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

Mast lock for main mast retention

This is an RC-scale mast lock intended as a replacement mast collar for Hirobo Eagle Freya series components. The part provides a hard-grip clamping surface that helps hold the main mast position during bench setup, routine checks and tuning tasks without implying use on full-size aircraft.

The design role is simple and specific: sit over the main mast and secure it against axial movement so pitch and rotor rigging remain stable while you adjust linkages, inspect bearings or swap head hardware. The collar concentrates clamping pressure on the mast to reduce slippage under test runs and bench adjustments.

Installation is straightforward for those familiar with helicopter maintenance. Slide the collar into position on the mast, align with existing access for the set screw, and tighten with an appropriate hex driver until the part firmly prevents rotation or axial play. Avoid over-tightening, perform a quick spin and pitch check after fitting, and re-check after a short hover test when installed on the airframe.

Materials and mounting details are described by the manufacturer category as an Eagle Freya parts item, so verify fit against your specific Eagle Freya variant before final installation. This accessory is presented as a component for hobby-scale maintenance, setup and tuning workflows.