SainSmart GS-775M spindle upgrade for 3018 Pro

SainSmart started offering an upgraded spindle for their 3018 series of CNC routers. This one is rated at 20,000 RPMs at 24v. The one that comes with the 3018 Pro is rated at 7,000 RPMs at 24v. The new one is almost 3 times faster!! Se we ordered one. Also ordered a new collet extension to put on the new motor.

This video is a how to for putting the collet extension on to the spindle and getting the new motor installed onto the Genmitsu 3018 Pro. We will talk about the issues we ran into. It seems this new spindle is NOT compatible with the 3018 Pro. It draws more power than the controller can output.
GS-775M spindle motor is compatible with the factory/out of the box Genmitsu 3018 Pro IF you modify your GCode. The power supply does not have enough power to drive the spindle at more than about 40% power (S4000) at startup. If the GCode is modified to ramp up the S value, then it can work at higher settings.
With $30=10000

S4000
M3
G4 P.25
S6000
M3
G4 P.25
S8000
M3
G4 P.25
S10000
M3

Видео SainSmart GS-775M spindle upgrade for 3018 Pro канала CNC AT Home