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Tapered Roller Bearings/single-row tapered roller bearing

Single row tapered roller bearing (metric series) inner diameter 15-420mm_30256

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External dimensions（mm)

d	280
D	500
T	89
B	80
C	67
Inner ring γ(minimum)	6
Outer Ring γ(minimum)	5

Rated load(N)

C_r	1240000
C_or	1900000

Rated load{kgf}

C_r	127000
C_or	194000

Rated speed min^-1

grease	630
oil	850

Bearing code

30256

ISO355
size Series
(refer to)

—

Installation size(mm)

d_a（minimum）	313
d_b(maximum）	339
d_a(maximum）	478
d_a（minimum）	436
D_b(minimum)	462
S_a(minimum）	12
S_b(minimum）	22
Inner ring γ_a(maximum）	5
Outer Ring γ_a（maximum）	4

Location of
action point
(mm)

98.5

constant

0.44

axial load
coefficient

Y₁	1.4
Y₀	0.74

weight(kg)

(refer to)

66.3

describe

Bearings are mainly used in industries such as construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electricity, and railways

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132 2888 8061

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Single row tapered roller bearing (metric series) inner diameter 15-420mm

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Quickly find the product you need

Tapered Roller Bearings/single-row tapered roller bearing

Single row tapered roller bearing (metric series) inner diameter 15-420mm_30256

External dimensions（mm)

Rated load(N)

Rated load{kgf}

Rated speed min-1

Bearing code

ISO355size Series(refer to)

Installation size(mm)

Location of action point(mm)

constant

axial loadcoefficient

weight(kg)

describe

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Rated speed min^-1

ISO355
size Series
(refer to)

Location of
action point
(mm)

axial load
coefficient