NU 2256 ECMASingle row cylindrical roller bearing, NU design

SKU: NU 2256 ECMASingle row cylindrical roller bearing, NU 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 no flanges on the inner ring, NU design bearings can accommodate axial displacement in both directions. An important feature is the separable design, which facilitates mounting and enables the bearing components to be interchanged.

ID:195705

Dimensions - NU 2256 ECMA

Dimensions

d
280 mm
Bore diameter
D
500 mm
Outside diameter
B
130 mm
Width
D1
433 mm
Shoulder diameter of outer ring
F
333 mm
Raceway diameter of inner ring
r1,2
min. 5 mm
Chamfer dimension
s
max. 10.2 mm
Permissible axial displacement

Abutment dimensions - NU 2256 ECMA

Abutment dimensions

da
min. 300 mm
Diameter of spacer sleeve
da
max. 320 mm
Diameter of spacer sleeve
db
min. 331 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
2 200 kN
Basic static load rating C0
3 450 kN
Fatigue load limit Pu
305 kN
Reference speed
1 200 r/min
Limiting speed
1 900 r/min
Minimum load factor kr
0.2
Limiting value e
0.3
Calculation factor Y
0.4

Mass

Mass
115 kg

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