Hirobo HI0404504 Main Rotor Blade Holder for TSURUGI SX  [HI0404504]

Overview of the TSURUGI SX Blade Retainer

The Hirobo HI0404504 blade holder is supplied as a single replacement item for TSURUGI SX model helicopters. It provides the blade retention interface on the main rotor head and is used when servicing or renewing rotor components.

Fitment and role: verify your airframe is a TSURUGI SX variant before fitting, as the part is intended for that platform. The holder locks the blade root into the rotor head and helps preserve correct pitch linkage alignment during setup and pre-flight inspections.

Installation and tuning notes: disconnect power and apply bench safety procedures, then swap the existing holder for the HI0404504 using the original hardware and the torque guidance in your manual. After installation, perform static balance and vibration assessments, and check blade tracking at low rotor speed to ensure proper operation.