NNU4992 KOYO Double-row cylindrical roller bearings
| Brand Name: |
KOYO |
| Model Number: |
NNU4992 |
| Series: |
542000 |
| Cone Part Number: |
EE542220 |
| Design Units: |
Imperial |
| Cage Type: |
Stamped Steel |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1: |
548000 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2: |
142000 lbf |
| d: |
22.0000 in |
| B - Cone Width: |
3.0000 in |
| PDF |
NNU4992 |
Product Details
| Series |
542000 |
| Cone Part Number |
EE542220 |
| Design Units |
Imperial |
| Cage Type |
Stamped Steel |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1 |
548000 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2 |
142000 lbf |
| d |
22.0000 in |
| B - Cone Width |
3.0000 in |
| R - Cone Backface To Clear Radius3 |
0.25 in |
| da - Cone Frontface Backing Diameter |
23.03 in |
| db - Cone Backface Backing Diameter |
23.39 in |
| Ab - Cage-Cone Frontface Clearance |
0.15 in |
| Aa - Cage-Cone Backface Clearance |
0.59 in |
| a - Effective Center Location4 |
2.55 in |
| C90 - Dynamic Radial Rating (90 million revolutions)5 |
81600 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)6 |
315000 lbf |
| C0 - Static Radial Rating |
728000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)7 |
71000 lbf |
| K - Factor8 |
1.15 |
| G1 - Heat Generation Factor (Roller-Raceway) |
5730 |
| G2 - Heat Generation Factor (Rib-Roller End) |
782 |
| Cg - Geometry Factor |
0.26 |