HM252342D/HM25231 NSK Double Row Double Row Bearings
| Brand Name: | NSK |
| Model Number: | HM252342D/HM25231 |
| Series: | 28000 |
| Cone Part Number: | 28159 |
| Cup Part Number: | 28300X |
| Design Units: | Imperial |
| Bearing Weight: | 0.4 Kg |
| Cage Type: | Stamped Steel |
| d: | 39.980 mm |
| D: | 76.2 mm |
Product Details
| Series | 28000 |
| Cone Part Number | 28159 |
| Cup Part Number | 28300X |
| Design Units | Imperial |
| Bearing Weight | 0.4 Kg |
| Cage Type | Stamped Steel |
| d | 39.980 mm |
| D | 76.2 mm |
| B - Cone Width | 20.940 mm |
| C - Cup Width | 15.494 mm |
| B | 20.622 mm |
| R - Cone Backface To Clear Radius1 | 3.560 mm |
| r - Cup Backface To Clear Radius2 | 1.52 mm |
| da - Cone Frontface Backing Diameter | 44.96 mm |
| db - Cone Backface Backing Diameter | 52.07 mm |
| Da - Cup Frontface Backing Diameter | 71.88 mm |
| Db - Cup Backface Backing Diameter | 68.07 mm |
| Ab - Cage-Cone Frontface Clearance | 1.8 mm |
| Aa - Cage-Cone Backface Clearance | 1.5 mm |
| a - Effective Center Location3 | -4.8 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 3700 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 14300 lbf |
| C0 - Static Radial Rating | 15500 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 2550 lbf |
| K - Factor7 | 1.45 |
| e - ISO Factor8 | 0.4 |
| Y - ISO Factor9 | 1.49 |
| G1 - Heat Generation Factor (Roller-Raceway) | 20.7 |
| G2 - Heat Generation Factor (Rib-Roller End) | 12.5 |
| Cg - Geometry Factor | 0.0709 |
