Shielded Ball Bearings 4x11x4 mm (2) HI2500095 by Hirobo  [HI2500095]

4x11x4 mm sealed bearings - pack of two

The Hirobo HI2500095 is supplied as a pair of 4 x 11 x 4 mm shielded ball bearings, using the #694ZZ designation for sealed construction. They serve as compact replacement bearings for small RC drivetrains, rotor assemblies and precision hub positions where a low-profile sealed bearing is required.

These bearings reduce rotational friction and are a straightforward fix when an OEM bearing shows noise or looseness. During installation, ensure the bearing is pressed in evenly and that the shaft is smooth and free of damage; test for radial and axial play after mounting to confirm correct installation.

Service note: while shielded bearings resist light contaminants, regular inspection and replacement when wear appears will sustain drivetrain performance. Order by model HI2500095 or code #694ZZ to match dimensions and shielding style exactly.