Hirobo HI0404511 SX Bearing Holder Set for Eagle/Freya/EX/SX helicopters  [HI0404511]

SX bearing holder overview

This replacement set contains the SX series bearing holders intended as common service parts for Hirobo Eagle, Freya, EX and SX model helicopters. It is supplied as an accessory pack for RC-scale helicopter maintenance and repair, not for full-scale aircraft.

The holder set's role is to retain and locate ball bearings in the rotor/drive geometry, helping maintain alignment after disassembly or during rebuilds. When exchanging worn holders you preserve shaft concentricity and reduce play that affects rotor tracking and responsiveness.

Fitment notes: verify the SX designation and match the HI0404511 part number against your parts list before installation, confirm bearing sizes and shaft interfaces, and use correct fasteners and thread locking practices appropriate for model-scale assemblies. Check clearances after assembly and perform a ground spin test at low throttle to confirm smooth operation before flight.