NU 211 ECM/HC5C3Hybrid single row cylindrical roller bearing, NU design

SKU: NU 211 ECM/HC5C3Hybrid single row cylindrical roller bearing, NU design

Hybrid single row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds. With rings made of bearing steel and rollers made of bearing grade silicon nitride, the bearings are electrically insulating. The ceramic rollers not only protect against electric current damage, but also extend bearing service life by offering enhanced bearing performance, even under difficult operating conditions. 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. The separable design facilitates mounting and enables the bearing components to be interchanged.

ID:191977

Dimensions - NU 211 ECM/HC5C3

Dimensions

d
55 mm
Bore diameter
D
100 mm
Outside diameter
B
21 mm
Width
D1
86.3 mm
Shoulder diameter outer ring
F
66 mm
Raceway diameter inner ring
s
max. 1 mm
Permissible axial displacement from the normal position of one bearing ring relative to the other
r1,2
min. 1.5 mm
Chamfer dimension
r3,4
min. 1.1 mm
Chamfer dimension

Abutment dimensions - NU 211 ECM/HC5C3

Abutment dimensions

da
min. 62 mm
Abutment diameter shaft
da
max. 64 mm
Abutment diameter shaft
db
min. 68 mm
Abutment diameter shaft
Da
max. 91 mm
Abutment diameter housing
ra
max. 1.5 mm
Fillet radius
rb
max. 1.5 mm
Fillet radius

Calculation data

Basic dynamic load rating C
84.2 kN
Basic static load rating C0
95 kN
Fatigue load limit Pu
10.2 kN
Reference speed
7 000 r/min
Limiting speed
10 000 r/min
Calculation factor kr
0.15

Mass

Mass bearing
0.54 kg

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