303/28R

Tapered roller bearings - Single-row - Metric series

Specifications
(Boundary dimensions ...etc)

d
28 mm
D
68 mm
T
19.75 mm
B
18 mm
C
16 mm
r(min.)
1.5 mm
r1(min.)
1.5 mm
Basic load ratings : Cr
66.9 kN
Basic load ratings : C0r
54.0 kN
Fatigue load limit : Cu
8.00 kN
Limiting speeds(Grease lub.)
6100 min-1
Limiting speeds(Oil lub.)
8200 min-1
Load center spread : a
14.9 mm
Constant e
0.32
Axial load factors : Y1
1.88
Axial load factors : Y0
1.04

Mounting dimensions

da(min.)
36.5 mm
db(max.)
38 mm
Da(max.)
59.5 mm
da(min.)
58 mm
db(min.)
63 mm
Sa(min.)
2 mm
Sb(min.)
3.5 mm
ra(max.)
1.5 mm
rb(max.)
1.5 mm

Refer.

(Refer.)Mass
0.345 kg

Technical calculation for this product.

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