super precision bearings

Mating Structure for Axial-Radial Cylindrical Roller Bearings (RTC)Tolerance Recommendations for Machining the Shafts for Axial-Radial Cylindrical Roller BearingsDimensions in mmNominal shaft over 50 80 120 150 180 250 315 400 500 630 800 1000 1250diameter d 3 including 80 120 150 180 250 315 400 500 630 800 1000 1250 1600Tolerances in µmDeviation of d 3 0 0 0 0 0 0 0 0 0 0 0 0 0-13 -15 -18 -18 -20 -23 -25 -27 -28 -32 -36 -42 -50Roundness t 2 5 6 8 8 10 12 13 15 16 18 20 24 28Parallelism t 6 3 4 5 5 7 8 9 10 11 12 14 16 20Perpendicularity t 8 3 4 5 5 7 8 9 10 11 12 14 16 20Mean surface roughness R a 0.4 0.4 0.8 0.8 0.8 0.8 0.8 0.8 1.6 1.6 1.6 1.6 1.6Tolerance Recommendations for Machining the Housings for Axial-Radial Cylindrical Roller BearingsDimensions in mmNominal housing over 120 150 180 250 315 400 500 630 800 1000 1250 1600diameter D 3 including 150 180 250 315 400 500 630 800 1000 1250 1600 2000Tolerances in µmDeviation of D 3 +18 +18 +22 +25 +29 +33 +34 +38 +44 +52 +64 +76-7 -7 -7 -7 -7 -7 -10 -12 -12 -14 -14 -16Roundness t 2 8 8 10 12 13 15 16 18 20 24 28 32Parallelism t 6 5 5 7 8 9 10 11 12 14 16 20 22Perpendicularity t 8 5 5 7 8 9 10 11 12 14 16 20 22Mean surface roughness R a 0.8 0.8 0.8 0.8 0.8 0.8 1.6 1.6 1.6 1.6 1.6 1.6EngineeringFAG · 171