4CR445 KOYO Four-row cylindrical roller bearings
| Brand Name: | KOYO |
| Model Number: | 4CR445 |
| Series: | 29000 |
| Cone Part Number: | 29168 |
| Cup Part Number: | 29334 |
| Design Units: | Imperial |
| Bearing Weight: | 0.5 Kg |
| Cage Type: | Stamped Steel |
| d: | 42.863 mm |
| D: | 84.988 mm |
| PDF |
4CR445 |
Product Details
| Series | 29000 |
| Cone Part Number | 29168 |
| Cup Part Number | 29334 |
| Design Units | Imperial |
| Bearing Weight | 0.5 Kg |
| Cage Type | Stamped Steel |
| d | 42.863 mm |
| D | 84.988 mm |
| B - Cone Width | 19.164 mm |
| C - Cup Width | 15.875 mm |
| B | 18.999 mm |
| R - Cone Backface To Clear Radius1 | 1.520 mm |
| r - Cup Backface To Clear Radius2 | 1.52 mm |
| da - Cone Frontface Backing Diameter | 49.02 mm |
| db - Cone Backface Backing Diameter | 51.05 mm |
| Da - Cup Frontface Backing Diameter | 78.00 mm |
| Db - Cup Backface Backing Diameter | 73.91 mm |
| Ab - Cage-Cone Frontface Clearance | 2.3 mm |
| Aa - Cage-Cone Backface Clearance | 0.3 mm |
| a - Effective Center Location3 | -1.3 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 | 15600 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 2770 lbf |
| K - Factor7 | 1.31 |
| e - ISO Factor8 | 0.44 |
| Y - ISO Factor9 | 1.35 |
| G1 - Heat Generation Factor (Roller-Raceway) | 23.8 |
| G2 - Heat Generation Factor (Rib-Roller End) | 15.3 |
| Cg - Geometry Factor | 0.0766 |
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