SKF
SKF 7207 ACD/P4A Angular Contact Ball Bearing
Product Code:7207 ACD/P4A
Description
Technical specification MetricImperial DIMENSIONS d 35 mmD 72 mmB 17 mmd1 46.8 mmd2 46.8 mmD1 60.2 mmr1,2min. 1.1 mmr3,4min. 0.3 mma 21.1 mm ABUTMENT DIMENSIONS damin. 42 mmdbmin. 42 mmDamax. 65 mmDbmax. 69.6 mmramax. 1 mmrbmax. 0.3 mmdn 49.7 mm CALCULATION DATA Basic dynamic load ratingC 30.7 kNBasic static load ratingC0 20.8 kNFatigue load limitPu 0.88 kNAttainable speed for grease lubrication 18000 r/minAttainable speed for oil-air lubrication 30000 r/minContact angle? 25 °Ball diameterDw 11.112 mmNumber of ballsz 13Reference grease quantityGref 3.903 cm³PRELOAD AND STIFFNESS (BACK-TO-BACK, FACE-TO-FACE)Preload class AGA 190 NStatic axial stiffness, preload class A 119 N/µmPreload class BGB 380 NStatic axial stiffness, preload class B 154 N/µmPreload class CGC 760 NStatic axial stiffness, preload class C 204 N/µmPreload class DGD 1520 NStatic axial stiffness, preload class D 275 N/µmCALCULATION FACTORSCalculation factorf 1.05Calculation factorf1 0.99Calculation factorf2A 1Calculation factorf2B 1.01Calculation factorf2C 1.02Calculation factorf2D 1.05Calculation 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 0.28 kg
Technical Specifications
Technical specification 
DIMENSIONS
| d | 35 mm | |
|---|---|---|
| D | 72 mm | |
| B | 17 mm | |
| d1 | 46.8 mm | |
| d2 | 46.8 mm | |
| D1 | 60.2 mm | |
| r1,2 | min. 1.1 mm | |
| r3,4 | min. 0.3 mm | |
| a | 21.1 mm |
ABUTMENT DIMENSIONS
| da | min. 42 mm | |
|---|---|---|
| db | min. 42 mm | |
| Da | max. 65 mm | |
| Db | max. 69.6 mm | |
| ra | max. 1 mm | |
| rb | max. 0.3 mm | |
| dn | 49.7 mm |
CALCULATION DATA
| Basic dynamic load rating | C | 30.7 kN |
|---|---|---|
| Basic static load rating | C0 | 20.8 kN |
| Fatigue load limit | Pu | 0.88 kN |
| Attainable speed for grease lubrication | 18000 r/min | |
| Attainable speed for oil-air lubrication | 30000 r/min | |
| Contact angle | ? | 25 ° |
| Ball diameter | Dw | 11.112 mm |
| Number of balls | z | 13 |
| Reference grease quantity | Gref | 3.903 cm³ |
| Preload class A | GA | 190 N |
|---|---|---|
| Static axial stiffness, preload class A | 119 N/µm | |
| Preload class B | GB | 380 N |
| Static axial stiffness, preload class B | 154 N/µm | |
| Preload class C | GC | 760 N |
| Static axial stiffness, preload class C | 204 N/µm | |
| Preload class D | GD | 1520 N |
| Static axial stiffness, preload class D | 275 N/µm |
| Calculation factor | f | 1.05 |
|---|---|---|
| Calculation factor | f1 | 0.99 |
| Calculation factor | f2A | 1 |
| Calculation factor | f2B | 1.01 |
| Calculation factor | f2C | 1.02 |
| Calculation factor | f2D | 1.05 |
| 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 | 0.28 kg |
|---|