SainSmart Genmitsu 4040-PRO CNC Router User Manual page 20

Step 8: Change the Spindle Holder (Optional)
There needs to be a separate section for mounting 52mm motors and the SainSmart lasers. Or it could be incorporated
here.
This machine is compatible with 52mm motors and by changing the spindle holder 65mm and 69mm trimmer routers such
as Makita 65mm trimmer router and DEWALT 69mm trimmer router, by changing the spindle holder, You need to order
these compatible spindle holders separately.
1. Firstly, loosen the spindle motor fixing screw on the original spindle clamp base and remove the spindle motor and its
washer.
2. As shown in the picture, remove the 4 set screws on both sides of the original spindle holder.
18
Spindle Motor
and Washer
Original
Spindle Holder
Spindle Holder
Set Screw