KOYO NJ308R cylindrical roller bearings
Manufacturers of all are represented in our partial 655 Series list of clients. Contact Gary for a complete KOYO NJ308R cylindrical roller bearings list of clients and projects.
| Series | 655 |
| Cone Part Number | 655 |
| Cup Part Number | 652-B |
| Design Units | Imperial |
| Bearing Weight | 8.2 lb |
| Cage Type | Stamped Steel |
| d | 2.7500 in |
| D | 6.0000 in |
| D1 – Flange Outer Diameter | 6.2772 in |
| B – Cone Width | 1.6250 in |
| C – Cup Width | 1.2500 in |
| C1 – Cup Flange Width | 0.2812 in |
| T1 – Bearing Width | 1.625 in |
| T – Bearing Width to Flange | 0.6562 in |
| R – Cone Backface To Clear Radius1 | 0.14 in |
| r – Cup Backface To Clear Radius2 | 0.130 in |
| da – Cone Frontface Backing Diameter | 3.23 in |
| db – Cone Backface Backing Diameter | 3.46 in |
| Da – Cup Frontface Backing Diameter | 5.57 in |
| Ab – Cage-Cone Frontface Clearance | 0.1 in |
| Aa – Cage-Cone Backface Clearance | 0.17 in |
| a – Effective Center Location3 | -0.31 in |
| C90 – Dynamic Radial Rating (90 million revolutions)4 | 14400 lbf |
| C1 – Dynamic Radial Rating (1 million revolutions)5 | 55500 lbf |
| C0 – Static Radial Rating | 75300 lbf |
| Ca90 – Dynamic Thrust Rating (90 million revolutions)6 | 10100 lbf |
| K – Factor7 | 1.43 |
| e – ISO Factor8 | 0.41 |
| Y – ISO Factor9 | 1.47 |
| G1 – Heat Generation Factor (Roller-Raceway)10 | 137 |
| G2 – Heat Generation Factor (Rib-Roller End) | 27.3 |
| Cg – Geometry Factor11 | 0.0919 |
Detailed Parameters
parameter：
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