SKF
SKF 71905 CE/P4A Angular Contact Ball Bearing
Product Code:71905 CE/P4A
Description
Technical specification MetricImperial DIMENSIONS d 25 mmD 42 mmB 9 mmd1 30.7 mmd2 29.4 mmD1 36.39 mmr1,2min. 0.3 mmr3,4min. 0.15 mma 9.2 mm ABUTMENT DIMENSIONS damin. 27 mmdbmin. 27 mmDamax. 40 mmDbmax. 41.2 mmramax. 0.3 mmrbmax. 0.15 mmdn 31.8 mm CALCULATION DATA Basic dynamic load ratingC 5.27 kNBasic static load ratingC0 2.85 kNFatigue load limitPu 0.12 kNAttainable speed for grease lubrication 49000 r/minAttainable speed for oil-air lubrication 75000 r/minContact angle? 15 °Ball diameterDw 4.762 mmNumber of ballsz 16Reference grease quantityGref 0.6 cm³PRELOAD AND STIFFNESS (BACK-TO-BACK, FACE-TO-FACE)Preload class AGA 28 NStatic axial stiffness, preload class A 20 N/µmPreload class BGB 85 NStatic axial stiffness, preload class B 32 N/µmPreload class CGC 170 NStatic axial stiffness, preload class C 44 N/µmCALCULATION FACTORSCalculation factorf 1.06Calculation factorf1 1Calculation factorf2A 1Calculation factorf2B 1.04Calculation factorf2C 1.08Calculation factorfHC 1Calculation factorf0 8.1 MASS Mass bearing 0.04 kg
Technical Specifications
Technical specification 
DIMENSIONS
| d | 25 mm | |
|---|---|---|
| D | 42 mm | |
| B | 9 mm | |
| d1 | 30.7 mm | |
| d2 | 29.4 mm | |
| D1 | 36.39 mm | |
| r1,2 | min. 0.3 mm | |
| r3,4 | min. 0.15 mm | |
| a | 9.2 mm |
ABUTMENT DIMENSIONS
| da | min. 27 mm | |
|---|---|---|
| db | min. 27 mm | |
| Da | max. 40 mm | |
| Db | max. 41.2 mm | |
| ra | max. 0.3 mm | |
| rb | max. 0.15 mm | |
| dn | 31.8 mm |
CALCULATION DATA
| Basic dynamic load rating | C | 5.27 kN |
|---|---|---|
| Basic static load rating | C0 | 2.85 kN |
| Fatigue load limit | Pu | 0.12 kN |
| Attainable speed for grease lubrication | 49000 r/min | |
| Attainable speed for oil-air lubrication | 75000 r/min | |
| Contact angle | ? | 15 ° |
| Ball diameter | Dw | 4.762 mm |
| Number of balls | z | 16 |
| Reference grease quantity | Gref | 0.6 cm³ |
| Preload class A | GA | 28 N |
|---|---|---|
| Static axial stiffness, preload class A | 20 N/µm | |
| Preload class B | GB | 85 N |
| Static axial stiffness, preload class B | 32 N/µm | |
| Preload class C | GC | 170 N |
| Static axial stiffness, preload class C | 44 N/µm |
| Calculation factor | f | 1.06 |
|---|---|---|
| Calculation factor | f1 | 1 |
| Calculation factor | f2A | 1 |
| Calculation factor | f2B | 1.04 |
| Calculation factor | f2C | 1.08 |
| Calculation factor | fHC | 1 |
| Calculation factor | f0 | 8.1 |
MASS
| Mass bearing | 0.04 kg |
|---|