d - 4 mm

D - 9 mm

B - 2,5 mm

C - 2,5 mm

r min. - 0,15 mm

da min. - 4,8 mm

Da max. - 8,2 mm

ra max. - 0,1 mm

Weight - 0,00063 Kg

Basic dynamic load rating (C) - 0,64 kN

Basic static load rating (C0) - 0,225 kN

(Grease) Lubrication Speed - 53 000 r/min

(Oil) Lubrication Speed - 63 000 r/min

• Model Number: 684 A
• Inner Diameter：4mm Outer Diameter：9mm Width：2,5mm
• Type：Deep Groove Ball Bearings
• Update date：2025-04-24
• Application:Switch,engineering machinery,coal mill,Equipment,Rolling mill gear box,spreader series,X-ray Equipment,disposable,tooth filling,surgical instruments,Ball screw
• Similar models:NTN W684ASSA NTN 6848 ISO F684ZZ ZEN SF684-2Z NTN 6840ALLU CYSD 6840-ZZ ISO 684A CYSD 6848-ZZ NSK F684ZZ CYSD 6844-2RZ
• BEARING POWER International Trading Co.,Ltd. specialize in 684A products，there is large inventory of NSK 684 A . We has been built up long-term cooperation with NSK company, could make a bulk order of the 684 A Which NSK 684A 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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  GAC 140 SP	140	210	45	ISB	Plain Bearings
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  P 30 TF	30			SKF	Bearing Units
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  B72-9LSS	4.5000	7.0000	3.9375	RBC	SPHERICAL PLAIN BEARINGS
  RNA374730	47		30	SKF (Old No.)	NEEDLE BEARINGS
  6300-RSNR	10	35	11	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
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