NNU4938 KOYO Double-row cylindrical roller bearings
| Brand Name: |
KOYO |
| Model Number: |
NNU4938 |
| Series: |
LL382100 |
| Cone Part Number: |
LL382149 |
| Cup Part Number: |
LL382110 |
| Design Units: |
Imperial |
| Bearing Weight: |
54.8 Kg |
| Cage Type: |
Stamped Steel |
| d: |
698.500 mm |
| D: |
819.150 mm |
| PDF |
NNU4938 |
Product Details
| Series |
LL382100 |
| Cone Part Number |
LL382149 |
| Cup Part Number |
LL382110 |
| Design Units |
Imperial |
| Bearing Weight |
54.8 Kg |
| Cage Type |
Stamped Steel |
| d |
698.500 mm |
| D |
819.150 mm |
| B - Cone Width |
63.5 mm |
| C - Cup Width |
50.800 mm |
| B |
63.5 mm |
| R - Cone Backface To Clear Radius1 |
3.300 mm |
| r - Cup Backface To Clear Radius2 |
3.30 mm |
| da - Cone Frontface Backing Diameter |
717.04 mm |
| db - Cone Backface Backing Diameter |
720.09 mm |
| Da - Cup Frontface Backing Diameter |
803.91 mm |
| Db - Cup Backface Backing Diameter |
791.97 mm |
| Ab - Cage-Cone Frontface Clearance |
0.8 mm |
| Aa - Cage-Cone Backface Clearance |
5.3 mm |
| a - Effective Center Location3 |
54.6 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 |
61500 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 |
237000 lbf |
| C0 - Static Radial Rating |
716000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 |
36800 lbf |
| K - Factor7 |
1.67 |
| e - ISO Factor8 |
0.35 |
| Y - ISO Factor9 |
1.72 |
| G1 - Heat Generation Factor (Roller-Raceway) |
9940 |
| G2 - Heat Generation Factor (Rib-Roller End) |
2090.8 |
| Cg - Geometry Factor |
0.274 |