Nozzle & Orifice Charts

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Estimating Chart

Use this chart to estimate the coolant pressure to be achieved.

Click for larger image.

CoolJet high pressure pumps operate on Positive Displacement principles. The coolant pressure during the machining is the backpressure that results from the amount of coolant being forced through the tool or nozzle.

For a given tool or orifice size:

  1. As the flowrate of the coolant passing through the tool increases, the resulting coolant pressure increases.
  2. As the coolant pressure increases, the flow rate of the the coolant through the tool increases.

When designing a multiple-nozzle setup, use the table below to determine the correct nozzle diameter based on the appropriate CoolJet Model & the required Nozzle Quantity.
CoolJet Model Nozzle Quantity for max. pressure/flow
One Two Three Four
70-60
(15gpm, 1000psi)		 .140"
(3.56mm)		 .100"
(2.51mm)		 .081"
(2.06mm)		 .069"
(1.74mm)
70-30 / 70-36
(8gpm, 1000psi)		 .097"
(2.46mm)		 .069"
(1.74mm)		 .055"
(1.42mm)		 .048"
(1.23mm)
70-15 Mini
(4.2gpm, 1000psi)		 .074"
(1.88mm)		 .052"
(1.33mm)		 .043"
(1.09mm)		 .037"
(0.94mm)
100-10 Mini
(2.9gpm, 1500psi)		 .055"
(1.40mm)		 .039"
(1.00mm)		 .032"
(0.81mm)		 .028"
(0.70mm)
140-6 Mini
(1.7gpm, 2000psi)		 .039"
(1.00mm)		 .028"
(0.70mm)		 .023"
(0.58mm)		 .020"
(0.51mm)