NU 20/670 ECMA/HB1Single row cylindrical roller bearing, NU design

SKU: NU 20/670 ECMA/HB1Single 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:196580

Dimensions - NU 20/670 ECMA/HB1

Dimensions

d
670 mm
Bore diameter
D
980 mm
Outside diameter
B
180 mm
Width
D1
890 mm
Shoulder diameter of outer ring
F
746 mm
Raceway diameter of inner ring
r1,2
min. 7.5 mm
Chamfer dimension
s
max. 7 mm
Permissible axial displacement

Abutment dimensions - NU 20/670 ECMA/HB1

Abutment dimensions

da
min. 698 mm
Diameter of spacer sleeve
da
max. 736 mm
Diameter of spacer sleeve
db
min. 752 mm
Diameter of shaft abutment
Da
max. 952 mm
Diameter of housing abutment
ra
max. 6 mm
Radius of fillet

Calculation data

Basic dynamic load rating C
5 390 kN
Basic static load rating C0
11 000 kN
Fatigue load limit Pu
750 kN
Reference speed
500 r/min
Limiting speed
800 r/min
Minimum load factor kr
0.14
Limiting value e
0.3
Calculation factor Y
0.4

Mass

Mass
480 kg

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