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Technical Specification 
The LM603049/LM603012 tapered roller bearing is an inch-series precision component designed for demanding automotive and industrial applications. With strong support for combined axial and radial loads, it ensures efficient power transmission and stability. Manufactured from premium bearing steel, it is heat-treated for high strength, wear resistance, and extended service life. Its separable cone and cup structure simplifies installation, inspection, and replacement. DSBR’s advanced production process and strict quality inspection guarantee consistency and reliability, making this bearing an excellent choice for OEM and aftermarket requirements worldwide.
Technical Specification 
| Specifications | |
| Series | LM603000 |
| Cone Part Number | LM603049 |
| Cup Part Number | LM603012 |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| 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 | 0.6562 in 16.667 mm |
| T - Bearing Width | 0.8437 in 21.430 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 | 2.76 in 70.10 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 |
