Product name
spherical roller bearings 21304 roller bearings size 20*52*15mm
Material
Chrome steel, Carbon steel, Stainless steel
Vibration level codes
V4, V3, V2, V1
Tolerance level
ABEC-1 (P0) ABEC-3 (P6),ABEC-5
Noise Level
EMQ V1 Z2 EMQ V2 Z3 EMQ V3 Z4
internal clearance codes
C2,C0,C3,C4,C5