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Technical Specification 
The DSBR 685/672 tapered roller bearing is designed to meet the demands of high-load, high-performance applications. Built from premium bearing steel, this inch-series bearing ensures strength, precision, and reliability under heavy axial and radial loads. Widely used in heavy trucks, trailers, agricultural equipment, and mining machinery, it offers optimized geometry and heat-treated raceways to reduce wear and extend service life. DSBR provides advanced packaging, competitive pricing, and ISO-certified manufacturing standards, making this bearing a trusted choice for OEM and aftermarket markets worldwide.
Technical Specification 
| Specifications | |
| Series | 675 |
| Cone Part Number | 685 |
| Cup Part Number | 672 |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| Related Assembly Number(s) | 685-90045 |
| Dimensions | |
| d - Bore | 3.8750 in 98.425 mm |
| D - Cup Outer Diameter | 6.6250 in 168.275 mm |
| B - Cone Width | 1.625 in 41.275 mm |
| C - Cup Width | 1.1875 in 30.163 mm |
| T - Bearing Width | 1.6250 in 41.275 mm |
| Abutment and Fillet Dimensions | |
| R - Cone Backface "To Clear" Radius1 | 0.14 in 3.600 mm |
| r - Cup Backface "To Clear" Radius2 | 0.130 in 3.30 mm |
| da - Cone Frontface Backing Diameter | 4.29 in 109 mm |
| db - Cone Backface Backing Diameter | 4.57 in 116 mm |
| Da - Cup Frontface Backing Diameter | 6.34 in 161.00 mm |
| Db - Cup Backface Backing Diameter | 5.87 in 149.10 mm |
| Ab - Cage-Cone Frontface Clearance | 0.12 in 3 mm |
| Aa - Cage-Cone Backface Clearance | 0.17 in 4.3 mm |
| a - Effective Center Location3 | -0.11 in -2.8 mm |
| Basic Load Ratings | |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 15400 lbf 68600 N |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 59500 lbf 265000 N |
| C0 - Static Radial Rating | 86700 lbf 386000 N |
| Ca90- Dynamic Thrust Rating (90 million revolutions)6 | 12400 lbf 55300 N |
| Factors | |
| K - Factor7 | 1.24 |
| e - ISO Factor8 | 0.47 |
| Y - ISO Factor9 | 1.28 |
| G1 - Heat Generation Factor (Roller-Raceway) | 182.5 |
| G2 - Heat Generation Factor (Rib-Roller End) | 37.3 |
| Cg - Geometry Factor10 | 0.106 |
