d - 3 mm

D - 8 mm

B - 4 mm

d₁ - - 4.35 mm

D₂ - - 7.25 mm

D₃ - 9.5 mm

C - 0.9 mm

r_1,2 - min. - 0.15 mm

d_a - min. - 3.8 mm

r_a - max. - 0.15 mm

Basic dynamic load rating - C - 0.319 kN

Basic static load rating - C₀ - 0.09 kN

Fatigue load limit - P_u - 0.004 kN

Reference speed - 150000 r/min

Limiting speed - 75000 r/min

Calculation factor - k_r - 0.025

Calculation factor - f₀ - 6.1

Mass bearing - 0.00095 kg

• Model Number: W 639/3 R-2Z
• Inner Diameter：8mm Outer Diameter：3mm Width：4mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-15
• Application:ventilator anesthesia machine etc,Hair styling device,wall materials,hydraulic cylinder,Reflective Materials Industrial fabrics,centrifugal pump,stacker lift platform,experimental equipment,cleaning agent,surgical instruments,Machine tools
• Similar models:SKF W639 SKF W639/2R-2Z ISO 639 CYSD 1639-Z ISO 639ZZ ISO 639-2RS SKF W639/3R-2RS1 CYSD 1639-RS SKF W639/2.5R-2ZS CYSD 1639-ZZ
• BEARING POWER International Trading Co.,Ltd. specialize in W639/3R-2Z products，there is large inventory of SKF W 639/3 R-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 639/3 R-2Z Which SKF W639/3R-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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  NUP305-E-MPA	25	62	17	NKE	Cylindrical Roller Bearings
  PW42800038CSHD	42	80	38	PFI	Angular Contact Ball Bearings
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  NAO50x78x40	50	78	40	FAG	NEEDLE BEARINGS
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  SAF034	5.9375			Torrington	PILLOW BLOCKS
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  XW-191/2				CONSOLIDATED	THRUST BALL BEARINGS