Posted by SainSmart on
Written by Graham
Spindle Motors Comparison
This is a comparison of spindle motors available for small routers, based on the SainSmart Genmitsu ‘3018’ family, including the 3020-PRO MAX.
Physical Differences
The motor size must match the motor mount on your router. You can’t put a 52mm diameter motor in a 44mm diameter hole or secure a 44mm diameter motor in a 52mm diameter hole. Height also matters, as it affects how close to the bed the tip of the collet and the bit can be placed.
Measurements
The testing device measures Motor RPM, supply voltage, current, and Target RPM. It can display current readings or log data to the serial port.
| Measurement | Std 775 – Pro | Std 775 - PROVer | GS775M 20K | Brushless 24V | 52mm 48V 3020 |
|---|---|---|---|---|---|
| Max Start (dB) | 58 | 54 | 77 | 48 | 65 |
For additional support, please visit the SainSmart Genmitsu CNC Facebook Group.
![[Part 2] Advanced CNC Design with Vectric Aspire](http://www.sainsmartshop.com/cdn/shop/articles/Frame_36747_2_f374d9f8-a0e0-465e-80ed-1bb349fc0a3b.png?v=1737359282 "[Part 2] Advanced CNC Design with Vectric Aspire")