SKF 7221 CD/P4A轴承,SKF 7221 CD/P4A角接触球轴承-搜轴承SKF数据中心
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d - 105 mm

D - 190 mm

B - 36 mm

d1 - 131.2 mm

d2 - 131.2 mm

D1 - 163.8 mm

r1,2 - min. - 2.1 mm

r3,4 - min. - 1.1 mm

a - 37.9 mm

da - min. - 117 mm

db - min. - 117 mm

Da - max. - 178 mm

Db - max. - 183 mm

ra - max. - 2 mm

rb - max. - 1 mm

dn - 138.4 mm

Basic dynamic load rating - C - 172 kN

Basic static load rating - C0 - 153 kN

Fatigue load limit - Pu - 5.3 kN

Limiting speed for grease lubrication - 7500 r/min

Limiting speed for oil lubrication - 12000 mm/min

Ball - Dw - 26.988 mm

Ball - z - 15

Gref - 48.333 cm3

Calculation factor - f0 - 14.5

Preload class A - GA - 650 N

Preload class B - GB - 1300 N

Preload class C - GC - 2600 N

Preload class D - GD - 5200 N

Calculation factor - f - 1.08

Calculation factor - f1 - 1

Calculation factor - f2A - 1

Calculation factor - f2B - 1.01

Calculation factor - f2C - 1.03

Calculation factor - f2D - 1.05

Calculation factor - fHC - 1

Preload class A - 129 N/micron

Preload class B - 174 N/micron

Preload class C - 243 N/micron

Preload class D - 349 N/micron

Mass bearing - 3.868 kg

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