Sceadu EX & SDEX Bearing Mount 13x19 - Hirobo HI0412270  [HI0412270]

How the HI0412270 affects rotor tuning

This bearing holder is an aftermarket replacement designed for the Sceadu EX and SDEX assemblies named in the part title. By locking 13x19 bearings into a consistent position, it helps preserve intended rotor geometry and reduces variables that can introduce vibration or drift in flight behavior.

Fitting tips: press the bearing into the holder so the race is flush with the seating face, check axial clearance before applying final torque, and confirm alignment after the first hover. Because the holder fixes location rather than adjusting preload, changes to rotor balance are achieved by bearing selection and shim configuration rather than by modifying the holder itself.

Tuning notes: small differences in bearing seating can shift rotor balance and tail response, so use consistent installation practice and re-measure vibration levels after any replacement or adjustment.