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Technical Specification 
The DSBR HM807046/HM807010 tapered roller bearing is engineered for demanding heavy-duty applications, providing exceptional load-carrying capacity and durability. Designed for use in truck axles, trailers, construction machinery, and large industrial gearboxes, this inch-series bearing delivers high performance in harsh conditions. Manufactured with premium alloy steel and precision-ground raceways, it ensures smooth operation, reduced friction, and extended service life. Its separable cone and cup design simplifies installation and maintenance, lowering downtime and operational costs. DSBR’s factory-direct manufacturing, strict quality management system, and advanced production technology guarantee OEM-grade reliability and performance for global distributors and equipment manufacturers.
Technical Specification 
| Specifications | |
| Series | HM807000 |
| Cone Part Number | HM807046 |
| Cup Part Number | HM807010 |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| Related Assembly Number(s) | HM807046-902A3 HM807046-90499 HM807046-90701 HM807046-90796 |
| Dimensions | |
| d - Bore | 2 in 50.80 mm |
| D - Cup Outer Diameter | 4.1250 in 104.775 mm |
| B - Cone Width | 1.4375 in 36.513 mm |
| C - Cup Width | 1.1250 in 28.575 mm |
| T - Bearing Width | 1.4375 in 36.513 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 | 2.48 in 63.1 mm |
| db - Cone Backface Backing Diameter | 2.76 in 70 mm |
| Da - Cup Frontface Backing Diameter | 3.96 in 100.10 mm |
| Db - Cup Backface Backing Diameter | 3.50 in 88.90 mm |
| Ab - Cage-Cone Frontface Clearance | 0.1 in 2.5 mm |
| Aa - Cage-Cone Backface Clearance | 0.12 in 3 mm |
| a - Effective Center Location3 | -0.29 in -7.4 mm |
| Basic Load Ratings | |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 11900 lbf 52700 N |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 45700 lbf 203000 N |
| C0 - Static Radial Rating | 50200 lbf 223000 N |
| Ca90- Dynamic Thrust Rating (90 million revolutions)6 | 9890 lbf 44000 N |
| Factors | |
| K - Factor7 | 1.2 |
| e - ISO Factor8 | 0.49 |
| Y - ISO Factor9 | 1.23 |
| G1 - Heat Generation Factor (Roller-Raceway) | 63.9 |
| G2 - Heat Generation Factor (Rib-Roller End) | 17.1 |
| Cg - Geometry Factor10 | 0.076 |
