d - 9 mm

D - 30 mm

B - 10 mm

d₂ - - 15.3 mm

D₂ - - 25.28 mm

r_1,2 - min. - 0.6 mm

d_a - min. - 13 mm

d_a - max. - 15.2 mm

D_a - max. - 26 mm

r_a - max. - 0.6 mm

Basic dynamic load rating - C - 4.9 kN

Basic static load rating - C₀ - 2.3 kN

Fatigue load limit - P_u - 0.1 kN

Reference speed - 60000 r/min

Limiting speed - 30000 r/min

Calculation factor - k_r - 0.035

Calculation factor - f₀ - 12.9

Mass bearing - 0.0335 kg

• Model Number: W 639-2Z
• Inner Diameter：30mm Outer Diameter：9mm Width：10mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-17
• Application:engineering machine,Storage Device,gas turbine,impression material,packaging machinery,historical instruments,Beauty and Body,Pump,printing equipment,Industrial,floor industry
• Similar models:SKF W639/2.5R-2ZS SKF W639/2-2Z NSK 639 CYSD 1639-RS ISO 639-2RS ISB SS639/2-ZZ CYSD 1639-Z AST 639HZZ FBJ 639ZZ NSK 639ZZ
• BEARING POWER International Trading Co.,Ltd. specialize in W639-2Z products，there is large inventory of SKF W 639-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 639-2Z Which SKF W639-2Z 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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