NTN NK80/25R needle roller bearings
Request 8520 Cup Part Number A Quote For Your Special NTN NK80/25R needle roller bearings 8575 Cone Part Number Needs Today! Free 8500 Series Quotes. ISO 9001 certified.
| Series | 8500 |
| Cone Part Number | 8575 |
| Cup Part Number | 8520 |
| Design Units | Imperial |
| Bearing Weight | 12.3 Kg |
| Cage Type | Stamped Steel |
| d | 234.95 mm |
| D | 327.025 mm |
| B – Cone Width | 52.388 mm |
| C – Cup Width | 36.513 mm |
| B | 52.388 mm |
| R – Cone Backface To Clear Radius1 | 6.35 mm |
| r – Cup Backface To Clear Radius2 | 3.30 mm |
| da – Cone Frontface Backing Diameter | 247.90 mm |
| db – Cone Backface Backing Diameter | 259.08 mm |
| Da – Cup Frontface Backing Diameter | 314.96 mm |
| Db – Cup Backface Backing Diameter | 305.05 mm |
| Ab – Cage-Cone Frontface Clearance | 3.3 mm |
| Aa – Cage-Cone Backface Clearance | 6.1 mm |
| a – Effective Center Location3 | 7.6 mm |
| C90 – Dynamic Radial Rating (90 million revolutions)4 | 32500 lbf |
| C1 – Dynamic Radial Rating (1 million revolutions)5 | 126000 lbf |
| C0 – Static Radial Rating | 240000 lbf |
| Ca90 – Dynamic Thrust Rating (90 million revolutions)6 | 22700 lbf |
| K – Factor7 | 1.44 |
| e – ISO Factor8 | 0.41 |
| Y – ISO Factor9 | 1.48 |
| G1 – Heat Generation Factor (Roller-Raceway) | 1050 |
| G2 – Heat Generation Factor (Rib-Roller End) | 172 |
| Cg – Geometry Factor | 0.14 |
Detailed Parameters
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