d - 8 mm

D - 28 mm

B - 9 mm

C - 9 mm

r min. - 0,3 mm

r1 min. - 0,3 mm

da min. - 10 mm

Da max. - 26 mm

ra max. - 0,3 mm

Weight - 0,029 Kg

Basic dynamic load rating (C) - 4,55 kN

Basic static load rating (C0) - 1,95 kN

(Grease) Lubrication Speed - 26000 r/min

(Oil) Lubrication Speed - 32000 r/min

Calculation factor (f0) - 12,3

• Model Number:638
• Inner Diameter：8mm Outer Diameter：28mm Width：9mm
• Type：Deep Groove Ball Bearings
• Update date：2023-03-06
• Application:garden machinery,vertical sawing machine,pressure control valve,plant determination,Digital Generator,Embroidery,Small air generators,Liposuction device,coupling type,small diesel generators,machine tool spindle
• Similar models:ISB SS638/5-ZZ ZEN 63800 ZEN 638-2RS ISB F63802 ZEN S638-2Z SKF W63802 SKF 638-2RZ SKF W638-2RZ CYSD 1638-Z SKF W63801R-2Z
• BEARING POWER International Trading Co.,Ltd. specialize in 638 products，there is large inventory of KOYO 638 . We has been built up long-term cooperation with KOYO company, could make a bulk order of the 638 Which KOYO 638 is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express.Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

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