Flanged ball bearings are available open, shielded or sealed. With bore sizes as small as 1mm. The smaller sizes are sometimes referred to as instrument bearings. 1) material: chrome steel or carbon steel 2) cage: steel 3) ball: steel 4) precision: p0 - p6 5) vibration: z1 - z3 6) clearance: c0 - c5 7) application: precision instrument, low noise electromotor, automobile and motorcycle, etc.
