NJ 256 MASingle row cylindrical roller bearing, NJ design

SKU: NJ 256 MASingle row cylindrical roller bearing, NJ design

Single row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds. Having two integral flanges on the outer ring and one on the inner ring, NJ design bearings can accommodate axial displacement in one direction. An important feature is the separable design, which facilitates mounting and enables the bearing components to be interchanged.

ID:195698

Dimensions - NJ 256 MA

Dimensions

d
280 mm
Bore diameter
D
500 mm
Outside diameter
B
80 mm
Width
d1
360 mm
Shoulder diameter of inner ring
D1
417 mm
Shoulder diameter of outer ring
F
340 mm
Raceway diameter of inner ring
r1,2
min. 5 mm
Chamfer dimension
s
max. 3.8 mm
Permissible axial displacement

Abutment dimensions - NJ 256 MA

Abutment dimensions

da
min. 300 mm
Diameter of spacer sleeve
da
max. 333 mm
Diameter of spacer sleeve
db
min. 364 mm
Diameter of shaft abutment
Da
max. 480 mm
Diameter of housing abutment
ra
max. 4 mm
Radius of fillet

Calculation data

Basic dynamic load rating C
1 140 kN
Basic static load rating C0
1 800 kN
Fatigue load limit Pu
156 kN
Reference speed
1 400 r/min
Limiting speed
1 900 r/min
Minimum load factor kr
0.15
Limiting value e
0.2
Calculation factor Y
0.6

Mass

Mass
73 kg

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