SKF 71808 ACD/HCP4 Angular Contact Ball Bearing

Technical specification MetricImperial DIMENSIONS d 40 mmD 52 mmB 7 mmd1 44.1 mmd2 44.1 mmD1 48.1 mmr1,2min. 0.3 mmr3,4min. 0.15 mma 14.3 mm ABUTMENT DIMENSIONS damin. 42 mmdbmin. 42 mmDamax. 50 mmDbmax. 51.2 mmramax. 0.3 mmrbmax. 0.15 mmdn 44.5 mm CALCULATION DATA Basic dynamic load ratingC 4.49 kNBasic static load ratingC0 4.55 kNFatigue load limitPu 0.143 kNAttainable speed for grease lubrication 28000 r/minAttainable speed for oil-air lubrication 43000 r/minContact angle? 25 °Ball diameterDw 3.175 mmNumber of ballsz 29Reference grease quantityGref 0.31 cm³PRELOAD AND STIFFNESS (BACK-TO-BACK, FACE-TO-FACE)Preload class AGA 40 NStatic axial stiffness, preload class A 93 N/µmPreload class BGB 120 NStatic axial stiffness, preload class B 145 N/µmPreload class CGC 240 NStatic axial stiffness, preload class C 197 N/µmCALCULATION FACTORSCalculation factorf 1.23Calculation factorf1 0.97Calculation factorf2A 1Calculation factorf2B 1.09Calculation factorf2C 1.17Calculation factorfHC 1.02Calculation factore 0.68Calculation factor (single, tandem)Y2 0.87Calculation factor (single, tandem)Y0 0.38Calculation factor (single, tandem)X2 0.41Calculation factor (back-to-back, face-to-face)Y1 0.92Calculation factor (back-to-back, face-to-face)Y2 1.41Calculation factor (back-to-back, face-to-face)Y0 0.76Calculation factor (back-to-back, face-to-face)X2 0.67 MASS Mass bearing 0.029 kg