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：2025-12-15
• Application:security equipment,electrostatic protection,Optical Instruments,marine analysis and testing equipment,equipment,glass,medical equipment,experimental equipment,defogging and degreasing,Ball screw,car
• Similar models:ZEN S684-2RS AST 684H-2RS FBJ F684 KOYO 684/1BZ KOYO SB684556 ZEN S684-2Z NSK 6848 CYSD 6848-RZ FBJ F684ZZ NSK F684
• 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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