Hirobo HRB-0414312 - 10 Hard Grip Mast Lock  [HRB-0414312]

Precision mast lock for main shaft retention

This RC-scale mast lock is offered as a replacement collar for Hirobo Eagle Freya series parts. The hard-grip clamping face helps hold the main mast steady during bench setup, routine inspections and tuning without implying use on full-size aircraft.

The component’s purpose is focused: sit over the main mast and stop axial movement so pitch and rotor rigging stay stable while you adjust linkages, inspect bearings or swap head hardware. The collar directs clamping force onto the mast to cut down on slippage during bench adjustments and test runs.

Fitting is simple for anyone familiar with helicopter maintenance. Slide the collar onto the mast, line up the set screw access, then tighten with the correct hex driver until rotation and axial play are prevented. Do not over-tighten, perform a brief spin and pitch check after fitting, and re-check after an initial hover on the airframe.

Materials and mounting notes are published under the Eagle Freya parts category, so confirm fit for your specific Eagle Freya variant before final installation. This accessory is intended for hobby-scale maintenance, setup and tuning tasks.