NNU49/56 KOYO Double-row cylindrical roller bearings
| Brand Name: | KOYO |
| Model Number: | NNU49/56 |
| Series: | 19000 |
| Cone Part Number: | 19150 |
| Cup Part Number: | 19283X |
| Design Units: | Imperial |
| Bearing Weight: | 0.30 Kg |
| Cage Type: | Stamped Steel |
| d: | 38.1 mm |
| D: | 71.999 mm |
Product Details
| Series | 19000 |
| Cone Part Number | 19150 |
| Cup Part Number | 19283X |
| Design Units | Imperial |
| Bearing Weight | 0.30 Kg |
| Cage Type | Stamped Steel |
| d | 38.1 mm |
| D | 71.999 mm |
| B - Cone Width | 16.520 mm |
| C - Cup Width | 14.288 mm |
| B | 17.021 mm |
| R - Cone Backface To Clear Radius1 | 1.520 mm |
| r - Cup Backface To Clear Radius2 | 2.03 mm |
| da - Cone Frontface Backing Diameter | 42.93 mm |
| db - Cone Backface Backing Diameter | 44.96 mm |
| Da - Cup Frontface Backing Diameter | 66.50 mm |
| Db - Cup Backface Backing Diameter | 61.98 mm |
| Ab - Cage-Cone Frontface Clearance | 2.3 mm |
| Aa - Cage-Cone Backface Clearance | 0.8 mm |
| a - Effective Center Location3 | -1.5 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 2960 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 11400 lbf |
| C0 - Static Radial Rating | 13000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 2250 lbf |
| K - Factor7 | 1.31 |
| e - ISO Factor8 | 0.44 |
| Y - ISO Factor9 | 1.35 |
| G1 - Heat Generation Factor (Roller-Raceway) | 17.5 |
| G2 - Heat Generation Factor (Rib-Roller End) | 11.5 |
| Cg - Geometry Factor | 0.0694 |
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