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Technical Specification 
The 25590/25523 tapered roller bearing is a high-quality inch-series bearing suitable for automotive wheel hubs, trailers, and agricultural equipment. Its robust design handles combined radial and axial loads effectively. Constructed from premium alloy steel and treated with advanced heat processes, it delivers superior wear resistance and reliability. Precision-ground raceways ensure smooth operation and reduce energy loss. With DSBR’s advanced production facilities and strict quality standards, this model guarantees long-term performance and consistent reliability for global OEMs and aftermarket users.
Technical Specification 
| Specifications | |
| Series | 25500 |
| Cone Part Number | 25590 |
| Cup Part Number | 25523 |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| Dimensions | |
| d - Bore | 1.7960 in 45.618 mm |
| D - Cup Outer Diameter | 3.2650 in 82.931 mm |
| B - Cone Width | 1.0000 in 25.400 mm |
| C - Cup Width | 0.8750 in 22.225 mm |
| T - Bearing Width | 1.0625 in 26.988 mm |
| Abutment and Fillet Dimensions | |
| R - Cone Backface "To Clear" Radius1 | 0.14 in 3.600 mm |
| r - Cup Backface "To Clear" Radius2 | 0.090 in 2.29 mm |
| da - Cone Frontface Backing Diameter | 2.01 in 51 mm |
| db - Cone Backface Backing Diameter | 2.28 in 58 mm |
| Da - Cup Frontface Backing Diameter | 3.05 in 77.00 mm |
| Db - Cup Backface Backing Diameter | 2.83 in 71.88 mm |
| Ab - Cage-Cone Frontface Clearance | 0.06 in 1.5 mm |
| Aa - Cage-Cone Backface Clearance | 0.01 in 0.3 mm |
| a - Effective Center Location3 | -0.25 in -6.4 mm |
| Basic Load Ratings | |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 5270 lbf 23500 N |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 20300 lbf 90500 N |
| C0 - Static Radial Rating | 24900 lbf 111000 N |
| Ca90- Dynamic Thrust Rating (90 million revolutions)6 | 3020 lbf 13500 N |
| Factors | |
| K - Factor7 | 1.74 |
| e - ISO Factor8 | 0.33 |
| Y - ISO Factor9 | 1.79 |
| G1 - Heat Generation Factor (Roller-Raceway) | 35.2 |
| G2 - Heat Generation Factor (Rib-Roller End) | 14.3 |
| Cg - Geometry Factor10 | 0.0801 |
