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Technical Specification 
The DSBR 498/492A tapered roller bearing is an inch-series bearing designed for versatility and heavy-load operation. Made with advanced bearing steel and strict heat treatment processes, it offers exceptional resistance to wear, accurate fitment, and smooth rotation. This bearing is extensively used in agricultural machinery, trucks, trailers, and industrial gearboxes. DSBR’s expertise in bearing manufacturing ensures every unit meets or exceeds international standards. With precision grinding, optimized internal geometry, and robust packaging solutions, DSBR provides a high-value product that minimizes downtime and maximizes equipment efficiency.
Technical Specification 
| Specifications | |
| Series | 495 |
| Cone Part Number | 498 |
| Cup Part Number | 492A |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| Dimensions | |
| d - Bore | 3.3125 in 84.138 mm |
| D - Cup Outer Diameter | 5 1/4 in 133.350 mm |
| B - Cone Width | 1.1720 in 29.769 mm |
| C - Cup Width | 0.8750 in 22.225 mm |
| T - Bearing Width | 1.1875 in 30.163 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 | 3.58 in 91 mm |
| db - Cone Backface Backing Diameter | 3.86 in 98 mm |
| Da - Cup Frontface Backing Diameter | 5.08 in 129.00 mm |
| Db - Cup Backface Backing Diameter | 4.72 in 119.89 mm |
| Ab - Cage-Cone Frontface Clearance | 0.12 in 3 mm |
| Aa - Cage-Cone Backface Clearance | 0.07 in 1.8 mm |
| a - Effective Center Location3 | -0.03 in -0.8 mm |
| Basic Load Ratings | |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 9000 lbf 40000 N |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 34700 lbf 154000 N |
| C0 - Static Radial Rating | 48600 lbf 216000 N |
| Ca90- Dynamic Thrust Rating (90 million revolutions)6 | 6850 lbf 30500 N |
| Factors | |
| K - Factor7 | 1.31 |
| e - ISO Factor8 | 0.44 |
| Y - ISO Factor9 | 1.35 |
| G1 - Heat Generation Factor (Roller-Raceway) | 104.6 |
| G2 - Heat Generation Factor (Rib-Roller End) | 29.3 |
| Cg - Geometry Factor10 | 0.125 |
