d - 2 mm

D - 5 mm

B - 2.3 mm

d₁ - - 2.7 mm

D₂ - - 4.4 mm

r_1,2 - min. - 0.08 mm

d_a - min. - 2.5 mm

d_a - max. - 2.6 mm

D_a - max. - 4.5 mm

r_a - max. - 0.08 mm

Basic dynamic load rating - C - 0.094 kN

Basic static load rating - C₀ - 0.025 kN

Fatigue load limit - P_u - 0.001 kN

Reference speed - 200000 r/min

Limiting speed - 100000 r/min

Calculation factor - k_r - 0.02

Calculation factor - f₀ - 6.5

Mass bearing - 0.0002 kg

• Model Number: W 638/2-2Z
• Inner Diameter：5mm Outer Diameter：2mm Width：2,3mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-16
• Application:Control,other rubber,machining,ultra-quiet generators,natural instruments,Forming mold,hook,atomizer class,chamfering machine etc,chemical,mechanical annex
• Similar models:SKF W638/4XR-2RS1 SKF W63801-2Z SKF W63800-2RS1 ZEN SF63800 ISB SS638/5-ZZ SKF W638/4X-2RS1 SKF W63804R ISB F63800 SKF W638/1 ISB F63800ZZ
• BEARING POWER International Trading Co.,Ltd. specialize in W638/2-2Z products，there is large inventory of SKF W 638/2-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 638/2-2Z Which SKF W638/2-2Z 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
  22206EAW33	30,000	62,000	20,000	SNR	Spherical Roller Bearings
  23188 KCW33	440	720	226	CX	Spherical Roller Bearings
  369S/363	47,625		22,225	KOYO	Tapered Roller Bearings
  47TS553934	275	385	340	KOYO	Tapered Roller Bearings
  609	9	24	7	ISO	Deep Groove Ball Bearings
  634H	4	16	5	AST	Deep Groove Ball Bearings
  7228C	140	250	42	AST	Angular Contact Ball Bearings
  8601				Ruville	Wheel Bearings
  89315TN	75	135	36	NBS	Thrust Roller Bearings
  ETA-C1R-1006PX1	50	72,727	41	NTN	Tapered Roller Bearings
  EX215-48	76,2	130	92,1	SNR	Deep Groove Ball Bearings
  GE 25 SB	25	47	31	ISB	Plain Bearings
  K16X24X20	16	20		KOYO	Needle Roller Bearings
  KDC160	406,4	431,8	12,7	KOYO	Deep Groove Ball Bearings
  M6311	55	120	29	KOYO	Deep Groove Ball Bearings
  RNA4904	25	37	17	KOYO	Needle Roller Bearings
  S699-2Z	9	20	6	ZEN	Deep Groove Ball Bearings
  TUP2 300.100	300	305		CX	Plain Bearings
  AH3240	200	190		SKF	WITHDRAWAL SLEEVES
  XLS-16	16.0000	21.5000	2.7500	CONSOLIDATED	DEEP GROOVE BALL BEARINGS