Gantry Milling Machines & Portal Milling Machines


The 5-axis Gantry milling center is a very large machine that allows machining operations on 5-axis and 5-sides to be carried out in one setup part clamping, from roughing to finishing. It is particularly suitable for large complex parts intended for machining molds, dies, stamping tools, models and precision parts. The choice of fixed Portal architecture makes it possible to offer a machine with maximum rigidity for extremely accurate machining in various and hard materials. The modular design and the many alternatives and equipment offered make it easy to meet all customer requirements.


With the moving gantry, moving table and portal milling design, Hexram takes a simple, rigid design and turns it into a flexible manufacturing platform with a small travel-to-floor space ratio. The Hexram family of machines offers a variety of heads to take on applications from any industry and are built to handle materials from aluminum and stainless to titanium and Inconel.

What Are Portal Milling Machines?

Portal mills are advanced industrial machines utilized in a wide range of manufacturing fields, from the automotive industry to aerospace construction. They are designed to operate on large workpieces with exceptional precision and speed. By employing a portal design, the cutting tool can access the workpiece from several angles, ensuring comprehensive machining.

High-Precision Cutting

One of the distinguishing attributes of these machines is their ability to deliver high-precision cutting. Utilizing precise spindle units and hydrostatic guideways, these machines facilitate fine-cutting operations with an astonishing degree of accuracy. This precision extends to both vertical and horizontal milling operations. Vertical milling machines specialize in plunging cuts and drilling, displaying superior performance when working with longer vertical cuts. The horizontal milling machine, on the other hand, excels in performing broad, shallow cuts and shouldering operations.

What Are Gantry Milling Machines?

Gantry mills are large industrial machines that have a bridge-shaped moving horizontal arm, called a gantry, to which the milling head and spindle are attached. They are often used for large-scale milling projects where an overhead crane feeds large workpieces into the cutter on the gantry, allowing knee-less horizontal milling on a grand scale. Gantry mills can also be equipped with automatic tool changers, rotary tables and multiple axes, allowing them to perform complex milling similar to larger, precise vertical mills, but with the capability of handling bigger parts weighing tons.

What Advantages Our Gantry & Portal Milling Machines Offer

United Precision’s gantry and portal mills offer a wealth of advantages to clients across multiple industries. Our top-of-the-line machines promise superior accuracy, speed and cost efficiency, as well as a range of customizable tooling options.

Superior Accuracy and Precision

Our gantry and portal mills are designed for unparalleled cutting accuracy. With advanced vertical turning machines and vertical machining centers, you can expect premium performance with high precision and repeatability. Our machines are further bolstered with hydrostatic guideways, a system that uses thin oil film to eliminate static friction. This technology reduces the wear and tear on the machine and significantly enhances its life span, ensuring you receive a high return on your investment over time.

Time and Cost Efficiency

Efficiency is a critical factor in any production line, and our portal mills are engineered for optimization. By marrying high-quality performance with durability, United Precision’s equipment delivers results faster and at a fraction of the cost when compared with conventional machinery.

Customizable Tooling Options

We recognize that adaptability is key in a fast-paced manufacturing environment, which is why we offer a wide variety of customizable tooling options. From specialized spindle rebuilds to OEM retrofit services, our solutions are designed to meet your unique needs and challenges.

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Huron KX300 Installation RKM

Huron KXG 30-14

Hexram MG1218