Heavy duty needle roller bearing NA4856 with inner ring,size:280x350x69mm
- d(bore diameter): 280mm
- D(outerside diameter): 350mm
- B(width): 69mm
- r1:
- 2( chamfer): min2mm
- F(inner ring): 305mm
- Basic dynamic load rating: 409kN
- Basic static load rating: 1290kN
- Fatigue load limit: 129kN
- Limiting speed: 1280r/min
China excellent quality Heavy duty,NA4856,Needle roller bearing
with machined rings,drawn cup or outer ring,Size (mm) : 280x350x69,Needle roller bearings NA4856
Needle roller bearings with an inner ring are used for applications where the shaft cannot be hardened and ground. The permissible axial displacement of the shaft relative to the housing is limited for bearings with an inner ring.
Application: lifting equipment, agricultural, pumps, air conditioning units, fans and general engineering applications.
Bearing number : NA4856
Size (mm) : 280x350x69
Brand : NTN
Bore Diameter (mm) : 280
Outer Diameter (mm) : 350
Width (mm) : 69
Bearing dimensions and specification catalogue:
d - 280 mm
F - 305 mm
D - 350 mm
B - 69 mm
C - 69 mm
r min. - 2 mm
s - 2,5 mm
da min. - 289 mm
Da max. - 341 mm
ra max. - 1.2 mm
Weight - 15,5 Kg
Basic dynamic load rating (C) - 455 kN
Basic static load rating (C0) - 1300 kN
(Grease) Lubrication Speed - 850 r/min
(Oil) Lubrication Speed - 1 300 r/min
