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 |