can prevent correct fit.