68/56 KOYO Single-row deep groove ball bearings
| Brand Name: | KOYO |
| Model Number: | 68/56 |
| Series: | 375 |
| Cone Part Number: | 380 |
| Design Units: | Imperial |
| Cage Type: | Stamped Steel |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1: | 40800 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2: | 10600 lbf |
| d: | 2.0625 in |
| B - Cone Width: | 0.8281 in |
Product Details
| Series | 375 |
| Cone Part Number | 380 |
| Design Units | Imperial |
| Cage Type | Stamped Steel |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 | 40800 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 | 10600 lbf |
| d | 2.0625 in |
| B - Cone Width | 0.8281 in |
| R - Cone Backface To Clear Radius3 | 0.09 in |
| da - Cone Frontface Backing Diameter | 2.28 in |
| db - Cone Backface Backing Diameter | 2.44 in |
| Ab - Cage-Cone Frontface Clearance | 0.14 in |
| Aa - Cage-Cone Backface Clearance | 0.01 in |
| a - Effective Center Location4 | -0.15 in |
| C90 - Dynamic Radial Rating (90 million revolutions)5 | 6070 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)6 | 23400 lbf |
| C0 - Static Radial Rating | 22700 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)7 | 3520 lbf |
| K - Factor8 | 1.73 |
| G1 - Heat Generation Factor (Roller-Raceway) | 37.6 |
| G2 - Heat Generation Factor (Rib-Roller End) | 15.4 |
| Cg - Geometry Factor | 0.0816 |
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