軸承精度，是指尺寸精度和旋轉精度。GOOT軸承精度等級分為：P0、P6、P5、P4等效采用ISO標準。不同標準精度等級對比如下：
精度等級對照：
| 標準代號 | 精度等級 | |||
| GB | P0 | P6 | P5 | P4 |
| ISO | NORMAL CLASS | CLASS6 | CLASS | CLASS4 |
| SKF | P0 | P6 | P5 | P4 |
| DIN | P0 | P6 | P5 | P4 |
| JIS | P0 | P6 | P5 | P4 |
| ANSI | ABEC-1 | ABEC-3 | ABEC-5 | ABEC-7 |
向心軸承公差（內圈）
|
精度等級 Accuracy class |
D mm From To |
△ dmp | V dsp | Vdmp | Kia | Sd | Sia | △ Bs |
VBs max |
|||||
|
上偏差 Upper deviation |
下偏差 Lower deviation |
9 | 0.1 | 2.3.4 |
上偏差 Upper deviation |
下偏差 Lower deviation |
||||||||
| max | max | max | max | max | max | max | ||||||||
| P0 | 0.6 | 2.5 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | / | 20 | 0 | -40 | 12 |
| 2.5 | 10 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | / | 20 | 0 | -120 | 15 | |
| 10 | 18 | 0 | -8 | 10 | 8 | 6 | 6 | 10 | / | 20 | 0 | -120 | 20 | |
| 18 | 30 | 0 | -10 | 13 | 10 | 8 | 8 | 13 | / | 24 | 0 | -120 | 20 | |
| 30 | 50 | 0 | -12 | 15 | 12 | 9 | 9 | 15 | / | 24 | 0 | -120 | 20 | |
| P6 | 0.6 | 2.5 | 0 | -7 | 9 | 7 | 5 | 5 | 5 | / | 10 | 0 | -40 | 12 |
| 2.5 | 10 | 0 | -7 | 9 | 7 | 5 | 5 | 6 | / | 10 | 0 | -120 | 15 | |
| 10 | 18 | 0 | -7 | 9 | 7 | 5 | 5 | 7 | / | 12 | 0 | -120 | 20 | |
| 18 | 30 | 0 | -8 | 10 | 8 | 6 | 6 | 8 | / | 12 | 0 | -120 | 20 | |
| 30 | 50 | 0 | -10 | 13 | 10 | 8 | 8 | 10 | / | 12 | 0 | -120 | 20 | |
| P5 | 0.6 | 2.5 | 0 | -5 | 5 | 4 | 4 | 3 | 4 | 7 | 7 | 0 | -40 | 5 |
| 2.5 | 10 | 0 | -5 | 5 | 4 | 4 | 3 | 4 | 7 | 7 | 0 | -40 | 5 | |
| 10 | 18 | 0 | -5 | 5 | 4 | 4 | 3 | 4 | 7 | 7 | 0 | -80 | 5 | |
| 18 | 30 | 0 | -6 | 6 | 5 | 5 | 3 | 4 | 8 | 8 | 0 | -120 | 5 | |
| 30 | 50 | 0 | -8 | 8 | 6 | 6 | 4 | 5 | 8 | 8 | 0 | -120 | 5 | |
| P4 | 0.6 | 2.5 | 0 | -4 | 4 | 3 | 3 | 2 | 2.5 | 3 | 3 | 0 | -40 | 2.5 |
| 2.5 | 10 | 0 | -4 | 4 | 3 | 3 | 2 | 2.5 | 3 | 3 | 0 | -40 | 2.5 | |
| 10 | 18 | 0 | -4 | 4 | 3 | 3 | 2 | 2.5 | 3 | 3 | 0 | -80 | 2.5 | |
| 18 | 30 | 0 | -5 | 5 | 4 | 4 | 2.5 | 3 | 4 | 4 | 0 | -120 | 2.5 | |
| 30 | 50 | 0 | -6 | 6 | 5 | 5 | 3 | 4 | 4 | 4 | 0 | -120 | 3 | |
向心軸承公差（外圈）
|
精度等級 Accuracy class |
D mm From To |
△ dmp | V dsp 直徑系列 | Vdmp | Kea | Sea | Sd | △ Cs |
VCs max |
||||||
|
上偏差 Upper deviation |
下偏差 Lower deviation |
開型軸承 | 閉型軸承 |
上偏差 Upper deviation |
下偏差 Lower deviation |
||||||||||
| 9 | 0.1 | 2.3.4 | 2.3.4 | ||||||||||||
| max | max | max | max | ||||||||||||
| P0 | 2.5 | 6 | 0 | -8 | 10 | 8 | 6 | 10 | 6 | 15 | / | / | 0 | -40 | 12 |
| 6 | 18 | 0 | -8 | 10 | 8 | 6 | 10 | 6 | 15 | / | / | 0 | -120 | 15 | |
| 18 | 30 | 0 | -9 | 12 | 9 | 7 | 12 | 7 | 15 | / | / | 0 | -120 | 20 | |
| 30 | 50 | 0 | -11 | 14 | 11 | 8 | 16 | 8 | 20 | / | / | 0 | -120 | 20 | |
| P6 | 2.5 | 6 | 0 | -7 | 9 | 7 | 5 | 9 | 5 | 8 | / | / | 0 | -40 | 12 |
| 6 | 18 | 0 | -7 | 9 | 7 | 5 | 9 | 5 | 8 | / | / | 0 | -120 | 15 | |
| 18 | 30 | 0 | -8 | 10 | 8 | 6 | 10 | 6 | 9 | / | / | 0 | -120 | 20 | |
| 30 | 50 | 0 | -9 | 11 | 9 | 7 | 13 | 7 | 10 | / | / | 0 | -120 | 20 | |
| P5 | 2.5 | 6 | 0 | -5 | 5 | 4 | 4 | / | 3 | 5 | 8 | 8 | 0 | -40 | 5 |
| 6 | 18 | 0 | -5 | 5 | 4 | 4 | / | 3 | 5 | 8 | 8 | 0 | -40 | 5 | |
| 18 | 30 | 0 | -6 | 6 | 5 | 5 | / | 3 | 6 | 8 | 8 | 0 | -80 | 5 | |
| 30 | 50 | 0 | -7 | 7 | 5 | 5 | / | 4 | 7 | 8 | 8 | 0 | -120 | 5 | |
| P4 | 2.5 | 6 | 0 | -4 | 4 | 3 | 3 | 3 | 2 | 3 | 5 | 4 | 0 | -40 | 2.5 |
| 6 | 18 | 0 | -4 | 4 | 3 | 3 | 3 | 2 | 3 | 5 | 4 | 0 | -40 | 2.5 | |
| 18 | 30 | 0 | -5 | 5 | 4 | 4 | 4 | 2.5 | 4 | 5 | 4 | 0 | -80 | 2.5 | |
| 30 | 50 | 0 | -6 | 6 | 5 | 5 | 5 | 3 | 5 | 5 | 4 | 0 | -120 | 2.5 | |
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