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- TIMKEN 15578-15523 tapered roller bearings
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Description
Inside Diameter: 25.4 mm
Outside Diameter: 60.325 mm
Width: 19.842 mm
Basic dynamic load rating: 54.5 kN
Basic static load rating: 50.1 kN

| model | 15578-15523 |
|---|---|
| Cone Part Number | 15578 |
| Cup Part Number | 15523 |
| Design Units | Imperial |
| Cage Type | Stamped Steel |
| Bearing Weight |
0.300 Kg 0.60 lb |
| Dimensions | |
| d - Bore |
25.400 mm 1.0000 in |
| D - Cup Outer Diameter |
60.325 mm 2.3750 in |
| B - Cone Width |
17.463 mm 0.6875 in |
| C - Cup Width |
15.875 mm 0.6250 in |
| T - Bearing Width |
19.842 mm 0.7812 in |
| Abutment and Fillet Dimensions | |
| R - Cone Backface "To Clear" Radius |
1.270 mm 0.050 in |
| r - Cup Backface "To Clear" Radius |
1.52 mm 0.06 in |
| da - Cone Frontface Backing Diameter |
30.48 mm 1.20 in |
| db - Cone Backface Backing Diameter |
32.51 mm 1.28 in |
| Da - Cup Frontface Backing Diameter |
55.10 mm 2.17 in |
| Db - Cup Backface Backing Diameter |
51.05 mm 2.01 in |
| Ab - Cage-Cone Frontface Clearance |
2.5 mm 0.1 in |
| Aa - Cage-Cone Backface Clearance |
0 mm 0 in |
| a - Effective Center Location |
-5.10 mm -0.20 in |
| Basic Load Ratings | |
| C90 - Dynamic Radial Rating (90 million revolutions) |
14100 N 3180 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions) |
54500 N 12300 lbf |
| C0 - Static Radial Rating |
50100 N 11300 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions) |
8380 N 1880 lbf |
| Factors | |
| K - Factor | 1.69 |
| e - ISO Factor | 0.35 |
| Y - ISO Factor | 1.73 |
| G1 - Heat Generation Factor (Roller-Raceway) | 12.7 |
| G2 - Heat Generation Factor (Rib-Roller End) | 10.3 |
| Cg - Geometry Factor | 0.0577 |




















