d - 20 mm
D - 42 mm
B - 12 mm
d1 - 27.1 mm
d2 - 27.1 mm
D1 - 34.8 mm
r1,2 - min. - 0.6 mm
r3,4 - min. - 0.3 mm
a - 10.2 mm
da - min. - 23.2 mm
db - min. - 23.2 mm
Da - max. - 38.8 mm
Db - max. - 40 mm
ra - max. - 0.6 mm
rb - max. - 0.3 mm
dn - 28.4 mm
Basic dynamic load rating - C - 8.7 kN
Basic static load rating - C0 - 4.3 kN
Fatigue load limit - Pu - 0.18 kN
Limiting speed for grease lubrication - 50000 r/min
Limiting speed for oil lubrication - 80000 mm/min
Ball - Dw - 6.35 mm
Ball - z - 12
Gref - 0.9 cm3
Calculation factor - f0 - 9.2
Preload class A - GA - 35 N
Preload class B - GB - 70 N
Preload class C - GC - 140 N
Preload class D - GD - 280 N
Calculation factor - f - 1.03
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.02
Calculation factor - f2C - 1.05
Calculation factor - f2D - 1.09
Calculation factor - fHC - 1.02
Preload class A - 25 N/micron
Preload class B - 34 N/micron
Preload class C - 46 N/micron
Preload class D - 65 N/micron
Mass bearing - 0.06 kg
Hot number:SKF NU 311 E CX 20312 KC+H312 ISB 22317 EKW33+H2317 KOYO 2321 RHP 39/LJT25 NTN 4T-M244249/M244210 Ruville 5938 CX 7312 A-UD SNR EX218-56 KOYO KFC090 INA F5-12M FAF FY-110X RHP HW-1/4 SKF OKBS 128 NOK VPF-22.4
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