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：2025-04-19
• Application:sheet industry,pneumatic,outdoor equipment,flexible processing,labor insurance,Dental Drill etc,generator,medical equipment,medical equipment,Display Devices,Blood coagulation reagent
• Similar models:ISO 639-2RS KOYO 639 SKF W639/3-2RS1 CYSD 1639-Z SKF W639-2RS1 ISO 639 ISB SS639/3-ZZ NSK 639ZZ SKF W639 CYSD 1639-2RS
• 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.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  07098/07196	24,981	50,005	13,495	FBJ	Tapered Roller Bearings
  23068 KCW33+AH3068	340	520	133	CX	Spherical Roller Bearings
  28R3229	28	32	29	KOYO	Needle Roller Bearings
  5303KG	17	47	22,25	Timken	Angular Contact Ball Bearings
  591/710 JR	850	710	85	SKF	Thrust Ball Bearings
  C4034K30V	170	260	90	SKF	Cylindrical Roller Bearings
  ESFE212	60			SNR	Bearing Units
  ESFTE205	25			SNR	Bearing Units
  K18X24X20H	18	24		Timken	Needle Roller Bearings
  K37X42X23.8	37,000	42,000		NTN	Needle Roller Bearings
  MJT4.1/4	107,95	222,25	44,45	RHP	Angular Contact Ball Bearings
  NCF3010 V	50	80	23	CX	Cylindrical Roller Bearings
  NJ 2992 ECMA	620	460	95	SKF	Thrust Ball Bearings
  NNU6019	95	145	90	ISO	Cylindrical Roller Bearings
  NP 1021	105	145.5		NACHI	Cylindrical Roller Bearings
  S5208-2RS	40	80	30,2	ZEN	Angular Contact Ball Bearings
  W 619/8-2Z	19	8	6	SKF	Deep Groove Ball Bearings
  L-6307	35	80	31	FAF	SELF
  SD-3156	260			Torrington	PILLOW BLOCKS
  1306RR	30	72	19	FED	DEEP GROOVE BALL BEARINGS