NNU4072 KOYO Double-row cylindrical roller bearings
| Brand Name: |
KOYO |
| Model Number: |
NNU4072 |
| Cone Part Number: |
DX940730 |
| Cup Part Number: |
DX252051 |
| Design Units: |
Imperial |
| Bearing Weight: |
16.700 Kg |
| Cage Type: |
Stamped Steel |
| d: |
209.550 mm |
| D: |
317.500 mm |
| B - Cone Width: |
63.5 mm |
| PDF |
NNU4072 |
Product Details
| Cone Part Number |
DX940730 |
| Cup Part Number |
DX252051 |
| Design Units |
Imperial |
| Bearing Weight |
16.700 Kg |
| Cage Type |
Stamped Steel |
| d |
209.550 mm |
| D |
317.500 mm |
| B - Cone Width |
63.5 mm |
| C - Cup Width |
46.038 mm |
| B |
63.5 mm |
| R - Cone Backface To Clear Radius1 |
4.320 mm |
| r - Cup Backface To Clear Radius2 |
3.30 mm |
| da - Cone Frontface Backing Diameter |
226.82 mm |
| db - Cone Backface Backing Diameter |
232.92 mm |
| Da - Cup Frontface Backing Diameter |
300.00 mm |
| Db - Cup Backface Backing Diameter |
286.00 mm |
| Ab - Cage-Cone Frontface Clearance |
5.3 mm |
| Aa - Cage-Cone Backface Clearance |
8.1 mm |
| a - Effective Center Location3 |
7.9 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 |
52500 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 |
202000 lbf |
| C0 - Static Radial Rating |
290000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 |
47000 lbf |
| K - Factor7 |
1.12 |
| e - ISO Factor8 |
0.52 |
| Y - ISO Factor9 |
1.15 |
| G1 - Heat Generation Factor (Roller-Raceway) |
912.5 |
| G2 - Heat Generation Factor (Rib-Roller End) |
126.1 |
| Cg - Geometry Factor |
0.146 |