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：2025-12-27
• Application:Seals,standing experimental equipment,Hair styling device,agrochemical,machine tool spindle,steam Hydraulic control element,Technical Equipment,Safety protection,Automobile,CNC,Other Machine Tools
• Similar models:ISB SS639/2-ZZ CYSD 1639-RS CYSD 1639-Z SKF W639/3R-2RS1 SKF W639/3-2Z NSK 639VV SKF W639/3-2RS1 ISB SS639/3-ZZ ISO 639ZZ SKF W639-2Z
• 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.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  23148RK	240	400	128	KOYO	Spherical Roller Bearings
  2208K	40	80	23	ISO	Self-Aligning Ball Bearings
  23926YM	130	180	37	Timken	Spherical Roller Bearings
  23972 KW33	360	480	90	ISO	Spherical Roller Bearings
  3923	115	200	66	FBJ	Thrust Ball Bearings
  463/453X	47,625	104,775	30,162	Timken	Tapered Roller Bearings
  51322	110	190	63	FBJ	Thrust Ball Bearings
  6206 N	30	62	16	ISB	Deep Groove Ball Bearings
  61924	165	120	22	SKF	Deep Groove Ball Bearings
  6218	90	160	30	NTN	Deep Groove Ball Bearings
  634-2Z	16	4	5	SKF	Deep Groove Ball Bearings
  EGB0505-E40	5	7	5	INA	Plain Bearings
  NF3030	150	225	56	ISO	Cylindrical Roller Bearings
  NH1080	400	600	90	CX	Cylindrical Roller Bearings
  95712	1.2500	1.8750	.7500	BERLISS	JOURNAL ROLLER ASSEMBLIES
  GE160AX	160	290	65	INA	SPHERICAL PLAIN BEARINGS
  6207.2Z	35	72	17	FAG	DEEP GROOVE BALL BEARINGS
  ER-28	3.3465	1.7500	1.0937	Sealmaster	BALL BEARING
  FYCJ-8R	8	24	15	NSK	NEEDLE BEARINGS
  NU-344E	220	460	88	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS