Technical Specification
The HM807044/HM807010 tapered roller bearing is a heavy-duty inch-series model designed for trucks, trailers, and construction equipment. It is capable of carrying large axial and radial loads, ensuring operational stability even under tough working conditions. Constructed with premium steel and advanced machining, this bearing achieves high precision and long service life. Its cone and cup are separable, simplifying installation and maintenance. DSBR ensures every bearing meets strict quality standards, offering reliable performance for both OEM production and aftermarket distribution.
Technical Specification 
| Specifications | |
| Series | HM807000 |
| Cone Part Number | HM807044 |
| Cup Part Number | HM807010 |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| Dimensions | |
| d - Bore | 1 15/16 in 49.213 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 mm |
| db - Cone Backface Backing Diameter | 2.72 in 69 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 |
| Cg - Geometry Factor10 | 0.076 |
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