This Hirobo spare is an RC-scale W-type bearing holder used in model helicopter repair and fine tuning. It takes a 19mm diameter bearing and provides a compact, stable seat for tail or main shaft components. The design prioritizes proper fit and replacement function over cosmetic differences.
Typical installation occurs during bearing service or when correcting unwanted shaft endplay. The holder secures the 19mm bearing so it stays concentric under rotational forces, assisting with reliable tail control and rotor balance.
For setup: recheck shaft alignment and bearing preload post-install, confirm no interference with surrounding components, and perform a low-speed spin inspection before flight. Apply threadlock to fasteners if recommended by the original assembly instructions and inspect bearings on a regular schedule.
This item fits Hirobo Eagle series frames and is compatible with the Freya, EX, and SX variants where the parts list calls for a W-type holder for a 19mm bearing.
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