Tuesday 30 September, 2014 |

Difference between Water Cooled and Air Cooled

by astech-cnctools

What is Difference between Water Cooled and Air Cooled?

Router spindle, spindle motor, router bits and router collets, are usually called "engraving head".

Cnc router spindle, as very important part for cnc router, needs to work for a long-term continuously, and in high-speed. So, it's necessary to keep cnc spindle under normal temperatures.

There are mainly two cooling ways: water cooled and air cooled.

And, what is difference between water cooled and air cooled?

1.   What is water cooled:

Cooling by water cycle:

(1) There is one current water cushion inside router machine. We could flow the internal water by the water cushion, thus remove the heat, and reach cooling effect;

(2) Or, install a water cooler outside cnc machine, which with the same principle as above;

(3) The temperature by water cooled will not above 40 degrees;

2.   What is air cooled:

Cooling by fan:

Air cooled spindle radiates heat to the cooling plate by the wind from the fan, so as to achieve cooling effect;

3.   Water cooled and Air cooled in common:

From internal structure: air cooled and water cooled are both turned with stator coil;

4.   Difference between water cooled and air cooled:

(1) Motor control method difference between air cooled & water cooled:

①   Water cooled is frequency controlled;

②   To air cooled, both inverter controlled and not inverter controlled is ok;

(2) Cooling effect difference between water cooled and air cooled:

Water cooled is with better cooling effect by adopting water cycle; because the temperature won't be above 40 degrees after flow;

(3) Noise difference between water cooled and air cooled:

Water cooled spindle is virtually no noise;

But air cooled spindle is with loud noise;

(4) Service life difference between water cooled and air cooled:

①   Air cooled spindle is with much longer life than water cooled spindle;

②   Pay attention to the water cooled spindle:

Such as change the water frequently or use industrial water chiller;  

(5) Precision difference between water cooled and air cooled:

①   Water cooled is with much higher precision than air cooled;

②   To water cooled spindle: the precision of axial runout and circular runout is both under 0.003mm;

(6) Spindle repair difference between water cooled and air cooled:

①   Air cooled can be interfered by dust easily, so not easy to maintain;

②   Water cooled could keep out of dust;

(7) Difference between water cooled and air cooled in forms:

Besides Difference Between Water Cooled and Air Cooled,

You may also interest in:

Spindle Type of CNC Router;

How to select cnc spindle.

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