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Technical Specification 
The DSBR JM720249/JM720210 tapered roller bearing is a high-precision component designed for demanding heavy-duty applications. With a durable steel construction and optimized roller geometry, this inch-series bearing offers low friction, high load capacity, and long-lasting performance. Commonly applied in trucks, trailers, and construction machinery, it delivers reliability in challenging environments. DSBR’s advanced production lines and strict ISO 9001 & IATF16949 quality systems ensure superior product consistency, making this bearing a preferred choice for OEM customers and distributors.
Technical Specification 
| Technical Specifications | |
| Type | Tapered Roller Bearing |
| Bore Type | Round |
| Material | Case Carburized Steel |
| Style | Cone & Cup |
| Precision Rating | Class N |
| Cone Number | JM720249 |
| Cup Number | JM720210 |
| Configuration | One |
| Lubrication | w/o Oil Hole |
| e (Axial Load Factor) | 0.47 |
| Y2 (Axial Load Factor) | 1.27 |
| Static Load Rating | 78500 lbf 350000 N 350.00 kN |
| Dynamic Load Rating | 47000 lbf 209000 N 209.00 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 ºF -40 to 120 ºC |
| Dimensional Specifications | |
| B | 3.9370 in 100.000 mm |
| D | 6.1024 in 155.000 mm |
| Wo | 1.1024 in 28.000 mm |
| Wi | 1.3780 in 35.000 mm |
| W | 1.4173 in 36.000 mm |
| r | 0.1000 in 2.500 mm |
| R | 0.12 in 3.0 mm |
| a (Effective Load Center) | 0.0100 in 0.300 mm |
| U | 4.53 in 115.0 mm |
| V | 4.29 in 109.0 mm |
| X | 5.87 in 149.0 mm |
| Z | 5.51 in 140.0 mm |
