Product Details

High Quality Spherical Roller Bearing Stocks 22228 Mbw33 ABEC-3

Model Number 22228
Min.Order Quantity 1 pcs
Price Negotiable

Product Features

Bearing numberSM1013K
BrandTimken
B213,5 mm
Bore Diameter (mm)20,6375
d20,6375 mm
Basic dynamic load rating (C)15,6 kN
d138,1 mm
Size (mm)20.6375x52x34.93
G17,5 mm
B144,45 mm

ABEC scale - Wikipedia

The ABEC scale is an industry accepted standard for the tolerances of a ball bearing. ... There are five classes from largest to smallest tolerances: 1, 3, 5, 7, 9

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In an application like this, an ABEC - 7 or 9 bearing rating may be appropriate. However, a skateboard with 54mm wheels turning 20,000 RPM will be traveling 

The ABEC Myth | TransWorld SKATEboarding

Jul 13, 2002 - The ABEC rating system uses odd numbers, ranging from 1 to 9. The higher the number, the tighter the tolerance of the bearing, and thus, the 
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