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Technical Specification 
The HM212049/10 tapered roller bearing is part of DSBR’s premium inch-series line, designed for high-load applications. Built with top-grade bearing steel and precision heat treatment, this bearing offers excellent resistance to wear, ensuring a long service life. Its separable design simplifies installation and inspection, reducing maintenance efforts. Ideal for use in trucks, trailers, and heavy industrial machinery, this model provides exceptional load-carrying capabilities and smooth performance. DSBR’s advanced production facilities, strict quality control systems, and global logistics network ensure reliable delivery and cost-effective solutions for OEMs and aftermarket customers.
Technical Specification 
| Specifications | |
| Series | HM212000 |
| Cone Part Number | HM212049 |
| Cup Part Number | HM212011 |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| Dimensions | |
| d - Bore | 2.6250 in 66.675 mm |
| D - Cup Outer Diameter | 4 13/16 in 122.238 mm |
| B - Cone Width | 1.5100 in 38.354 mm |
| C - Cup Width | 1.1700 in 29.718 mm |
| T - Bearing Width | 1.5000 in 38.100 mm |
| Abutment and Fillet Dimensions | |
| R - Cone Backface "To Clear" Radius1 | 0.14 in 3.560 mm |
| r - Cup Backface "To Clear" Radius2 | 0.130 in 3.30 mm |
| da - Cone Frontface Backing Diameter | 2.97 in 75.5 mm |
| db - Cone Backface Backing Diameter | 3.23 in 82 mm |
| Da - Cup Frontface Backing Diameter | 4.60 in 116.10 mm |
| Db - Cup Backface Backing Diameter | 4.25 in 107.95 mm |
| Ab - Cage-Cone Frontface Clearance | 0.15 in 3.8 mm |
| Aa - Cage-Cone Backface Clearance | 0.07 in 1.8 mm |
| a - Effective Center Location3 | -0.43 in -10.9 mm |
| Basic Load Ratings | |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 15600 lbf 69200 N |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 60000 lbf 267000 N |
| C0 - Static Radial Rating | 62700 lbf 279000 N |
| Ca90- Dynamic Thrust Rating (90 million revolutions)6 | 8990 lbf 40000 N |
| Factors | |
| K - Factor7 | 1.73 |
| e - ISO Factor8 | 0.34 |
| Y - ISO Factor9 | 1.78 |
| G1 - Heat Generation Factor (Roller-Raceway) | 92.2 |
| G2 - Heat Generation Factor (Rib-Roller End) | 18.1 |
| Cg - Geometry Factor10 | 0.0759 |
