Learning Centre: CNC Router Configuration Guide


RPM 18000-24000

Most small engraving bits and mill ends are designed to run at 18,000 rpm or higher. If your spindle can handle this speed then you have the opportunity to maximize travel speeds and reduce working time, very relevant if you’re working in an industrial environment, less so if this is a hobby CNC application.


If you are doing almost all engraving and carving with small diameter cutters then very little hp is required (<5 hp, even 2 hp) If you are looking to build cabinets and will be using large panel cutter and larger end mills (>3/4”) then a high hp machine (>5 hp) will be required, in order to remain productive anyways and not have to move at the speed of a turtle. If you wish to cut metal you need all the horsepower you can afford.

Greater torque + greater power = greater speed in hard materials with heavier passes!


Buying a CNC spindle with enough torque will be one of the keys to maximizing what you can do with your router. The general rule is the larger the diameter of cutter and the harder the material is, and, the more material you wish to remove per cut (productivity), the greater the amount of torque you’re going to need.

OMNI CNC Routers Spindle


Hand Held Controller

– DSP A11, used for 3 axis control
– DSP A15 for multi spindle and Pneumatic tool change cnc router
– DSP A18 for 4 axis rotary 4 linkage moving
– NK105 for 3 axis ,and Pneumatic tool change cnc router

OMNI CNC Routers Controllers - DSP



OMNI CNC Routers Controllers - Syntec


– Syntec
– Siemens

OMNI CNC Routers Controllers - Siemens



Stepper motor cost is lower than servo motor with the same power rating.

Speed & Torque

Servos are excellent in applications requiring speeds greater than 2,000 RPM and for high torque at high speeds or requiring high dynamic response. Steppers are excellent at speeds less than 2,000 RPM and for low to medium acceleration rates and for high holding torque.


Because of the way stepper motors are constructed and operate they have very good repeatability with little or no tuning required. Servo motors can have very good repeatability if setup
correctly. The encoder quality can also play into repeatability.

Least Heat Production

Because the current draw of a servo motor is proportional to the load applied, heat production is very low comparing stepper motor. Stepper motors draw excess current regardless of load. The excess power is dissipated as heat.


Servo motors are very efficient. Yielding 80-90% efficiency given light loads. Stepper motors consume a lot of power for outputting, much of that is converted to heat. Stepper motors are usually about 70% efficient.


Servo motors produce very little noise. Stepper motors produce a slight hum due to the control process. However OMNI offer high quality driver, and it will decrease the noise level.

Yasakawa Motors

Material Hold Down

By Clamps: CNC Router Table T Slot Table

CNC Router Table T Slot Table

By Vacuum Pump: Becker VTLF SERIES | Oil-less Vacuum Pumps

Becker VTLF SERIES | Oil-less Vacuum Pumps