Angular contact ball bearings, single row 7409 BGM
Bearing number : 7409 BGM
Size (mm) : 45x120x29
Brand : SKF
Bore Diameter (mm) : 45
Outer Diameter (mm) : 120
Width (mm) : 29
Bearing dimensions and specification in SKF catalogue:
d - 45 mm
D - 120 mm
B - 29 mm
d1 - - 74.9 mm
d2 - - 60.9 mm
D1 - - 91.8 mm
a - 49.3 mm
r1,2 - min. - 2 mm
r3,4 - min. - 2 mm
da - min. - 55 mm
Da - max. - 110 mm
Db - max. - 107.7 mm
ra - max. - 2 mm
rb - max. - 2 mm
Basic dynamic load rating - C - 85.2 kN
Basic static load rating - C0 - 55 kN
Fatigue load limit - Pu - 2.4 kN
Reference speed - 7000 r/min
Limiting speed - 7500 r/min
Calculation factor - kr - 0.1
Calculation factor - ka - 1.6
Calculation factor - e - 1.14
Calculation factor - X - 0.57
Calculation factor - Y0 - 0.52
Calculation factor - Y1 - 0.55
Calculation factor - Y2 - 0.93
Calculation factor - X - 0.35
Calculation factor - Y0 - 0.26
Calculation factor - Y1 -
Calculation factor - Y2 - 0.57
Mass bearing - 1.55 kg
SKF/FAG bearings | Adventure Rid
I sold bearings for many years. IMHO, SKF are arguably the best, but to be fair there isn't a great deal of difference in quality between the various "better" brands these days. My personal preference is still SKF, but any reputable brand such as NTN, NSK, NACHI, KOYO and FAG will be of consistently excellent quality.
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