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INA
71808-TN
Angular contact ball bearing 71808-TN
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Main Dimensions & Performance Data
d
40 mm
Bore diameter
D
52 mm
Outside diameter
B
7 mm
Width
Cr
6,300 N
Basic dynamic load rating, radial
C0r
5,800 N
Basic static load rating, radial
Cur
405 N
Fatigue load limit, radial
nG
16,200 1/min
Limiting speed
nϑr
7,200 1/min
Reference speed
≈m
0.033 kg
Weight

Mounting dimensions
da min
42 mm
Minimum diameter of shaft shoulder
Da max
50 mm
Maximum diameter of housing shoulder
Db max
50.6 mm
Maximum diameter of housing shoulder
ra max
0.3 mm
Maximum fillet radius of shaft
ra1 max
0.2 mm
Maximum fillet radius of housing

Dimensions
rmin
0.3 mm
Minimum chamfer dimension
r1 min
0.2 mm
Minimum chamfer dimension
D1
47.3 mm
Shoulder diameter on outer ring wide side face
d1
44.744 mm
Shoulder diameter on inner ring wide side face
a
22.8 mm
Distance between the apexes of the pressure cones
α
40 °
Contact angle

Temperature range
Tmin
-30 °C
Operating temperature min.
Tmax
120 °C
Operating temperature max.

Your current product variant
Design variantBB
SealingWithoutNot sealed
CageTVPsolid cage made of glass-fiber reinforced polyamid PA66
Tolerance classPNNormal (PN)
Dimensional / heat stabilization S0Rings dimensional stabilized up to 150°
LubricantWithoutBearing not greased
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