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78251D
| Part Number | 78251D |
| System of Measurement | Inch |
| Type | Cones |
| Bearing Part Number | 78251D-78537 , 78251D-78551 , 78251D-78571 |
| Bearing Type | Roller |
| Roller Bearing Type | Tapered Roller |
| For Load Direction | Combined |
| Construction | Double Row |
| Seal Type | Open |
| Series | 78000 |
| Bore Dia | 2.5" |
| Bore Dia Tolerance | +0.005" to 0 |
| Double Cone Width | 2.598" |
| Double Cone Width Tolerance | +0.003" to -0.01 |
| Cone Backface ToClear Radius | 0.09" |
| Cone Frontface Backing Diameter | 3.11" |
| Cone Backface Backing Diameter | 3.11" |
| Cage Cone Frontface Clearance | 0.08" |
| Static Radial Load | 43400 lbf |
| Roller Material | Chrome Steel |
| Cage Material | Steel |
| Dynamic Radial Rating(90 Million Revolutions) | 9970 lbf |
| Dynamic Radial Rating(Two Row 1 Million Revolutions) | 66900 lbf |
| Dynamic Radial Rating(1 Million Revolutions) | 38400 lbf |
| Dynamic Thrust Rating(90 Million Revolutions) | 14800 lbf |
| Dynamic Radial Rating(Two Row 90 Million Revolutions) | 17400 lbf |
| Heat Generation Factor(Rib Roller End)(G2) | 19.1 |
| Heat Generation Factor(Roller Raceway)(G1) | 62.6 |
| Temperature Range | -30° to 110 °C |
| ABEC Rating | ABEC-1 |
| Radial Clearance | Standard (Available in C3/C4/C5) |
| RoHS | Compliant |
| REACH | Compliant |
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