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30304-A High Quality Tapered Roller Bearing

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Tapered roller bearings 303, main dimensions to DIN ISO 355 / DIN 720, separable, adjusted or in pairs

 
 
d
20 mm
Bore diameter
D
52 mm
Outside diameter
B
15 mm
Width, inner ring
C
13 mm
Width, outer ring
T
16,25 mm
Width, total
Cr
34.000 N
Basic dynamic load rating, radial
C0r
32.500 N
Basic static load rating, radial
Cur
3.700 N
Fatigue load limit, radial
nG
15.600 1/min
Limiting speed
nϑr
9.700 1/min
Thermal speed rating
≈m
0,168 kg
Weight
da max
28 mm
Maximum diameter of shaft shoulder
db min
27 mm
Minimum diameter of shaft shoulder
Da min
44 mm
Minimum diameter of housing shoulder
Da max
45 mm
Maximum diameter of housing shoulder
Db min
47 mm
Minimum diameter of housing shoulder
Ca min
2 mm
Minimum axial space
Cb min
3 mm
Minimum axial space
ra max
1,5 mm
Maximum fillet radius of shaft
rb max
1,5 mm
Maximum fillet radius of housing
r1, 2 min
1,5 mm
Minimum chamfer dimension of inner ring back face
r3, 4 min
1,5 mm
Minimum chamfer dimension of outer ring back face
a
12 mm
Distance between the apexes of the pressure cones
d1
36,1 mm
Guidance rib diameter of inner ring
Tmin
-30 °C
Operating temperature min.
Tmax
120 °C
Operating temperature max.
e
0,3
Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y
Y
2
Dynamic axial load factor
Y0
1,1
Static axial load factor

 

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