Spindle Bushing for GPH 346 HI0403205 by Hirobo  [HI0403205]

GPH 346 Spindle Bushing Overview

This Hirobo spindle bushing is produced as a direct replacement for the GPH 346 spindle assembly on RC models. It functions as a wearable support part to reestablish the intended running clearance when the original bushing shows wear, with emphasis on maintenance and tuning rather than on material claims.

For experienced builders, fitting is a matter of removing the old bushing, checking the condition of adjacent bearings and shaft surfaces, then pressing the new bushing squarely into the housing to preserve concentricity. Proper seating will help keep the rotor balanced and predictable during setup procedures.

Refitting a fresh spindle bush can reduce axial play and make pitch and cyclic trims more repeatable during tuning. Include this item in regular rotorhead upkeep to maintain geometry and reduce iterative trimming on test flights. This component is intended for RC use only and not for full scale aircraft.