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FAG
K9278-9220
Tapered roller bearing K9278-9220
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Main Dimensions & Performance Data
d
68.263 mm
Bore diameter
D
161.925 mm
Outside diameter
B
46.038 mm
Width, inner ring
C
31.75 mm
Width, outer ring
T
49.212 mm
Width, total
Cr
255,000 N
Basic dynamic load rating, radial
C0r
300,000 N
Basic static load rating, radial
Cur
35,000 N
Fatigue load limit, radial
nG
4,350 1/min
Limiting speed
nϑr
4,000 1/min
Thermal speed rating
≈m
4.6 kg
Weight

Mounting dimensions
da max
89 mm
Maximum diameter of shaft shoulder
db min
106 mm
Minimum diameter of shaft shoulder
Da min
138 mm
Minimum diameter of housing shoulder
Da max
151 mm
Maximum diameter of housing shoulder
Db min
153 mm
Minimum diameter of housing shoulder
Ca min
5 mm
Minimum axial space
Cb min
13 mm
Minimum axial space
ra max
3.6 mm
Maximum fillet radius of shaft
rb max
3.3 mm
Maximum fillet radius of housing

Dimensions
r1, 2 min
3.6 mm
Minimum chamfer dimension of inner ring back face
r3, 4 min
3.3 mm
Minimum chamfer dimension of outer ring back face
a
50 mm
Distance between the apexes of the pressure cones
d1
115.9 mm
Guidance rib diameter of inner ring

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

Calculation factors
e
0.71
Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y
Y
0.85
Dynamic axial load factor
Y0
0.47
Static axial load factor

Your current product variant
Heat treatmentStandard
CageStandardSheet steel cage, roller-guided
Internal designStandard
Quality levelStandard
Number of rolling element rows1Single-row design
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