3.17mm Motor Shaft Coupler - RS555 Motor
thingiverse
I had to attach an impeller to RS555 motor, which boasts a 9mm shaft length and a 3.17mm diameter. The M3 nut and bolt secure both propeller and shaft to the coupler, making it a precise fit. Due to its asymmetrical design, the propeller nuts must be positioned directly in front of the motor for optimal performance.
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