d - 20 mm
D - 37 mm
B - 9 mm
d1 - 25.6 mm
d2 - 25.6 mm
D1 - 31.4 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.2 mm
a - 8.4 mm
da - min. - 22 mm
db - min. - 22 mm
Da - max. - 35 mm
Db - max. - 35.6 mm
ra - max. - 0.3 mm
rb - max. - 0.2 mm
dn - 26.8 mm
Basic dynamic load rating - C - 6 kN
Basic static load rating - C0 - 3.2 kN
Fatigue load limit - Pu - 0.137 kN
Limiting speed for grease lubrication - 53000 r/min
Limiting speed for oil lubrication - 75000 mm/min
Ball - Dw - 4.762 mm
Ball - z - 15
Gref - 0.45 cm3
Calculation factor - f0 - 9.8
Preload class A - GA - 25 N
Preload class B - GB - 50 N
Preload class C - GC - 100 N
Preload class D - GD - 200 N
Calculation factor - f - 1.05
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.07
Calculation factor - f2C - 1.12
Calculation factor - f2D - 1.18
Calculation factor - fHC - 1.04
Preload class A - 24 N/micron
Preload class B - 32 N/micron
Preload class C - 44 N/micron
Preload class D - 62 N/micron
Mass bearing - 0.033 kg
Hot number:NTN 71928 C/DB FLT NJ 2306 FAG NJ407+HJ407 SKF 2309 ETN9 OKB 912781 FAG 230/900-B-MB NKE 61988-MA INA CSEF055 INA EGB1512-E40 FBJ HK6012 NSK MF52BZZ CX NF2222 E Rollway (Bronze Cage) N-215 SKF 13720 SKF 7205 BECBY
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