Key Questions to Ask When Ordering Gang Type CNC Lathe

Author: Vic

Mar. 03, 2026

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Buying a CNC Lathe? Here's What to Know and Consider

When purchasing a CNC lathe, there are several questions to ask yourself before you begin the process. Some of these questions will be quite obvious: how much axis travel do I need? What size chuck should I look for? How many tool stations are on the turret? What is the spindle bore size? Etc.

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However, there are other specifications that are just as important but not always so obvious: what is the maximum swing distance that my work will require? What is the maximum turning diameter necessary for my family of parts? What kind of spindle horsepower and torque will my type of work consume? The first set of questions above is relatively easy to answer, but the second group requires a better understanding of lathes in general.

I am often amazed at the number of highly skilled CNC machinists and operators who can accomplish almost anything on a milling machine, but who are very uneasy and intimidated around a lathe because they don’t really understand the meaning of basic lathe terminology. That is the purpose of this article. I will clarify the meaning and benefit of a few of the “not-so-obvious” features that exist on a typical lathe spec sheet and explain why they might be an important consideration when purchasing a CNC lathe.

Maximum Turning Diameter

A lathe's maximum turning diameter simply indicates the largest size of part that can be turned on the machine – standard-length tooling – without interference or collision with guarding or other machine components. With the X-axis retracted all the way positive, it's the size of part can be turned safely as it relates to X-axis travels of the machine tool.

For example: if you are looking at a machine with a max turning diameter of 16 inches, and the parts that you run on a regular basis are 15 inches in diameter or larger, then you would probably want to look at a machine with a larger maximum turning diameter. Even though, in our example above, the part would technically fit, you must realize that you are running on the very edge of the envelope, and if you had to hang a tool out of the turret farther than normal, you would likely not have enough X-axis travel to accommodate the part.

Maximum Swing

A lathe's maximum swing refers to the largest diameter part that can be spun in the chuck without mechanical interference with guarding, cross-slide, or other machine components located near the chucking area. Depending on the style and design of the machine tool in question, this value could be larger than the maximum turning diameter mentioned above. However, this does not mean that you can turn a part larger than that specified in the maximum turning diameter specification.

Horsepower & Torque

Horsepower and torque of a lathe are obvious considerations when purchasing a new machine, but their necessity may not be so obvious in all cases. If you are running work such as castings and forgings, drilling large diameter holes in steel, or generally turning features on large diameter parts, then horsepower and torque are going to very important, and you should be certain that the machine in question has enough for your application. However, if you are more focused on high production or general turning of small-to-medium sized parts, then spindle RPM may become more important than power in your case.

Just as we have seen in the milling arena over the past several years, high-speed machining is quickly making its way into turning as well. As the technology of turning tooling is advancing, and though the tool coolant options are more prevalent, the principles of cutting shallower but faster are becoming more common. Spindle speed, rapid traverse, and maximum programmable feedrates become much more important than sheer horsepower and torque.

Maximum Turning Length

Very similar to the maximum turning diameter, this specification indicates the longest part that can be turned based on the mechanical limitations and axis travels of the machine tool. Keep in mind that the effective maximum turning length for a particular part can be less than specified by the use of larger or deeper chucks, or tooling that sticks out from the face of the turret farther than what is considered normal. In both cases, you would be introducing the possibility for mechanical interferences, which would restrict the length of the part that could be machined, even though the physical travels and limits of the machine have not been changed.

Learn more about the TM series our general-purpose CNC lathes: https://www.hurco.com/en-us/products/lathes/Pages/TM-cnc-lathe-machine.aspx

Learn more about the TMM series our live tool CNC lathes: https://www.hurco.com/en-us/products/lathes/Pages/TMM-live-tool-cnc-lathe.aspx

Learn more about the TMX series our performance CNC lathes: https://www.hurco.com/en-us/products/lathes/Pages/TMX-performance-turning-center.aspx

Learn more about the MYS series our multi-axis CNC lathes: https://www.hurco.com/en-us/products/lathes/Pages/MY-MYS-mill-turn.aspx

You'll find more helpful resources, such as training videos and webinars, at Hurco Connect.

What You Need to Know Before Buying a CNC Lathe - Tormach

Investing in a CNC lathe is a major step for any shop or maker. Whether you are expanding your capabilities or exploring CNC turning for the first time, choosing the right lathe means balancing cost, capability, and long-term value. This guide outlines the key considerations to help you make a confident decision.

Understand Your Applications
Start by identifying the types of parts you plan to machine. CNC lathes are ideal for turning round components such as shafts, pins, bushings, and other rotational parts. If most of your work involves flat or angular geometries, a CNC mill may be a better fit. Selecting the right platform for your part shapes ensures you get the most from your investment.

