Hirobo TSURUGI SX HI0404504 Blade Holder Replacement for Helicopters  [HI0404504]

Blade Holder for TSURUGI SX — Technical Notes

The Hirobo HI0404504 blade holder is supplied as a single replacement component compatible with TSURUGI SX series helicopters. It occupies the blade retention position on the main rotor head and is intended for maintenance and parts renewal tasks.

Fitment and role: confirm the airframe is a TSURUGI SX variant before fitting, since the holder is designed for that platform. The part secures the blade root at the rotor head and supports accurate pitch linkage alignment during pre-flight inspections and adjustments.

Installation and tuning notes: disconnect power and follow safe bench procedures, then remove the old holder and install the HI0404504 using the original screws and the torque recommendations in your helicopter documentation. Complete static balance and vibration assessments, then check blade tracking at low rotor speed to verify a flight-safe setup.