Material: AISI440C for rings & rolling components,HRC58+4; AISI304 for retainers, shields, seal skeletons
Stainless Steel Bearings:

Precision: P0 or P6 are available
Vibration: Z1 or Z2 for deep groove ball bearings
Rolling components: AISI440C balls G10 or Si3N4 balls G5; AISI440C needle G2
Lubrication: Mobil HP,25-35% filled