Bearing Tolerance Symbols & Definitions
| d/ds | Nominal bore diameter/Single bore diameter |
| dmp | Mean bore diameter; arithmetical mean of the largest & smallest single bore diameters measured in one radial plane |
| △dmp | dmp-d; Deviation of mean bore diameter from the nominal dimension |
| △ds | ds-d; deviation of single bore diameter from the nominal dimension |
| Vdp | Bore diameter variation; difference between the largest & smallest single bore diameters in one radial plane |
| Vdmp | dmp max-dmp min; Mean bore diameter variation; difference between the largest & smallest mean bore diameters |
| D/DS | Nominal outside diameter/Single outside diameter |
| Dmp | Mean outside diameter; arithmetical mean of the largest & smallest single outside diameters in one radial plane |
| △dmp | Dmp-D; Deviation of mean outside diameter from nominal dimension |
| △Ds | Ds-D; Deviation of mean outside diameter from nominal dimension |
| Vdp | Outside diameter variation; difference between the largest & smallest single outside diameter in one radial plane |
| VDmp | Dmp max-Dmp min; Mean outside diameter variation; difference between the largest & smallest mean outside diameters |
| Bs/Cs | Single inner ring/outer ring width |
| △Bs | Bs-B; Deviation of a single inner ring width from nominal dimension |
| △Cs | Cs-C; Deviation of a single outer ring width from nominal dimension |
| VBs | Bs max-Bs-min; Variation of inner ring widths; difference between the largest & smallest single inner ring width |
| VCs | Cs max-Cs min; Variation of outer ring widths; difference between the largest & smallest single outer ring width |
| B,C,T | Nominal bearing width/height |
| Ts | Actual bearing width/height |
| △Ts | Deviation of the actual bearing width/height |
| Kia | Radial runout of assembled bearing inner ring |
| Kea | Radial runout of assembled bearing outer ring |
| Sd | Side face runout of inner ring with reference to bore |
| SD | Variation in inclination of outside cylindrical surface to outer ring side face |
| Sia | Axial runout; assembled bearing inner ring face runout with raceway |
| r | Norminal chamfer dimension |
| rs | Radial/axial single chamfer dimension |
| rs min | Smallest radial/axial single chamfer dimension |
| rs max | Largest radial/axial single chamfer dimension |