The Uni-Max® ST from Unist is a compact minimum quantity lubrication (MQL) system designed to deliver a precise and repeatable amount of lubricant directly to the cutting zone.
Ideal for straightforward metal-cutting applications, the Uni-Max® ST provides continuous or shot spray lubrication through one or two nozzle outputs, helping reduce lubricant consumption, eliminate the mess associated with flood coolant and maintain consistent machining performance.
Minimum Quantity Lubrication replaces conventional flood coolant with a very small, precisely controlled amount of high-quality lubricant applied directly at the interface between the cutting tool and workpiece.
Rather than cooling the process after heat has been generated, MQL reduces friction at the cutting edge and minimizes heat generation. The result is a cleaner machining environment with less fluid consumption while maintaining excellent tool and machining performance.
The Uni-Max® ST makes these benefits accessible in a simple, reliable system designed for applications requiring one or two lubrication points.
Positive-displacement pumps deliver a controlled quantity of lubricant with each stroke for consistent output, regardless of changes in temperature or lubricant viscosity.
Uni-Max® pumps are tested to 12 million cycles, providing dependable performance for long-term use in machining and sawing applications.
Self-priming pumps, quick-connect tubing and straightforward system components simplify installation, operation and routine maintenance while helping keep the work area clean.
Every machining process has different lubrication requirements. The Uni-Max® ST can be configured for either continuous spray or shot spray operation.
In continuous mode, the pumps cycle while the system is actuated, maintaining a steady supply of lubricant to the cutting zone. This configuration is particularly well suited to continuous operations such as:
In shot mode, the system delivers a controlled number of pump strokes when actuated. This allows a precise quantity of lubricant to be applied exactly when required. Shot spray is particularly well suited to intermittent operations such as:
The operating mode is selected when the system is configured and cannot be changed in the field.
Positive-displacement pumps provide precise, repeatable lubricant output. Uni-Max® ST pumps are available in 20, 40 and 60 µL output configurations, with adjustable or fixed output depending on the system configuration.
The pumps are designed to draw lubricant even when air is present in the inlet line, helping provide hassle-free start-up and reliable operation.
Push-to-connect tubing makes nozzle installation and replacement quick and straightforward.
The Uni-Max® ST is suitable for a wide range of machining and cutting operations, including:
Controlled lubrication helps eliminate the mess associated with flood coolant while providing lubricant directly to the blade.
The system can be integrated with saw actuation to provide lubrication during the cut, helping extend blade life and reduce galling.
One or two nozzles can provide controlled lubrication around the cutting tool for cleaner cuts, improved surface finish and minimal cleanup.
Shot spray configurations can apply one or more precise quantities of lubricant during each cycle, helping eliminate manual lubrication and improve tool life.
Precise MQL delivery reduces friction at the cutting edge while producing chips that are significantly cleaner than those produced with conventional flood coolant.
Other applications include broaching, friction drilling and foam cutting.
| Technical specifications | Uni-Max® ST | |
|---|---|---|
| Number of outputs | 1–2 | |
| Spray modes | Continuous or shot | |
| Pump output and max cycle rate | 20µl: 300 mL/hr, 250 cycles/min* 40µl: 600 mL/hr, 250 cycles/min* 60µl: 900 mL/hr, 250 cycles/min* |
|
| Fluid supply | Reservoir dependent | 16–64 oz [473–1893 mL] |
| For systems with a pressurized fluid supply | clean, filtered fluid, 15 psi [1.0 bar] max | |
| Typical airflow | 1–2 SCFM [28–56 L/min] per air/oil output | |
| Maximum airflow | 4.7 SCFM [131 L/min] per air/oil output | |
| Pump timer (pneumatic pulse generator) | Recommended: 5-50 pulses/minute Maximum: 200 pulses/minute (not recommended for continuous operation) |
|
| Pump timer (electronic Pulse R™) | Recommended 5-50 Cycles per minute (Modes 1 & 2 on the Pulse R™) Maximum: 250 cycles/minute |
|
| Operating temperature | 32°-122°F (0°-50°C) | |
| Storage temperature | 4°-158°F (-16°-70°C) | |
| Fluid viscosity range | Fluids between 30–5000 SUS | |
| Supply air pressure | Clean, dry compressed air, 80-100 psi [5.5-7 bar] | |
*Cycles per minute based on Coolube® 2210. Consult us for other fluid viscosities
For optimum MQL performance, the Uni-Max® ST can be paired with Coolube®, Unist's lubricant specifically formulated for minimum quantity lubrication applications. Coolube® creates a durable lubricating film at the cutting interface to reduce friction and heat while helping improve tool life and surface finish.
Uni-Max® ST systems are covered by Unist's standard one-year product warranty. When Unist lubricants are used exclusively in the system, the pumps qualify for Unist's Lifetime Pump Warranty.
Every machining process has different lubrication requirements. The appropriate pump output, spray mode, nozzle configuration, reservoir and control method depend on your machine, material and operation.
Choose between a consistent continuous spray or individual shots of lubricant according to the application.
Choose a full enclosure or chip guard to help keep system components clean and protected from chips and debris.
Control pump cycles per minute with a pneumatic pulse generator or electronic Pulse R™ pump timer.
Choose from a wide range of Unist MQL nozzles to match the spray pattern, mounting requirements and specific application.
Available with 16 oz [473 mL] or 64 oz [1.89 L] reservoirs. An optional low-level sensor is available with the 64 oz reservoir.
Actuate the system using an air pilot, solenoid or manual valve to suit the machine and application.
An optional tamper-proof keyed lock helps prevent unauthorized access to system adjustments.
Optional magnetic mounting allows the system to be easily attached and repositioned on suitable magnetic surfaces.
