Single-shot precision


  • serv-o-spray
    1 signal = 1 shot of lubricant
  • Delivers precise, repeatable shots of lubricant

    With its precision positive displacement pump and individually adjustable air and fluid volumes, the Serv-O-Spray spray lubrication system is the perfect Minimum Quantity Lubrication solution for any operation where controlled, intermittent fluid application is needed.

    • Single-shot precision output
    • Reliable Unist pump
    • Separate air/fluid control
    • Ideal MQL solution - for short-cycle machining

on a Serv-O-Spray system now!

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    • Deliver a fixed amount of fluid with each and every shot
    • Adjustable pumps deliver 0.003 - 0.100 mL per stroke.
    • Pumps are air actuated
    • Easy adjustability and control over spray consistency.
    • Neat, clean fluid delivery - Eliminate the mess of flood coolants
    • Improves cut quality
    • Made for environmentally friendly Coolube®
    • Dry chips - higher recycling value
  • Roll over image for component info

    Roll over image for component info

  • How it works:

    1. The Serv-O-Spray™ pump is ready to dispense a shot of fluid.

      Note: The system is full of fluid (green) all the way to the nozzle tip

    2. When an air signal (blue) is applied, the pump piston strokes, immediately pushing a fixed quantity of fluid out the nozzle tip. Simultaneously, an adjustable amount of air surrounds the fluid to break it up and propel it to the point of application.

  • serv-o-spray pump cutaway

lifetime warranty
Lifetime warranty on Unist pumps
when Coolube® is used exclusively!

Intermittent output

Actuating your Serv-O-Spray spray lubrication system is easy. Every time a compressed air signal is supplied from an actuation valve, the pump will deliver one quick shot of fluid out the nozzle tip along with a controlled amount of air. Air continues to flow from the nozzle tip until the air actuation valve is closed. Each time air is supplied in the spray lubrication system, the pump immediately fires another shot. The pumps can be cycled as often as needed, up to 150 times per minute.

  • coaxial illustration

  • Separate fluid & air

    Our Co-Axial nozzles keep the air and fluid separate right up to the spray tip. This unique configuration can deliver fluid over long distances without the need for excessive amounts of air. Each time the pump strokes, a metered amount of fluid sprays out the nozzle tip, and is immediately atomized by the outer jacket of air. This feature on our spray lubricatoin systems delivers a balanced spray pattern at the point of application.

  • Dial in the "sweet spot"

    The Serv-O-Spray™ was designed for precise control over the fluid application with separate fluid and air volume adjustments. This means that finding the sweet spot for your application is a breeze and once it’s set, the Serv-O-Spray™ spray lubrication system will deliver the same amount of fluid again and again.

  • Serv-O-Spray's modular design

    can be configured for almost any application! Pumps can be actuated independently or in groups to spray multiple points with a single control valve.

Serv-O-Spray applications:


Intermittent output – Delivers repeatable shots of fluid.

Multiple outputs – Actuate up to 16 pumps for 16 individual output options

Air Valve Options – Control air input with Manual Valve, Air Pilot Valve, or 3-Way Solenoid Valve (available in 110 VAC or 24 VDC)

Pump Options – 4 types available:

  • Standard 1 Drop (0.03 mL per stroke)
  • Standard 3 Drop (0.10 mL per stroke)
  • Multi-Viscosity (MV) 1 Drop (0.045 mL per stroke)
  • Multi-Viscosity (MV) 2 Drop (0.10 mL per stroke)
The fluid viscosity will determine the type of Unist pump required:
  • For Coolube® and other fluids between 50 SUS and 1,000 SUS, choose the standard 1 or 3-Drop pump.
  • For fluids less than 50 SUS, choose the Multi-Viscosity (MV) 1 or 2-Drop pump.

videoWatch this video on Unist pump types

Choice of reservoir capacity – 16 oz. (473mL) nylon reservoir standard

  • 10 oz. (296 ml), nylon
  • 16 oz. (473 ml), polyethylene
  • 32 oz. (946 ml), polyethylene
  • 64 oz. (1893 ml), polyethylene

Call Unist:
800.253.5462 Toll-free US & CAN
616.949.0853 Intl.
Need Help? Let's chat!

Need continuous lubrication?

The Coolubricator system features continuous fluid delivery!

View Coolubricator
More Metal Cutting Solutions

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