Outrunner Motor Shaft SPHK-2216MSK for HK-2216, 4mm Main with 3.17mm Output by Scorpion  [SPHK-2216MSK]

SCORPION HK-2216 SERIES OUTRUNNER MOTOR SHAFT KIT 4MM SHAFT / 3.17MM OUTPUT END
Price:
AUD$5.38
Brand:
Scorpion
Model:
SPHK-2216MSK
Condition:
Brand New
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Service part: HK-2216 main shaft

Intended as a straight replacement, this shaft kit fits HK-2216 series outrunners commonly used in electric RC applications. It swaps into the motor to carry rotation from the rotor to the pinion or output coupling, addressing issues from a bent or worn original shaft.

The part prioritises correct fit and interface compatibility over performance changes. With a 4mm main shaft and 3.17mm output end, the dimensions align with HK-2216 series mounting and coupling points. Inspect bearings and rotor faces before installing because replacing the shaft will not fix preexisting bearing wear.

This kit is handy when rebuilding motors after heavy duty use or when shaft runout impacts throttle smoothness. Follow standard motor service steps, set correct axial and radial clearances after fitment, and bench spin the motor to ensure the shaft rotates freely before reinstalling in the model.

Can I use this shaft in any outrunner that lists HK-2216 compatibility?

If the motor follows HK-2216 series dimensions for the shaft and output end, this kit will match. Confirm your motor uses the 4mm main shaft and 3.17mm output interface before purchasing.

Will swapping the shaft improve motor performance?

No. The replacement restores correct mechanical alignment and serviceability but does not increase motor power or efficiency on its own.

What post-install inspections are suggested?

After installation, check for bearing play, confirm axial and radial alignment, and perform a bench spin to verify the shaft runs true and without binding.

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