d - 8 mm

D - 28 mm

B - 9 mm

C - 9 mm

r min. - 0,3 mm

da min. - 10 mm

Da max. - 26 mm

ra max. - 0,3 mm

Weight - 0,0283 Kg

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

Basic static load rating (C0) - 1,97 kN

(Grease) Lubrication Speed - 28 000 r/min

(Oil) Lubrication Speed - 34 000 r/min

• Model Number: 638
• Inner Diameter：8mm Outer Diameter：28mm Width：9mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-16
• Application:Technical Equipment,chromatography,powder metallurgy,respirator,die casting mold,Pneumatic Actuator,Gear grinding machine,plastic molding,gas turbine,engine,air purification
• Similar models:ISB SS638/5-ZZ ISB SS63800-ZZ SKF W638/8-2Z ISB SS638/8-ZZ SKF W63803 ISO 63801ZZ CX 63800-2RS ISB 63801-ZZ ZEN S63800-2Z ISB F63801
• BEARING POWER International Trading Co.,Ltd. specialize in 638 products，there is large inventory of NSK 638 . We has been built up long-term cooperation with NSK company, could make a bulk order of the 638 Which NSK 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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