Most CNC machine tools have a coolant delivery system designed to handle a limited range of applications. In the real world, however, your set-ups can be extremely varied - So you need lots of options for getting coolant to the cutting edge. No single nozzle will work well for all applications. That's why we've engineered a wide range of coolant nozzles to fit your application.
Functions
Benefits
Choosing the correct coolant nozzle. Consider the specifics of your application.
Choose a nozzle with an orifice size that matches your pump’s capacity.
Select an orifice size too big and coolant pressure will drop off, an orifice size too small and an inadequate amount of coolant will reach the tool tip and can result in damage.
Note: Flow rates are based on water at 20°. Actual results may vary with fluid type, extension length and aiming angle.
System pressure (bar) | 0.34 | 0.69 | 1.38 | 2.07 | 2.76 | 4.14 | 5.52 |
Orifice diameter (mm) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) |
1.02 | 0.32 | 0.45 | 0.64 | 0.77 | 0.91 | 1.18 | 1.41 |
1.57 | 0.86 | 1.14 | 1.68 | 2 | 2.32 | 2.82 | 3.32 |
2.18 | 1.64 | 2.32 | 3.27 | 3.86 | 4.55 | 5.46 | 6.82 |
2.79 | 2.91 | 4.09 | 6.36 | 7.27 | 8.18 | 10 | 11.37 |
4.06 | 6.36 | 9.09 | 12.73 | 15.91 | 18.18 | 21.82 | 25.46 |
5.59 | 11.37 | 16.82 | 23.64 | 30.46 | 35.46 | 42.28 | 48.19 |
System pressure (bar) | 6.89 | 10.34 | 13.79 | 20.68 | 34.47 | 68.95 | 103.42 |
Orifice diameter (mm) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) | Flow rate (litres/minute) |
1.02 | 1.59 | 1.86 | 2.09 | 2.77 | 4 | 5.46 | 6.36 |
1.57 | 3.64 | 4.55 | 5.46 | 6.82 | 9.55 | 13.64 | 17.28 |
2.18 | 7.73 | 9.09 | 10.46 | 12.73 | 16.82 | 23.64 | 28.64 |
2.79 | 14.09 | 16.37 | 18.64 | 23.64 | 29.55 | 40.46 | 49.55 |
4.06 | 28.19 | 34.55 | 41.37 | 49.1 | 63.65 | 90.01 | 110.47 |
5.59 | 53.64 | 65.46 | 75.01 | 89.1 | 114.56 | 161.39 | 197.75 |
To calculate the average coolant exit velocity (important in some grinding operations where it is often desirable to match or exceed the peripheral velocity of the wheel) refer to the formula explained below. Choose an orifice size that produces sufficient back pressure to achieve the desired velocity.
Choose a nozzle extension that suits your application. Short projections are more compact and less likely to be knocked out of position by swarf or vibration. Longer extensions are easier to aim, produce a more streamline or laminar flow and shoot further.
The most common coolant pump on CNC machine tools is a single stage centrifugal pump, normally designed to move high volumes of water at low pressure (typically .2 to 1.4 bar). Multi stage centrifugal pumps are capable of higher pressures (typically 1.4 to 14 bar) while still producing high flow rates. Positive displacement pumps are used for very high pressure applications upto 140 bar and are generally used with
small diameter orifi ces due to their lower flow rates.
Alexia House
Glenmore Business Park
Portfield Works
Chichester, PO19 7BJ (UK)
Telephone 0333 207 4497
or + 44 (0) 1483 266 777
Email sales@wixroyd.com
Company registration no. GB0496138
Company VAT number GB 408154022
For other bank details visit our FAQs page.