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FAG
K21075-21212
Tapered roller bearing K21075-21212
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Main Dimensions & Performance Data
d
19.05 mm
Bore diameter
D
53.975 mm
Outside diameter
B
21.839 mm
Width, inner ring
C
15.875 mm
Width, outer ring
T
22.225 mm
Width, total
Cr
38,500 N
Basic dynamic load rating, radial
C0r
36,500 N
Basic static load rating, radial
Cur
4,000 N
Fatigue load limit, radial
nG
14,900 1/min
Limiting speed
nϑr
12,200 1/min
Thermal speed rating
≈m
0.25 kg
Weight

Mounting dimensions
da max
25 mm
Maximum diameter of shaft shoulder
db min
28 mm
Minimum diameter of shaft shoulder
Da min
40 mm
Minimum diameter of housing shoulder
Da max
46 mm
Maximum diameter of housing shoulder
Db min
50 mm
Minimum diameter of housing shoulder
Ca min
4 mm
Minimum axial space
Cb min
6 mm
Minimum axial space
ra max
1.5 mm
Maximum fillet radius of shaft
rb max
2.3 mm
Maximum fillet radius of housing

Dimensions
r1, 2 min
1.5 mm
Minimum chamfer dimension of inner ring back face
r3, 4 min
2.3 mm
Minimum chamfer dimension of outer ring back face
a
17 mm
Distance between the apexes of the pressure cones
d1
37.1 mm
Guidance rib diameter of inner ring

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

Calculation factors
e
0.59
Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y
Y
1.02
Dynamic axial load factor
Y0
0.56
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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