68FC45250BW KOYO Four-row cylindrical roller bearings
| Brand Name: |
KOYO |
| Model Number: |
68FC45250BW |
| Series: |
129000 |
| Cone Part Number: |
EE129120X |
| Cup Part Number: |
129174 |
| Design Units: |
Imperial |
| Bearing Weight: |
33.6 Kg |
| Cage Type: |
Stamped Steel |
| d: |
304.8 mm |
| D: |
439.948 mm |
| PDF |
68FC45250BW |
Product Details
| Series |
129000 |
| Cone Part Number |
EE129120X |
| Cup Part Number |
129174 |
| Design Units |
Imperial |
| Bearing Weight |
33.6 Kg |
| Cage Type |
Stamped Steel |
| d |
304.8 mm |
| D |
439.948 mm |
| B - Cone Width |
76.992 mm |
| C - Cup Width |
53.975 mm |
| B |
76.203 mm |
| R - Cone Backface To Clear Radius1 |
6.35 mm |
| r - Cup Backface To Clear Radius2 |
4.83 mm |
| da - Cone Frontface Backing Diameter |
327.91 mm |
| db - Cone Backface Backing Diameter |
334.01 mm |
| Da - Cup Frontface Backing Diameter |
411.50 mm |
| Db - Cup Backface Backing Diameter |
406.91 mm |
| Ab - Cage-Cone Frontface Clearance |
-0.5 mm |
| Aa - Cage-Cone Backface Clearance |
14.2 mm |
| a - Effective Center Location3 |
7.4 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 |
52200 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 |
201000 lbf |
| C0 - Static Radial Rating |
401000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 |
37200 lbf |
| K - Factor7 |
1.4 |
| e - ISO Factor8 |
0.42 |
| Y - ISO Factor9 |
1.44 |
| G1 - Heat Generation Factor (Roller-Raceway) |
1882.6 |
| G2 - Heat Generation Factor (Rib-Roller End) |
272.9 |
| Cg - Geometry Factor |
0.171 |