d - 4 mm

D - 10 mm

B - 4 mm

C - 4 mm

d1 - 5,9 mm

d2 - – mm

r1 min. - 5,6 mm

r2 min. - 5,6 mm

D1 - 8,8 mm

D2 - 0,2 mm

da min. - 5,8 mm

Da max. - 8,8 mm

ra max. - 0,2 mm

Weight - 0,0013 Kg

Basic dynamic load rating (C) - 0,637 kN

Basic static load rating (C0) - 0,25 kN

Fatigue load limit (Pu) - 0,011

Reference speed - 130000 r/min

Limiting speed - 63000 r/min

Calculation factor (f0) - 12

Calculation factor (kr) - 0,02

• Model Number:W638/4X-2Z
• Inner Diameter：4mm Outer Diameter：10mm Width：4mm
• Type：Deep Groove Ball Bearings
• Update date：2023-03-12
• Application:food packaging,Special Equipment,lifting tackle,Hair styling device,embroidery cloth,root canal filling,medical equipment,joint protection,Broadcasting System,water protection,office equipment
• Similar models:ZEN 63800-2RS ZEN S638-2Z NSK 638ZZ1 CX 63802 SKF 638/8-2Z CX 63801ZZ SKF W638/5-2Z SKF W638/4X-2RS1 CX 63803 ISO 63803
• BEARING POWER International Trading Co.,Ltd. specialize in W638/4X-2Z products，there is large inventory of SKF W638/4X-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W638/4X-2Z Which SKF W638/4X-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.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  14138A/14274A	34,925		19,583	KOYO	Tapered Roller Bearings
  3NCHAC001CA	12	28	8	KOYO	Angular Contact Ball Bearings
  6215-2NSE	75	130	25	NACHI	Deep Groove Ball Bearings
  6409	45	120	29	FBJ	Deep Groove Ball Bearings
  C 4128 V/VE240	225	140	85	SKF	Cylindrical Roller Bearings
  CX032				CX	Wheel Bearings
  BK304020	30	40	20	CX	Cylindrical Roller Bearings
  C243020	38,1	47,625		INA	Needle Roller Bearings
  GE80DO-2RS	80	120	55	ISO	Plain Bearings
  HM926747/HM926710	127.000	228.600	53.975	NACHI	Tapered Roller Bearings
  NK25/16	25	33	16	AST	Needle Roller Bearings
  NN 3011 TN/SP	55	90	26	SKF	Cylindrical Roller Bearings
  NU2311	55	120	43	NTN	Cylindrical Roller Bearings
  R170.09				SNR	Wheel Bearings
  SIGEW160ES	160			LS	Plain Bearings
  SMN112K	44,45	100	42,86	Timken	Deep Groove Ball Bearings
  6000Z	10	26	8	FAG	DEEP GROOVE BALL BEARINGS
  TWA12UU	.7500		2.3750	NB	LINEAR RECIRCULATING BALL BEARINGS PILLOW BLOCKS
  UQOL03DTL7	17	35	10	New Departure	ANGULAR CONTACT BALL BEARINGS
  7013CDP4GA	65	100	18	SKF	ANGULAR CONTACT BALL BEARINGS