super precision bearings

HousingR aATolerance SymbolsDt 1t 3t 4t 5R a= Nominal housing bore= Cylindrical form tolerance(DIN ISO 1101)= Flatness tolerance(DIN ISO 1101)= Axial runout tolerance(DIN ISO 1101)= Coaxiality tolerance(DIN ISO 1101)= Mean surface roughness(DIN 4768)At 3t 4 AR at 1t 3t4 A-BR aR aDBDDR aR aøt 5 /300 Bt 1øt 5 /300 ASpacer sleevesTolerance SymbolsAR at1R aBd 2D 2t 1t 4t 6t 7R a= Nominal spacer sleevebore= Cylindrical form tolerance= Zylinderform(DIN ISO 1101)= Axial runout tolerance(DIN ISO 1101)= Parallelism tolerance(DIN ISO 1101)= Radial runout tolerance(DIN ISO 1101)= Mean surface roughness(DIN 4768)d 2AD 2R aR aR aR aR aR at 6t 4 A-Bt 1t 7 A-BD 2d 2BEngineeringt 6t 4 A-BFAG · 163