4CR445 KOYO Four-row cylindrical roller bearings
| Brand Name: | KOYO |
| Model Number: | 4CR445 |
| Series: | 9200 |
| Cone Part Number: | 9285 |
| Cup Part Number: | 9221-B |
| Design Units: | Imperial |
| Bearing Weight: | 9.4 lb |
| Cage Type: | Stamped Steel |
| d: | 3 in |
| D: | 6.3750 in |
| PDF |
4CR445 |
Product Details
| Series | 9200 |
| Cone Part Number | 9285 |
| Cup Part Number | 9221-B |
| Design Units | Imperial |
| Bearing Weight | 9.4 lb |
| Cage Type | Stamped Steel |
| d | 3 in |
| D | 6.3750 in |
| D1 - Flange Outer Diameter | 6.7500 in |
| B - Cone Width | 1.8125 in |
| C - Cup Width | 1.1875 in |
| C1 - Cup Flange Width | 0.2810 in |
| T1 - Bearing Width | 1.8750 in |
| T - Bearing Width to Flange | 0.9685 in |
| R - Cone Backface To Clear Radius1 | 0.14 in |
| r - Cup Backface To Clear Radius2 | 0.130 in |
| da - Cone Frontface Backing Diameter | 3.5 in |
| db - Cone Backface Backing Diameter | 4.37 in |
| Da - Cup Frontface Backing Diameter | 6.04 in |
| Ab - Cage-Cone Frontface Clearance | 0.18 in |
| Aa - Cage-Cone Backface Clearance | 0.33 in |
| a - Effective Center Location3 | 0 in |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 20600 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 79300 lbf |
| C0 - Static Radial Rating | 74200 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 24900 lbf |
| K - Factor7 | 0.82 |
| e - ISO Factor8 | 0.71 |
| Y - ISO Factor9 | 0.85 |
| G1 - Heat Generation Factor (Roller-Raceway)10 | 102 |
| G2 - Heat Generation Factor (Rib-Roller End) | 18.4 |
| Cg - Geometry Factor11 | 0.0984 |
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