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Used CNC Mills For Sale

How to buy a used CNC vertical milling machine or horizontal milling machine

The CNC mill is still one of the most common ways to manufacture metal parts. The most common CNC mill machines are the vertical machining center and horizontal machining center. We have over 150 CNC mills listed with the prices on CNCMachines.Net including vertical machining center (VMC) and horizontal machining center (HMC) that can help you upgrade your shop’s technology and increase the overall output of your manufacturing production. Our in-house service center ensures that quality used milling machines are ready to be put to work in your shop as soon as possible.

Come take a look at all our current listings of vertical and horizontal CNC machining centers ranging from 3-axis small CNC mills to 5-axis milling machines, short to long travels, and fast to heavy-duty RPM spindle speeds. We carry many brands including Citizen, DMG/Mori Seiki, Doosan/Daewoo, Fadal, Ganesh, Haas, Hitachi Seiki, Hurco, Makino, Mazak, Milltronics, Okuma, Samsung, OKK and other brands.

Our used CNC mill experts can answer all your questions to help you determine the perfect used CNC milling machine that best fits your needs. Research different makes and models of all our Used CNC Mill

Researching the Perfect CNC Mill Machine?

Our website is updated daily. We only promote current listings from either our inventory or machine shops using our services to market their equipment. Contact one of our CNC experts to see which machines are going to fit your needs. This way they can keep you updated with milling machines that will be coming up in the near future. Our team is constantly working on bringing more used CNC Mills to the market and can let you know about the next wave of used CNC machines coming available.

15 Check Points – How To Buy A Used CNC Mill:

  1. Inspect for damage and worn components and components.
  2. Call the CNC mill manufacturer to see if they still support parts and service.
  3. Research the brand and model online and with other CNC mill owners think about the brand and support.
  4. Call the local distributor and talk with sales and service about support.
  5. Look up independent CNC service techs to get their opinion if the machine breaks or needs work.
  6. Search online similar year makes and models to see price points.
  7. Get the hours of operation.
  8. See if any maintenance records can be found or major repair work. Repair work isn’t a bad thing, in many cases it will help you know what been replaced, what hasn’t and if it was done right.
  9. Find out the types of material and industries it made parts for in the past.
  10. Ask the owner why he’s selling the machine.
  11. Find out what process controller is on the machine. For older machines, the processor may have been upgraded.
  12. Consider tool-access, how long will it take to switch out tools?
  13. Review chip & coolant management options
  14. Consider the ergonomics of the machine
  15. Find out the electrical requirements for install

For CNC Mill machines that are similar:

  • Compare the horsepower
  • Compare acceleration/deceleration rates which is usually the inches per minute (imp)
  • Compare tool-change time (chip to chip)
  • Compare torque
  • Compare spindle-speed

Choosing between a Used Vertical Machining Centers and a Used Horizontal Machining Centers

Used Vertical Machining Centers

Vertical milling machines are more common than horizontal milling machines in part because of their cost and ease of use. With vertical milling machines you can see more of what you’re doing than with a horizontal milling machine. They tend to be less complicated to program and offer more flexibility, so they are better if you have unorthodox pieces of one-off needs. Another advantage is that they require less floor-space than a HMC.

Vertical milling machines are usually for smaller parts and the super-size parts are made on horizonal machining centers. Because of the ever-increasing complexity and features being added to both kinds of machines, both kinds may be referred to as “machining centers.” Most CNC milling machines have the ability to move the spindle along the Z-axis with allows for freedom to engrave and make much more complex parts.  When a fifth axis is added, making the machine a “5-Axis” machine, the B axis controls the tilt of the tool to make extremely complicated geometries. Most selections for CNC milling machines begin with the size parts you plan to machine.

Some of the benefit of Vertical Machining Centers include:

  • You can see what you’re doing. Horizontal milling machines generally have a blocked view.
  • VMC’s are less expensive than HMC’s.
  • Vertical Machining Centers tend to be easier to program than Horizontal Milling Machines
  • Vertical milling machines tend to be smaller

Used Horizontal Machining Centers

Even though from the list above, a VMC may seem to be the answer, it’s not that simple. One horizontal milling machine can be as productive as three vertical milling machines. The spindle utilization on an HMC is 85% compared to a typical 25% for a VMC. The Horizontal machining center uses better chip evacuation methods when compared to vertical mills, which means less re-cutting and longer tool life. The surface finish from a horizontal mill machine is often better too. These machines are very sturdy and built to withstand vibrations, so the work environment is quieter, and the machine tends to last longer. Many owners believe that the additional initial investment in an HMC well-worth it since parts are less costly coming off the machine. Depending on the project, it might make sense to buy an inexpensive used HMC and use it exclusively for production. There is software available to help you program and run it to its full capacity.

Benefits of used horizontal machining centers include:

  • Higher production rate
  • Quieter running
  • Better surface finishes
  • Better chip management
  • Better spindle utilization (more efficient)
  • Fewer operators (but they need to be well-trained)
  • Pallet change options available for automated loading/unloading

If you have access to the talent to run a horizontal machining center and associated programs (like CAD/CAM), consistent mid-to-high runs of parts and the capital to invest, a horizontal milling machine may be the best choice for you. However, if you are just getting started with machining, have many varied jobs for a wide range of parts and tend to make smaller parts you’ll probably want to select a used vertical milling machine.

5-Axis Machining Centers: Comparing Vertical Machining Centers and Horizontal Machining Centers

For complex geometries that are high-volume and require precision as well as great flexibility, you may want to consider a 5-axis machining center.

5-axis HMC’s have up to 95% spindle utilization and run overnight and weekend unattended, putting money directly in your pocket. Different HMC’s are designed for various size parts and types of materials.

5-axis VMC’s reduce cycle times and add to the complexity of parts that can be produced. As with the HMC’s some are designed for tougher materials than others. The VMC’s tend to be for smaller parts as compared with the HMC.

If you are ready to buy a used CNC mill, we are a leading expert in used CNC mills for sale and have a wide variety of years and sizes available. We would love to help you find the perfect CNC machine for your shop. Contact one of our used CNC Mill experts today for more details: 844.262.6789.