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Technical Specification 
The 18590/18520 tapered roller bearing is a robust inch-series bearing commonly used in trucks, agricultural machinery, and industrial equipment. It supports combined axial and radial loads efficiently, ensuring stable performance under continuous stress. Manufactured from high-grade steel, it provides high resistance to wear and fatigue. The cone and cup design simplifies servicing and reduces downtime, making it ideal for OEMs and aftermarket replacement. DSBR guarantees consistent quality through advanced production lines and strict inspections, offering reliable performance and competitive pricing for global markets.
Technical Specification 
| Specifications | |
| Series | 18500 |
| Cone Part Number | 18590 |
| Cup Part Number | 18520 |
| Design Unit | Inch |
| Cage Material | Stamped Steel |
| Related Assembly Number(s) | 18590-90010 |
| Dimensions | |
| d - Bore | 1 5/8 in 41.275 mm |
| D - Cup Outer Diameter | 2.8750 in 73.025 mm |
| B - Cone Width | 0.6875 in 17.463 mm |
| C - Cup Width | 0.5000 in 12.700 mm |
| T - Bearing Width | 0.6563 in 16.670 mm |
| Abutment and Fillet Dimensions | |
| R - Cone Backface "To Clear" Radius1 | 0.14 in 3.560 mm |
| r - Cup Backface "To Clear" Radius2 | 0.06 in 1.52 mm |
| da - Cone Frontface Backing Diameter | 1.81 in 46 mm |
| db - Cone Backface Backing Diameter | 2.09 in 53 mm |
| Da - Cup Frontface Backing Diameter | 2.74 in 69.10 mm |
| Db - Cup Backface Backing Diameter | 2.60 in 66.04 mm |
| Ab - Cage-Cone Frontface Clearance | 0.08 in 2 mm |
| Aa - Cage-Cone Backface Clearance | -0.01 in -0.3 mm |
| a - Effective Center Location3 | -0.11 in -2.8 mm |
| Basic Load Ratings | |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 2960 lbf 13200 N |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 11400 lbf 50800 N |
| C0 - Static Radial Rating | 13100 lbf 58100 N |
| Ca90- Dynamic Thrust Rating (90 million revolutions)6 | 1770 lbf 7890 N |
| Factors | |
| K - Factor7 | 1.67 |
| e - ISO Factor8 | 0.35 |
| Y - ISO Factor9 | 1.71 |
| G1 - Heat Generation Factor (Roller-Raceway) | 21 |
| G2 - Heat Generation Factor (Rib-Roller End) | 15.4 |
| Cg - Geometry Factor10 | 0.0681 |
_20250828093537.webp "14138A/14276 Inch Tapered Roller Bearings Provide Professional High-quality Bearings for Over 70 Countries")
