d - 8 mm

D - 28 mm

B - 9 mm

C - 9 mm

r min. - 0,3 mm

da min. - 10 mm

Da max. - 26 mm

ra max. - 0,3 mm

Weight - 0,0283 Kg

Basic dynamic load rating (C) - 4,55 kN

Basic static load rating (C0) - 1,97 kN

(Grease) Lubrication Speed - 28 000 r/min

(Oil) Lubrication Speed - 34 000 r/min

• Model Number:638
• Inner Diameter：8mm Outer Diameter：28mm Width：9mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-16
• Application:Other machinery,linear drive,Anti-defibrillation pacing,forming machine,meat products machine,vacuum suction cup,motorcycle,metal mold,sanitation facilities,electrostatic protection,Safety protection
• Similar models:SKF W638/4XR-2Z ISB F63801 SKF W63805 PFI 638-2RSC3 ISO 63801 SKF W638/5-2Z NTN 638Z SKF W638/1.5R-2Z SKF W63806 SKF W638/4-2Z
• BEARING POWER International Trading Co.,Ltd. specialize in 638 products，there is large inventory of NSK 638 . We has been built up long-term cooperation with NSK company, could make a bulk order of the 638 Which NSK 638 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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  22215-E-K-W33+AH315	75	130	31	NKE	Spherical Roller Bearings
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  47679/47620	76,2	133,35	33,338	CX	Tapered Roller Bearings
  6309	45	100	25	NACHI	Deep Groove Ball Bearings
  71915 CB/P4A	105	75	16	SKF	Angular Contact Ball Bearings
  81111-TV	55	78	16	INA	Thrust Roller Bearings
  BK384820	38	48	20	ISO	Cylindrical Roller Bearings
  H71930AC	150	210	28	AST	Angular Contact Ball Bearings
  N1921-K-M1-SP	105	145	20	FAG	Cylindrical Roller Bearings
  NU1060MA	300	445		Timken	Cylindrical Roller Bearings
  RB 20035	200	295	35	ISB	Thrust Roller Bearings
  T-HH234031/HH234010	139,7	307,975	88,9	NTN	Tapered Roller Bearings
  WJ-283412	44,45	53,975		NSK	Needle Roller Bearings
  AH24140	200	190		FAG	WITHDRAWAL SLEEVES
  NKS43	58		22	INA	NEEDLE BEARINGS
  NAKD30DZ	12	30	14	FAG (Old No.)	NEEDLE BEARINGS
  GE25GS-2RS	25	47	28	IKO	SPHERICAL PLAIN BEARINGS
  32060X	300	460	100	STEYR	TAPERED ROLLER BEARINGS
  NU-2308	40	90	33	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS