FAG bearing type and applicable accuracy grade:
Bearing form Applicable standard Applicable accuracy grade
Deep groove ball bearings GB307 Level 0 Level 6 Level 5 Level 4 Level 2
Angular contact ball bearings 0 level 6 level 5 level 4 level 2 level
Self-aligning ball bearing
Cylindrical Roller Bearings 0 Class 6 Level 5 Level 4 Level 2
Tapered roller bearings Metric series (single row) GB307 Level 0 Level 6 Level 6 Level 5 Level 4
Metric series (double row, four columns) SB/T5341994 Level 0
Inch Series SB/CO/T1089 Class4 Class2 Class3 Class0 Class00
Spherical roller bearings GB307 Level 0
Thrust ball bearing 0 level 6 level 5 level 4 level
Thrust spherical roller bearings
The GB/T30794 standard divides the bearing grade into G E D C B. The ISO, JIS and other standards are as follows:
Standard accuracy
GB/T30794 B C D E G
ISO CLASS2 CALSS4 CLASS5 CLASS6 NORMAL CLASS
DIN P2 P4 P5 P6 P0
ANSI ABEC9 ABEC7 ABEC5 ABEC3 ABEC1
JIS JIS2 JIS4 JIS5 JIS6 JIS0
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