SKF Bearing
NSK Bearing
FAG Bearing
TIMKEN Bearing
INA Bearing
NTN Bearing
KOYO Bearing
NACHI Bearing
Specifications
Series | A4000 |
Cone Part Number | A4049 |
Cup Part Number | A4138 |
Design Unit | Inch |
Bearing Weight | 0.1 lb0.1 Kg |
Cage Material | Stamped Steel |
Dimensions
d – Bore | 0.4992 in12.680 mm |
D – Cup Outer Diameter | 1.3775 in34.989 mm |
B – Cone Width | 0.4326 in10.988 mm |
C – Cup Width | 0.3437 in8.730 mm |
T – Bearing Width | 0.4330 in10.998 mm |
Abutment and Fillet Dimensions
| R – Cone Backface “To Clear” Radius1 | 0.03 in0.800 mm |
| r – Cup Backface “To Clear” Radius2 | 0.050 in1.27 mm |
da – Cone Frontface Backing Diameter | 0.69 in17.5 mm |
db – Cone Backface Backing Diameter | 0.69 in17.5 mm |
Da – Cup Frontface Backing Diameter | 1.28 in32.51 mm |
Db – Cup Backface Backing Diameter | 1.14 in28.96 mm |
Ab – Cage-Cone Frontface Clearance | 0.07 in1.8 mm |
Aa – Cage-Cone Backface Clearance | 0 in0 mm |
| a – Effective Center Location3 | -0.1 in-2.5 mm |
Basic Load Ratings
| C90 – Dynamic Radial Rating (90 million revolutions)4 | 767 lbf3410 N |
| C1 – Dynamic Radial Rating (1 million revolutions)5 | 2960 lbf13200 N |
C0 – Static Radial Rating | 2580 lbf11500 N |
| Ca90 – Dynamic Thrust Rating (90 million revolutions)6 | 594 lbf2640 N |
Factors
| K – Factor7 | 1.29 |
| e – ISO Factor8 | 0.45 |
| Y – ISO Factor9 | 1.32 |
G1 – Heat Generation Factor (Roller-Raceway) | 2.3 |
G2 – Heat Generation Factor (Rib-Roller End) | 4.12 |
| Cg – Geometry Factor10 | 0.0355 |
- 1 These maximum fillet radii will be cleared by the bearing corners.
- 2 These maximum fillet radii will be cleared by the bearing corners.
- 3 Negative value indicates effective center inside cone backface.
- 4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
- 5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
- 6 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
- 7 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
- 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
- 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
- 10 Geometry constant for Lubrication Life Adjustment Factor a3l.
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