d - 3 mm

D - 8 mm

B - 4 mm

C - 4 mm

d1 - 4,3 mm

d2 - – mm

r1 min. - 4,2 mm

r2 min. - 4,2 mm

D1 - 7,3 mm

D2 - 0,15 mm

da min. - 4,3 mm

Da max. - 7,3 mm

ra max. - 0,15 mm

Weight - 0,00083 Kg

Basic dynamic load rating (C) - 0,319 kN

Basic static load rating (C0) - 0,09 kN

Fatigue load limit (Pu) - 0,004

Reference speed - 150000 r/min

Limiting speed - 75000 r/min

Calculation factor (f0) - 6,1

Calculation factor (kr) - 0,025

• Model Number:W639/3-2Z
• Inner Diameter：3mm Outer Diameter：8mm Width：4mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-12
• Application:Traffic Fire Protection Equipment Security equipment,chamfering machine etc,Gripper Swing,scientific instruments,tapping machine,physical instruments,Laser Cutting,air conditioning tools,roller lathe,Blood coagulation reagent,ventilation heating equipment
• Similar models:SKF W639/2.5R-2ZS NSK 639 SKF W639/3-2Z SKF W639-2RS1 SKF W639/3R-2Z SKF W639/3R-2RS1 CYSD 1639 CYSD 1639-Z CYSD 1639-2RS ISO 639ZZ
• BEARING POWER International Trading Co.,Ltd. specialize in W639/3-2Z products，there is large inventory of SKF W639/3-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W639/3-2Z Which SKF W639/3-2Z 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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