KOYO 684 bearing

Bearing 684

684 KOYO bearing,

KOYO 684 bearing, Size: 4x9x2.5. KOYO 684 are used in a wide variety of applications, suitable for high speeds and are robust in operation, and need little maintenance.

Deep groove ball bearing 684

Bearing number : 684

Size (mm) : 4x9x2.5

Brand : KOYO

Bore Diameter (mm) : 4

Outer Diameter (mm) : 9

Width (mm) : 2,5

Bearing dimensions and specification in KOYO catalogue:

d - 4 mm

D - 9 mm

B - 2,5 mm

C - 2,5 mm

r min. - 0,15 mm

r1 min. - 0,15 mm

da min. - 5,2 mm

Da max. - 7,8 mm

ra max. - 0,1 mm

Weight - 0,0006 Kg

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

Basic static load rating (C0) - 0,23 kN

(Grease) Lubrication Speed - 59000 r/min

(Oil) Lubrication Speed - 70000 r/min

Calculation factor (f0) - 12,8

Tags :  KOYO , 4x9x2.5