NN4976K NSK Double row cylindrical roller bearings
| Brand Name: |
NSK |
| Model Number: |
NN4976K |
| Series: |
HM252300 |
| Cone Part Number: |
HM252344 |
| Cup Part Number: |
HM252310 |
| Design Units: |
Imperial |
| Bearing Weight: |
44.30 Kg |
| Cage Type: |
Pin-Type |
| d: |
254.000 mm |
| D: |
422.275 mm |
Product Details
| Series |
HM252300 |
| Cone Part Number |
HM252344 |
| Cup Part Number |
HM252310 |
| Design Units |
Imperial |
| Bearing Weight |
44.30 Kg |
| Cage Type |
Pin-Type |
| d |
254.000 mm |
| D |
422.275 mm |
| B - Cone Width |
79.771 mm |
| C - Cup Width |
66.675 mm |
| B |
86.121 mm |
| R - Cone Backface To Clear Radius1 |
6.860 mm |
| r - Cup Backface To Clear Radius2 |
3.30 mm |
| da - Cone Frontface Backing Diameter |
280.92 mm |
| db - Cone Backface Backing Diameter |
287.02 mm |
| Da - Cup Frontface Backing Diameter |
401.07 mm |
| Db - Cup Backface Backing Diameter |
391.92 mm |
| Ab - Cage-Cone Frontface Clearance |
7.4 mm |
| Aa - Cage-Cone Backface Clearance |
8.9 mm |
| a - Effective Center Location3 |
-9.4 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 |
90100 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 |
348000 lbf |
| C0 - Static Radial Rating |
475000 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 |
51300 lbf |
| K - Factor7 |
1.76 |
| e - ISO Factor8 |
0.33 |
| Y - ISO Factor9 |
1.8 |
| G1 - Heat Generation Factor (Roller-Raceway) |
1550 |
| G2 - Heat Generation Factor (Rib-Roller End) |
152 |
| Cg - Geometry Factor |
0.15 |