d - 2,5 mm

D - 6 mm

B - 2,6 mm

C - 2,6 mm

d1 - 3,7 mm

d2 - – mm

r1 min. - 3,1 mm

r2 min. - 3,1 mm

D1 - 5,4 mm

D2 - 0,08 mm

da min. - 3,6 mm

Da max. - 5,5 mm

ra max. - 0,08 mm

Weight - 0,00035 Kg

Basic dynamic load rating (C) - 0,117 kN

Basic static load rating (C0) - 0,036 kN

Fatigue load limit (Pu) - 0,002

Reference speed - 170000 r/min

Limiting speed - 85000 r/min

Calculation factor (f0) - 7,1

Calculation factor (kr) - 0,02

• Model Number: W638/2.5-2Z
• Inner Diameter：2,5mm Outer Diameter：6mm Width：2,6mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-12
• Application:Flame Cutting,expectoration machine,stacker lift platform,Industrial,Surveying Surveying Instruments,flexible processing,medical Equipment,tapping machine,agriculture,Cylinder Standard,tobacco machinery
• Similar models:ZEN 63800 ISB 63800ZZ ZEN 63802-2Z CYSD 1638 SKF W63803 SKF W638/8-2Z SKF W63804 ISO 63802ZZ FBJ 638 ZEN S638-2RS
• BEARING POWER International Trading Co.,Ltd. specialize in W638/2.5-2Z products，there is large inventory of SKF W638/2.5-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W638/2.5-2Z Which SKF W638/2.5-2Z 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
  17SF28	44,45	71,438	33,32	Timken	Plain Bearings
  31307	35	80	22,75	ISB	Tapered Roller Bearings
  3381/3329-B	38,1	81,755	30,391	Timken	Tapered Roller Bearings
  3NCHAF021CA	105	160	26	KOYO	Angular Contact Ball Bearings
  713630210				FAG	Wheel Bearings
  GEK35XS-2RS	35	80	54	LS	Plain Bearings
  K14x17x17	14	17	17	ISO	Needle Roller Bearings
  KBK 9x13x12	9	13		NBS	Needle Roller Bearings
  KZK12X16X10	12	16	10	ISO	Needle Roller Bearings
  LMK20LUU	20	32		Samick	Linear Bearings
  NJ304	20,000	52,000	15,000	NTN	Cylindrical Roller Bearings
  NNCF5030 V	150	225	100	CX	Cylindrical Roller Bearings
  NU 2211	55	100	25	SIGMA	Cylindrical Roller Bearings
  R18-2Z	28,575	53,975	12,7	ZEN	Deep Groove Ball Bearings
  NJ2226	130	230	64	FAG	CYLINDRICAL ROLLER BEARINGS
  ANK6590	65	90	3	FAG (Old No.)	THRUST NEEDLE BEARINGS
  NJ2234E	170	310	86	SKF	CYLINDRICAL ROLLER BEARINGS
  22320	100	215	73	Torrington	SPHERICAL ROLLER BEARINGS
  6309	45	100	25	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
  D-36	4.3437	2.6875		CONSOLIDATED	THRUST BALL BEARINGS