d - 25 mm
D - 37 mm
B - 7 mm
d1 - 29.1 mm
d2 - 29.1 mm
D1 - 33.1 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.15 mm
a - 7.7 mm
da - min. - 27 mm
db - min. - 27 mm
Da - max. - 35 mm
Db - max. - 36.2 mm
ra - max. - 0.3 mm
rb - max. - 0.15 mm
dn - 29.5 mm
Basic dynamic load rating - C - 4.2 kN
Basic static load rating - C0 - 3.2 kN
Fatigue load limit - Pu - 0.137 kN
Limiting speed for grease lubrication - 45000 r/min
Limiting speed for oil lubrication - 70000 mm/min
Ball - Dw - 3.175 mm
Ball - z - 20
Gref - 0.21 cm3
Calculation factor - f0 - 16.4
Preload class A - GA - 22 N
Preload class B - GB - 66 N
Preload class C - GC - 132 N
Calculation factor - f - 1.11
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.1
Calculation factor - f2C - 1.18
Calculation factor - fHC - 1.02
Preload class A - 29 N/micron
Preload class B - 49 N/micron
Preload class C - 71 N/micron
Mass bearing - 0.019 kg
Hot number:SNR 7312 C/DF SKF 7228 C/DT OKB 2312EW1 NSK 40KWD02U42CA-01LB ISO 7328 CDB Timken BH-88 KOYO K18X22X22SE NBS HK 3020 NSK NN3011ZTBKR CX UCFLX09 Torrington 240/560 SKF 7307 BECBY SKF NU 1028 M/C3VL2071 NTN 61903 NOK 4DP-180
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