Dimensional accuracy for industry bearings is a measure of the error between the actual dimensions of the bearings (bore diameter, outer diameter, inner ring width, outer ring width) and the target value for these dimensions.
| Standard | Application standard
| Precision
| Bearing Type |
| International standard | ISO492 | Standard level grade 6X | Grade 6 | Grade 5 | Grade 4 | Grade 2 | Radial bearing |
| ISO199 | standard level | Grade 6 | Grade 5 |
| --- | Thrust ball bearing |
| ISO578 | Grade 4 | --- | Grade 3 | Grade 0 | Grade 00 | Tapered roller bearing(inch) |
| Germany standard | DIN620 | P0 | P6 | P5 | P4 | P2 | All types |
| American standard | ANSI/ARMA std.20 | ABEC-1 | ABEC-3 | ABEC-5 |
|
| Radial bearing(except tapered roller bearing)
|
| RBEX-1 | RBEC-3 | RBEC-5 | ABEC-7 | ABEC-9 |
| SKF |
| P0 | P6 | P5 | P4 | P2 |
|
| Japanese standard | JIS B 1514 | Grade 0.6 | Grade 6 | Grade 5 | Grade 4 | Grade 2 | All types |
