FSC 3110

Note-This class includes bearings that generally have roller or balls confined by an inner and outer ring to relieve friction in/on/around rotating/moving mechanisms.

Includes Ball Bearings; Roller Bearings; Balls; Races.
Excludes Plain Bearings (FSC 3120); Jewel Bearings (FSC 3120)

FSC 3120

Note-Bearings in this class are generally one piece that retain and position moving and/or rotating parts. They may have lubrication grooves/fittings/facilities or include pre-lubrication.

Includes Sleeve Bearings; Split Bearings; Washer Type Bearings; Jewel Bearings.
Excludes Antifriction Bearings (FSC 3110); Mounted Bearings (FSC 3130).

FSC 3130

Note-This class includes bearings that generally have roller or balls confined by an inner and outer ring to relieve friction in/on/around rotating/moving mechanisms.

Includes Pillow Block Units; Cartridge Units; Flange Units; Takeup Units; Hanger Box Units; Flat Box Units; Step Box Units.
Excludes Antifriction Bearings (FSC 3110); Plain Unmounted Bearings (FSC 3120).