Model Number 689-2Z(80089) Precision Rating P0 P6 P5 P4 Z1 Z2 Z3 Seals Type Open Number of Row Single Row Place of Origin Shandong, China (Mainland) material GCr15 Tolerance Rating ABEC-1,ABEC-3,ABEC-5 Rotational Speed 1000-5000 Hardness Chrome steel HRC60-HRC65 Vibration Rating V1,V2,V3 Quality System Certificate ISO9001:2000
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