Tormach’s lineup includes the compact 8L CNC lathe, the proven 15L Slant PRO, and now the newly released 15LX. The 8L is well suited for prototyping and lighter-duty work, while the 15L Slant PRO handles small to mid-sized production. The 15LX represents the next step forward, offering major increases in power, travel, speed, and control for shops that want more capability in the same footprint. Matching your part mix to machine capability ensures smoother operations from day one.

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Evaluate Machine Footprint and Power Needs
Shop space and electrical requirements are key factors when buying a lathe. Large industrial machines may require three-phase power, special wiring, or reinforced floors. Tormach designs its lathes to be far easier to integrate. The 8L, 15L Slant PRO, and 15LX all run on standard single-phase 220 volt power, which makes them suitable for small workshops, garages, labs, and lean production spaces.

The 15LX maintains a compact footprint similar to the 15L Slant PRO but introduces substantial performance upgrades, including extended Z travel from 12 to 14 inches and a redesigned stand and coolant system for better chip flow and easier cleaning. Ensuring you have room for operator access, material handling, and maintenance is essential for creating an efficient and safe workspace.

Consider Software and Ease of Use: Tormach PathPilot Control System
Control software determines how intuitive your CNC experience will be. Tormach’s PathPilot® control system is known for its clarity, simple layout, and quick learning curve. Built-in conversational programming allows users to create part programs directly at the machine without relying on full CAM software. PathPilot also provides free software updates for the life of the machine.

The 15LX includes a 21.5 inch operator console with integrated WiFi support and an external antenna for improved connectivity. The larger screen and updated console layout make PathPilot even easier to use for setup, programming, and job monitoring. A user focused interface reduces errors and training time, helping machinists stay productive and confident.

The new Tormach 15LX slant-bed lathe.

Introducing the Tormach 15LX Lathe : More Power, Speed, and Capability
Building on the success of the 15L Slant PRO, the Tormach 15LX delivers significant performance advancements for shops that want more capability without moving into the cost and complexity of industrial systems.

The 15LX features a 6 horsepower spindle with a peak output of 10 horsepower, providing the torque needed for heavy cuts in demanding materials. Rapid feed rates jump from 60 inches per minute on the 15L to 360 inches per minute on both axes. Z travel increases from 12 to 14 inches to accommodate a wider range of parts and workholding setups.

A major improvement is the use of absolute encoder servos on all axes and the turret. These servos provide smooth motion, faster and more reliable tool changes, and repeatable positioning. An EtherCAT based control system adds faster communication between components. Standard features include a full enclosure, stand with chip tray, automatic oiler, redesigned coolant system with a washdown hose, and integrated load meters for both spindle and axes.

The 15LX supports turret or gang tooling, automated collet closing, and parts catching capabilities. It also accommodates accessories such as oil skimmers, air guns, and modern gang tooling kits. This combination of power, control, and expandability makes the 15LX a strong option for prototyping, small batch production, and integrated manufacturing cells.

Plan for Tooling and Accessories
Purchasing a CNC lathe is only the first step. Tooling determines how productive the machine can be. Common essentials include turning tools, boring bars, tool holders, chucks or collets, and optionally automation accessories. The 15LX’s expanded capabilities and optional configurations allow shops to build a tooling system that suits their workflow.

Planning tooling early ensures you are ready to cut parts as soon as your machine arrives. Tormach offers a full range of modular accessories that grow with your shop.

Tormach's 8L and 15L lathes.

Factor in Support and Service Costs When Buying Your Lathe
Support quality can make or break your ownership experience. Tormach offers U.S. based technical support staffed by people who work on the same machines they support. Whether you are troubleshooting a program, resolving an installation issue, or dialing in tooling, you receive guidance from someone who understands the machine firsthand.

Tormach also supports Right to Repair, giving users access to documentation, schematics, replacement parts, and the freedom to maintain or modify their machine without restrictive service agreements. This model helps minimize downtime, reduce unexpected costs, and keep shops running independently.

Build for Today, Plan for Tomorrow
As your part mix or business evolves, your CNC lathe should be able to keep pace. Machines like the 8L and 15L Slant PRO offer cost effective entry points with room to grow. The 15LX represents the next step in capability for shops ready for more power and speed without moving into the high costs of industrial equipment.

By understanding your workflow, workspace, control preferences, and part requirements, you can choose a CNC lathe that supports both your present goals and long term success.

If you want to learn more, please visit our website Gang Type CNC Lathe.

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