SKF
SKF 71907 ACE/P4AL Angular Contact Ball Bearing
Product Code:71907 ACE/P4AL
Description
Technical specification MetricImperial DIMENSIONS d 35 mmD 55 mmB 10 mmd1 41.7 mmd2 40.2 mmD1 48.29 mmb 1.6 mmC1 5.1 mmC2 1.8 mmC3 1.2 mmr1,2min. 0.6 mmr3,4min. 0.3 mma 16.2 mm ABUTMENT DIMENSIONS damin. 38.2 mmdbmin. 37 mmDamax. 51.8 mmDbmax. 53 mmramax. 0.6 mmrbmax. 0.3 mmdn 43 mm CALCULATION DATA Basic dynamic load ratingC 7.28 kNBasic static load ratingC0 4.5 kNFatigue load limitPu 0.19 kNAttainable speed for grease lubrication 32000 r/minAttainable speed for oil-air lubrication 50000 r/minContact angle? 25 °Ball diameterDw 5.556 mmNumber of ballsz 19Reference grease quantityGref 0.8 cm³PRELOAD AND STIFFNESS (BACK-TO-BACK, FACE-TO-FACE)Preload class AGA 66 NStatic axial stiffness, preload class A 69 N/µmPreload class BGB 200 NStatic axial stiffness, preload class B 104 N/µmPreload class CGC 400 NStatic axial stiffness, preload class C 136 N/µmCALCULATION FACTORSCalculation factorf 1.05Calculation factorf1 0.99Calculation factorf2A 1Calculation factorf2B 1.04Calculation factorf2C 1.07Calculation factorfHC 1Calculation 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 0.075 kg
Technical Specifications
Technical specification 
DIMENSIONS
| d | 35 mm | |
|---|---|---|
| D | 55 mm | |
| B | 10 mm | |
| d1 | 41.7 mm | |
| d2 | 40.2 mm | |
| D1 | 48.29 mm | |
| b | 1.6 mm | |
| C1 | 5.1 mm | |
| C2 | 1.8 mm | |
| C3 | 1.2 mm | |
| r1,2 | min. 0.6 mm | |
| r3,4 | min. 0.3 mm | |
| a | 16.2 mm |
ABUTMENT DIMENSIONS
| da | min. 38.2 mm | |
|---|---|---|
| db | min. 37 mm | |
| Da | max. 51.8 mm | |
| Db | max. 53 mm | |
| ra | max. 0.6 mm | |
| rb | max. 0.3 mm | |
| dn | 43 mm |
CALCULATION DATA
| Basic dynamic load rating | C | 7.28 kN |
|---|---|---|
| Basic static load rating | C0 | 4.5 kN |
| Fatigue load limit | Pu | 0.19 kN |
| Attainable speed for grease lubrication | 32000 r/min | |
| Attainable speed for oil-air lubrication | 50000 r/min | |
| Contact angle | ? | 25 ° |
| Ball diameter | Dw | 5.556 mm |
| Number of balls | z | 19 |
| Reference grease quantity | Gref | 0.8 cm³ |
| Preload class A | GA | 66 N |
|---|---|---|
| Static axial stiffness, preload class A | 69 N/µm | |
| Preload class B | GB | 200 N |
| Static axial stiffness, preload class B | 104 N/µm | |
| Preload class C | GC | 400 N |
| Static axial stiffness, preload class C | 136 N/µm |
| Calculation factor | f | 1.05 |
|---|---|---|
| Calculation factor | f1 | 0.99 |
| Calculation factor | f2A | 1 |
| Calculation factor | f2B | 1.04 |
| Calculation factor | f2C | 1.07 |
| Calculation factor | fHC | 1 |
| Calculation factor | e | 0.68 |
| Calculation factor (single, tandem) | Y2 | 0.87 |
| Calculation factor (single, tandem) | Y0 | 0.38 |
| Calculation factor (single, tandem) | X2 | 0.41 |
| Calculation factor (back-to-back, face-to-face) | Y1 | 0.92 |
| Calculation factor (back-to-back, face-to-face) | Y2 | 1.41 |
| Calculation factor (back-to-back, face-to-face) | Y0 | 0.76 |
| Calculation factor (back-to-back, face-to-face) | X2 | 0.67 |
MASS
| Mass bearing | 0.075 kg |
|---|