78/5 KOYO Single-row, matched pair angular contact ball bearings
| Brand Name: | KOYO |
| Model Number: | 78/5 |
| Series: | M38500 |
| Cone Part Number: | M38549 |
| Cup Part Number: | M38514 |
| Design Units: | Imperial |
| Bearing Weight: | 0.30 Kg |
| Cage Type: | Stamped Steel |
| d: | 34.925 mm |
| D: | 68.263 mm |
Product Details
| Series | M38500 |
| Cone Part Number | M38549 |
| Cup Part Number | M38514 |
| Design Units | Imperial |
| Bearing Weight | 0.30 Kg |
| Cage Type | Stamped Steel |
| d | 34.925 mm |
| D | 68.263 mm |
| B - Cone Width | 20.638 mm |
| C - Cup Width | 16.670 mm |
| B | 20.638 mm |
| R - Cone Backface To Clear Radius1 | 3.560 mm |
| r - Cup Backface To Clear Radius2 | 2.29 mm |
| da - Cone Frontface Backing Diameter | 39.88 mm |
| db - Cone Backface Backing Diameter | 46.48 mm |
| Da - Cup Frontface Backing Diameter | 63.00 mm |
| Db - Cup Backface Backing Diameter | 58.93 mm |
| Ab - Cage-Cone Frontface Clearance | 3.3 mm |
| Aa - Cage-Cone Backface Clearance | -0.3 mm |
| a - Effective Center Location3 | -5.6 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 3640 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 14000 lbf |
| C0 - Static Radial Rating | 16400 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 2200 lbf |
| K - Factor7 | 1.66 |
| e - ISO Factor8 | 0.35 |
| Y - ISO Factor9 | 1.7 |
| G1 - Heat Generation Factor (Roller-Raceway) | 20.3 |
| G2 - Heat Generation Factor (Rib-Roller End) | 11.8 |
| Cg - Geometry Factor | 0.068 |
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