NNU4938 KOYO Double-row cylindrical roller bearings
| Brand Name: |
KOYO |
| Model Number: |
NNU4938 |
| Series: |
LM48500 |
| Cone Part Number: |
LM48548A |
| Cup Part Number: |
LM48514XP |
| Design Units: |
Imperial |
| Bearing Weight: |
0.30 Kg |
| Cage Type: |
Stamped Steel |
| d: |
34.925 mm |
| D: |
68.263 mm |
| PDF |
NNU4938 |
Product Details
| Series |
LM48500 |
| Cone Part Number |
LM48548A |
| Cup Part Number |
LM48514XP |
| Design Units |
Imperial |
| Bearing Weight |
0.30 Kg |
| Cage Type |
Stamped Steel |
| d |
34.925 mm |
| D |
68.263 mm |
| B - Cone Width |
18.288 mm |
| C - Cup Width |
13.970 mm |
| B |
18.037 mm |
| R - Cone Backface To Clear Radius1 |
0.760 mm |
| r - Cup Backface To Clear Radius2 |
1.27 mm |
| da - Cone Frontface Backing Diameter |
42.16 mm |
| db - Cone Backface Backing Diameter |
40.39 mm |
| Da - Cup Frontface Backing Diameter |
63.00 mm |
| Db - Cup Backface Backing Diameter |
58.93 mm |
| Ab - Cage-Cone Frontface Clearance |
2 mm |
| Aa - Cage-Cone Backface Clearance |
0.3 mm |
| a - Effective Center Location3 |
-3.6 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 |
3760 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 |
14500 lbf |
| C0 - Static Radial Rating |
14200 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 |
2430 lbf |
| K - Factor7 |
1.55 |
| e - ISO Factor8 |
0.38 |
| Y - ISO Factor9 |
1.59 |
| G1 - Heat Generation Factor (Roller-Raceway) |
18 |
| G2 - Heat Generation Factor (Rib-Roller End) |
10.6 |
| Cg - Geometry Factor |
0.0666 |