Hirobo HI2525003 D5mm Ball Stay H=5 - Linkage Pivot Replacement for RC Helicopters  [HI2525003]

Linkage pivot ball stay

This Hirobo HI2525003 D5mm ball stay H=5 is an RC-scale linkage component intended for general helicopter parts use. It functions as the pivot point where ball links seat, providing a compact, repeatable mounting position in control linkages and small assemblies. The D5mm dimension and H=5 height are the defining sizing cues to check against the part you need.

Installation is straightforward in typical linkage arrangements: confirm the D5mm seating matches the mating ball or socket, orient the stay so the ball bears evenly, and verify there is no excessive lateral play after assembly. Because this is a small replacement part, measure the bore and the clearance envelope before fitting rather than relying on assumed model compatibility.

Tuning and maintenance role: use the ball stay to restore lost precision where worn link pivots introduce slop, and inspect it regularly for wear at the seating surface. Replacing worn stays can tighten control feel and make servo inputs more consistent without changing electronic or mechanical settings elsewhere in the helicopter.