7238B KOYO Single-row, matched pair angular contact ball bearings
| Brand Name: | KOYO |
| Model Number: | 7238B |
| Series: | 290000 |
| Cone Part Number: | EE291175 |
| Cup Part Number: | 291750 |
| Design Units: | Imperial |
| Bearing Weight: | 29.50 Kg |
| Cage Type: | Stamped Steel |
| d: | 298.450 mm |
| D: | 444.5 mm |
| PDF |
7238B |
Product Details
| Series | 290000 |
| Cone Part Number | EE291175 |
| Cup Part Number | 291750 |
| Design Units | Imperial |
| Bearing Weight | 29.50 Kg |
| Cage Type | Stamped Steel |
| d | 298.450 mm |
| D | 444.5 mm |
| B - Cone Width | 61.913 mm |
| C - Cup Width | 39.688 mm |
| B | 63.5 mm |
| R - Cone Backface To Clear Radius1 | 7.870 mm |
| r - Cup Backface To Clear Radius2 | 1.52 mm |
| da - Cone Frontface Backing Diameter | 320.04 mm |
| db - Cone Backface Backing Diameter | 331.98 mm |
| Da - Cup Frontface Backing Diameter | 422.40 mm |
| Db - Cup Backface Backing Diameter | 416.05 mm |
| Ab - Cage-Cone Frontface Clearance | 8.6 mm |
| Aa - Cage-Cone Backface Clearance | 10.2 mm |
| a - Effective Center Location3 | 7.6 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 51700 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 199000 lbf |
| C0 - Static Radial Rating | 312000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 33400 lbf |
| K - Factor7 | 1.55 |
| e - ISO Factor8 | 0.38 |
| Y - ISO Factor9 | 1.59 |
| G1 - Heat Generation Factor (Roller-Raceway) | 1580 |
| G2 - Heat Generation Factor (Rib-Roller End) | 245 |
| Cg - Geometry Factor | 0.156 |
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