ThroughSpindle™ MQL Systems

Unist offers the most technologically-advanced integrated lubrication systems
for through-spindle MQL applications:


The Infinity™ sets a new standard for performance in dual-channel, through-spindle, Minimum Quantity Lubrication (MQL) systems. Specifically designed for high-production through-spindle operations, it consistently, reliably, and accurately delivers MQL fluids through the spindle over a wide range of flow rates.

The Infinity™ has unlimited MQL rates and integrates with the machine controller at the PLC level. It’s continuous-flow pump is ideal for critical production cycles with repeated, short-duration operations. Using precise flow measurement, it monitors the pump output in real time down to flow rates as low as 1 mL/hr.
Learn more


The Quantum™ is a leap forward in Minimum Quantity Lubrication (MQL) technology. This state-of-the-art system interfaces directly with machines, giving you total control over your MQL application.

The Quantum™ is a reliable, digitally-controlled applicator suitable for through-spindle applications, complex external-spray applications, or a combination of both. It supports up to six outputs, and its intermittent positive-displacement pumps assure high accuracy with the nearly unlimited MQL rates. Discrete inputs or serial commands allow close integration with CNC programs.
Learn more



The Revolution™ is designed specifically for CNC machines. Its patented technology brings the same level of computer controlled accuracy, precision, and repeatability to your cutting tool lubrication as the CNC controls bring to your machining operations.

The Revolution™ is a reliable, digitally-controlled applicator with support for up to 2 outputs. It features 4 MQL output settings, each at 25% interval of a user-defined max. The Revolution™ controls its intermittent positive-displacement pumps through M-codes, and is appropriate for applications with a limited set of tool sizes/lengths.
Learn more

Not sure what you need for your machine? Contact us!

System comparison

SystemPriceDigitalMQL output levelsContinuous pump

Spec information

Programmable MQL rates4nearly unlimitednearly unlimited
Control from CNC programM-codediscrete signal or serial command setBCD interface or controller symbol table
MQL outputsup to 2up to 6up to 3
Fluid delivery approachintermittent positive-displacement pumpintermittent positive-displacement pumpcontinuous positive-displacement pump
Fluid adjustmentdigitaldigitaldigital
Pump strokefixedadjustablecontinuous
Pump output6 – 400 mL/hr. per output6 – 400 mL/hr. per output5 – 500 mL/hr. per output
Output accuracyfluid and temp.
fluid and temp.
fluid and temp.
Viscosity dependenciesnonono
Ambient temp. dependenciesnonono
Air adjustmentlimited digitaldigital or manualdigital
Air blow-offyesyesno
Tool change air releasenonoyes
Low fluid level sensoryesyesyes
Air pressure sensoryesyesyes
Fluid flow sensorflow/no-flow sensingflow/no-flow sensingmeasurement with
1 mL/hr. accuracy
Error handlinggeneral alarm relay,
alarm on unit
general alarm relay, alarm on
unit, errors sent via serial API
general alarm relay, alarm
on unit, errors sent via
serial API, error status
set for controllers
Reservoir size64 oz. (1893 mL)64 oz. (1893 mL)4.5 gal. (17 L)
DimensionsW – 10.63″ (270 mm)
H – 14.10″ (358 mm)
D – 8.46″ (215 mm)
W – 21.12″ (536 mm)
H – 18.30″ to 25.30″ (465 to 643 mm)
D – 6.56″ (167 mm)
W – 22.60″ (574 mm)
H – 45.20″ (1148 mm)
D – 11.40″ (290 mm)