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：2025-04-24
• Application:aerial work platform,shoe-making machinery,animal anatomy,car steering pin,Broadcasting System,Small air generators,inorganic chemical,Storage Tool,other processing,gas turbine,tray industry
• Similar models:SKF W638/1.5-2Z SKF W63801-2RS1 SKF W638/4-2RS1 ISO 63800ZZ ISB F63800ZZ NTN 638ZZ ZEN 63802-2RS ZEN F63800-2Z SKF 638-RZ SKF W638/4R-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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