63,5 mm x 140,03 mm x 65,989 mm Timken 78251D/78551+Y1S-78551 tapered roller bearings
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What is 78251D/78551+Y1S-78551 bearing interchange？
| Brand Name: | Timken |
| Model Number: | 78251D/78551+Y1S-78551 |
| Series: | 775 |
| Cone Part Number: | 777 |
| Design Units: | Imperial |
| Cage Type: | Stamped Steel |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1: | 135000 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2: | 35100 lbf |
| d: | 3.7500 in |
| B - Cone Width: | 1.8900 in |
| PDF |
78251D/78551+Y1S-78551 |
Product Details
| Series | 775 |
| Cone Part Number | 777 |
| Design Units | Imperial |
| Cage Type | Stamped Steel |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 | 135000 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 | 35100 lbf |
| d | 3.7500 in |
| B - Cone Width | 1.8900 in |
| R - Cone Backface To Clear Radius3 | 0.380 in |
| da - Cone Frontface Backing Diameter | 4.21 in |
| db - Cone Backface Backing Diameter | 4.96 in |
| Ab - Cage-Cone Frontface Clearance | 0.07 in |
| Aa - Cage-Cone Backface Clearance | 0.13 in |
| a - Effective Center Location4 | -0.32 in |
| C90 - Dynamic Radial Rating (90 million revolutions)5 | 20200 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)6 | 77800 lbf |
| C0 - Static Radial Rating | 111000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)7 | 13300 lbf |
| K - Factor8 | 1.51 |
| G1 - Heat Generation Factor (Roller-Raceway) | 227.3 |
| G2 - Heat Generation Factor (Rib-Roller End) | 41.3 |
| Cg - Geometry Factor | 0.107 |
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