F684ZZ Shielded Flanged Ball Bearing | 4 × 9 × 4 mm, 10.3 mm Flange

F684ZZ miniature flanged bearing with metal shields on both sides. Its main body has nominal dimensions of 4 × 9 × 4 mm, while the flange has a nominal diameter of 10.3 mm.

Nominal dimensions

• Reference: F684ZZ.
• Inner diameter: 4 mm.
• Body outer diameter: 9 mm.
• Overall width: 4 mm.
• Flange diameter: 10.3 mm.
• Flange width: 1 mm.
• Metal shields on both sides.
• Supplied quantity: 1 bearing.

Flange function

The flange provides an axial reference and can help locate the bearing against the edge of a housing. It does not by itself replace a retaining system where loads, vibration or displacement are present.

Applications and compatibility

It can be used in compact mechanisms, rollers, guides, pulleys and printed assemblies designed for F684ZZ geometry. It may be found in 3D printing, robotics and CNC projects, but it is not a universal replacement for a specific machine.

Check both the 9 mm main housing and the space required for the 10.3 mm flange. A housing designed for a non-flanged 684ZZ bearing may not provide the necessary flange recess.

Related bearings

The 624ZZ bearing measuring 4 × 13 × 5 mm has the same 4 mm bore but a different geometry and is not a direct replacement. For a flanged version with a 5 mm bore, see the F695ZZ.