d - 8 mm

D - 28 mm

B - 9 mm

C - 9 mm

r min. - 0,3 mm

db max. - 12,8 mm

Db min. - 22,8 mm

rb max. - 0,3 mm

Weight - 0,0286 Kg

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

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

(Grease) Lubrication Speed - 22 000 r/min

• Model Number:638 DD
• Inner Diameter：8mm Outer Diameter：28mm Width：9mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-21
• Application:heating fans,centrifugal pump,power source,Digital Generator,Laser Devices,top industry,Garment Accessories,building decoration raw materials and accessories,forklift truck,E Beauty,sawing machine
• Similar models:ISB 63803 ZEN S638-2Z ISO 63803-2RS ISB 63801-ZZ NSK 638ZZ1 CX 63801-2RS SKF 638/4-2Z SKF W638/3R-2RS1 ZEN 63800-2Z SKF 638/5-2Z
• BEARING POWER International Trading Co.,Ltd. specialize in 638DD products，there is large inventory of NSK 638 DD . We has been built up long-term cooperation with NSK company, could make a bulk order of the 638 DD Which NSK 638DD 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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  231/530 CAK/W33 + OH 31/530 H	870	500	272	SKF	Tapered Roller Bearings
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  6922LLU	110	150	20	NTN	Deep Groove Ball Bearings
  GBRI 406024	63,5	95,25	38,35	IKO	Needle Roller Bearings
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  NU 2332 E	160	340	114	NACHI	Cylindrical Roller Bearings
  NUP218EM	90	160	30	NSK	Cylindrical Roller Bearings
  NX10	10	19	18	INA	Complex Bearings
  UK326		280	68	SNR	Deep Groove Ball Bearings
  NKS20	32		20	INA	NEEDLE BEARINGS
  SCE2416			1.0000	INA	NEEDLE BEARINGS
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  2204	20	47	18	CONSOLIDATED	SELF
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  SL05030	150	225	75	CONSOLIDATED	CYLINDRICAL ROLLER BEARING