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Mini-Roller delivers continuous lubrication for thin and narrow coil stock. It is perfect for high-speed presses, small press windows and applications like punching, stamping, four-slide, and roll forming.

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  • Uni-Roller® precision for narrow coil
  • Internally-supplied rollers
  • Consistent fluid application
  • Neat application - No fluid mess!
  • Horizontal or vertical
  • Reduces fluid usage - Saves money!
Technical Specifications

    Stock type:
    • Narrow coil stock

    Stock thickness:
    • .002" - 0.060" (.05mm – 1.52mm)

    Stock width:
    • 0.5" - 6" (12.7mm – 152.4mm)

    Fluid type(s):
    • For use with a broad range of water soluble and neat lubricants. Viscosity from 30 – 1000 SUS. Thicker lubricants can be tested by Unist for compatibility.

    Fluid supply:
    • Pressurized 3 gal (11.4L), 6 gal (22.7L), 15 gal (56.8L), 30 gal (113.6L) tank. Also 20 gal (75.7L) poly tank with diaphragm pump. Also can be integrated into customer’s bulk fluid system

    Applicator material:
    • Polyester felt or polyurethane foam


    • NA (see SPR-2000 or SPR-2000 JR for controller power requirements)

    • Integral mounting flange with thru-holes for #10 bolts

    Options & Accessories

    Roller covers
    Polyurethane foam cover
    Polyurethane foam cover
    Reduces uneven wear on cover when a variety of stock widths and thicknesses are used. Due to limited fluid compatibility, consult Unist.

    Polyester felt cover
    Polyester felt cover
    Extremely durable and compatible with a broad range of fluids.

    Rotation sensor
    Rotation sensor
    Provides an input signal to an SPR-2000™ controller based on roller rotation. Select when an intermittent signal from press not available.

    Supply & Connections
    In-die quick connect
    In-die quick connect
    Allows for permanent spray nozzle mounting to the die. Ensures nozzles remain in correct position with each die change.

    Intelligent stock coating solution

    The Mini-Roller applies the correct amount of fluid for your small press window and high-speed, short feed length applications when combined with a SmartFlow programmable fluid controller. This 1 to 6 in. wide (25 mm to 152.4 mm) unit consistently applies the correct amount of fluid and lets you start saving now.


    • Uni-Roller® precision for narrow coil
    • Internally-supplied rollers
    • Consistent fluid application
    • Neat application - No fluid mess!
    • Horizontal or vertical
    • Reduces fluid usage - Saves money!

    save 50 percent

    Mini-Roller reduces fluid usage and saves money

    On average, a Unist system can reduce stamping fluid consumption by 50% with some customers reporting reductions as high as 90%!

    2 configurations

    Horizontal model uses a fluid controller to inject lubricant into a dispenser tube inside the roller. Small holes in the tube evenly distribute the lubricant along the length of the roller.

    Vertical model uses a baffle positioned inside each of the rollers near the top. Every time the fluid controller injects lubricant into the dispenser tube, the fluid spreads across the baffle and is redirected to the outside of the roller. Gravity pulls fluid down the length of the cover.

    horizontal or vertical mini-roller

    Mini-Roller applications:

    • Small press windows
    • High-speed, short-feed lengths
    • Thin stock
    • Punching
    • Stamping
    • Roll forming
    • Four slide
    • Many other metal forming applications

    Delivers return on investment in less than 6 months

    That's what many of our customers report. By applying the proper amount of fluid, the Uni-Roller® lubricator uses 50 to 90% less lubricant. Plus it decreases the mess, the parts cleaning, fluid recycling and costs associated with in-die spray systems, rag technology and externally lubricated rollers.

    Available widths

    Both vertical and horizontal Mini-Rollers are available in 1" (25mm), 2" (51mm), 3" (76mm), 4" (102mm), and 6" (152.4mm) widths

    mini roller widths

    Available roller covers:

    roller cover materials

    Polyester felt (standard)
    Extremely durable and compatible with a broad range of fluids

    Polyurethane foam cover (optional)
    For use with vanishing oils and with thin stock which is narrow compared to overall roller width. Limited fluid compatibility, please contact Unist before selecting this option.

    The Internally-fed difference

    All Uni-Roller systems feature a unique, internally-fed roller design. This is the key to uniform and efficient fluid application. As illustrated, inside each of the rollers there is a dispenser tube with several small holes spaced along its length. Every time the fluid is injected into the dispenser tubes from the fluid controller, it is dispensed evenly across the inside of the roller through these holes.

    The lubricant is then transferred to the stock through a durable polyester felt or polyurethane foam roller cover. These cover materials apply the lubricant smoothly and evenly across both the top and bottom of the stock. As the system continues to cycle, additional lubricant is injected into the rollers to replenish the lubricant applied to the stock. The advantage of this system is consistent application of the exact amount of lubricant required for any particular operation.

    Uni-Roller smooth consistent stock lubrication coating

    Uni-Roller® systems deliver smooth and consistent lubrication.

    Take control with the SmartFlow

    The SmartFlow alerts you to issues before they become expensive problems that interrupt or stop your production lines. With the SmartFlow you'll know immediately if the fluid supply runs low, if fluid pressure varies, or if flow to the applicator is interrupted (Level, pressure, and flow sensors required). The SmartFlow features an intuitive, easy-to-use interface as well as an access code to prevent unauthorized tampering or changes in fluid settings.

    SmartFlow programmable fluid controller
    • Monitors critical parameters
    • Controls up to 22 outputs
    • Stores up to 250 setups
    SmartFlow touch screen

    Easy to use touch screen interface.

    The SmartFlow controller can monitor pressure, flow, valve performance and line status.

    Job setup wizard makes job creation easy.

    Changing Roller Covers (Mini-Roller)

    Changing Roller Covers (Mini-Roller)
    A how-to video explaining how to change roller covers in a Mini-Roller™ stock lubricator.

    MF Minute #1 Uni-Roller Systems Overview

    MF Minute #1
    In this Metal Forming Minute, John and Mark provide a basic overview of the Uni-Roller® line of stock lubricators.

    MF Minute #2 Unist Mini-Roller

    MF Minute #2
    In this Metal Forming Minute, John and Mark discuss Unist's Mini-Roller™ stock lubricator for narrow coil.

    MF Minute #3 SPR-2000 Fluid Controller

    MF Minute #3
    John and Mark discuss the SPR-2000™ programmable fluid controller.

    MF Minute #4 Adequate Stock Lubrication

    MF Minute #4
    John and Mark discuss the importance of adequate stock lubrication.

    Testimonial Video - Grant Industries Customer Grant Industries discusses their Unist Uni-Roller system.

    Testimonial Video - Grant Industries
    Customer Grant Industries discusses their Unist Uni-Roller system.

    Using the SmartFlow<sup>™</sup> to prime the Uni-Roller<sup>®</sup> S2 This video shows you how to prime your Uni-Roller<sup>®</sup> S2 using the SmartFlow<sup>™</sup> controller.

    Using the SmartFlow to prime the Uni-Roller® S2
    When using a Uni-Roller®, properly priming the rollers is an important start up task. Watch this video to learn how the SmartFlow walks you through priming rollers.

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