d - 4 mm

D - 8 mm

B - 3 mm

C - 3 mm

d1 - 5 mm

d2 - – mm

r1 min. - 4,8 mm

r2 min. - 4,8 mm

D1 - 7,4 mm

D2 - 0,1 mm

da min. - 4,9 mm

Da max. - 7,5 mm

ra max. - 0,1 mm

Weight - 0,0005 Kg

Basic dynamic load rating (C) - 0,225 kN

Basic static load rating (C0) - 0,072 kN

Fatigue load limit (Pu) - 0,003

Reference speed - 150000 r/min

Limiting speed - 75000 r/min

Calculation factor (f0) - 7,2

Calculation factor (kr) - 0,02

• Model Number: W637/4X-2Z
• Inner Diameter：4mm Outer Diameter：8mm Width：3mm
• Type：Deep Groove Ball Bearings
• Update date：2025-04-22
• Application:car steering pin,journal lathe,fabric products,Flame Cutting,historical instruments,molding machine,circulating pump,multi-knife lathe,Anesthetic Equipment,reducer,Cylinder Special
• Similar models:SKF W637/8R-2ZS SKF W637/9R-2Z SKF W637/4XR-2Z SKF W637/5X-2ZS SKF W637/5X-2Z AST 637HZZ AST 637H-2RS SKF W637/5XR-2Z SKF W637/8X SKF W637
• BEARING POWER International Trading Co.,Ltd. specialize in W637/4X-2Z products，there is large inventory of SKF W637/4X-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W637/4X-2Z Which SKF W637/4X-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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  210RU92	210	350		Timken	Cylindrical Roller Bearings
  216-2Z	140	80	26	SKF	Deep Groove Ball Bearings
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  3312	60	130	54	CYSD	Angular Contact Ball Bearings
  54234	170	240	104.4	NACHI	Thrust Ball Bearings
  5S-7000UCG/GNP42	10	26	8	NTN	Angular Contact Ball Bearings
  709 CE/P4AH	24	9	7	SKF	Angular Contact Ball Bearings
  7315BDT	75	160	37	NACHI	Angular Contact Ball Bearings
  7409 ADT	45	120	58	ISO	Angular Contact Ball Bearings
  AST50 03IB03	4,7625			AST	Plain Bearings
  EXSP204	20			SNR	Bearing Units
  K58X63X31.8	58,000	63,000		NTN	Needle Roller Bearings
  J-55	7,938	12,7	7,92	NSK	Needle Roller Bearings
  SR4A	6,35	19,05	5,558	ZEN	Deep Groove Ball Bearings
  TAFI 91912	9	19	12	IKO	Needle Roller Bearings
  UCP215	75			CRAFT	Bearing Units
  USPH206	30			SNR	Bearing Units
  L18TA404	4.2500	5.2500	.5000	FAG	FOUR POINT ANGULAR CONTACT BALL BEARINGS
  NNC4940V.C3	200	280	80	SKF	CYLINDRICAL ROLLER BEARINGS
  6104KK	20	42	12	NH	DEEP GROOVE BALL BEARINGS