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Technical Specification 
The LM603049/LM603011 tapered roller bearing is an inch-series model designed for automotive hubs, trailers, and industrial equipment. It supports heavy combined loads with precision and efficiency. Made from high-quality alloy steel and heat-treated for superior durability, it ensures long service life and resistance to wear. The bearing’s cone and cup are separable, simplifying replacement and inspection. With DSBR’s strict production quality standards, this bearing delivers OEM-grade reliability, meeting the needs of both global distributors and aftermarket customers.
Technical Specification 
| Specifications | |
| Series | LM603000 |
| Cone Part Number | LM603049 |
| Cup Part Number | LM603011 |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| Related Assembly Number(s) | LM603049-90011 |
| Dimensions | |
| d - Bore | 1.7812 in 45.242 mm |
| D - Cup Outer Diameter | 3.0625 in 77.788 mm |
| B - Cone Width | 0.7812 in 19.842 mm |
| C - Cup Width | 0.5937 in 15.080 mm |
| T - Bearing Width | 0.7812 in 19.842 mm |
| Abutment and Fillet Dimensions | |
| R - Cone Backface "To Clear" Radius1 | 0.14 in 3.560 mm |
| r - Cup Backface "To Clear" Radius2 | 0.030 in 0.76 mm |
| da - Cone Frontface Backing Diameter | 2.05 in 52 mm |
| db - Cone Backface Backing Diameter | 2.28 in 58 mm |
| Da - Cup Frontface Backing Diameter | 2.94 in 74.68 mm |
| Db - Cup Backface Backing Diameter | 2.8 in 71.12 mm |
| Ab - Cage-Cone Frontface Clearance | 0.08 in 2 mm |
| Aa - Cage-Cone Backface Clearance | 0.03 in 0.8 mm |
| a - Effective Center Location3 | -0.09 in -2.3 mm |
| Basic Load Ratings | |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 4450 lbf 19800 N |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 17200 lbf 76300 N |
| C0 - Static Radial Rating | 17500 lbf 77900 N |
| Ca90- Dynamic Thrust Rating (90 million revolutions)6 | 3250 lbf 14500 N |
| Factors | |
| K - Factor7 | 1.37 |
| e - ISO Factor8 | 0.43 |
| Y - ISO Factor9 | 1.41 |
| G1 - Heat Generation Factor (Roller-Raceway) | 26.4 |
| G2 - Heat Generation Factor (Rib-Roller End) | 14.4 |
| Cg - Geometry Factor10 | 0.0785 |
