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Things to Check Before Buying a Used Haas ST-20 CNC Lathe

A Haas ST20 is one of the finest CNC turning center machines that one can find in the market. This particular turning center machine is used by several manufacturing shops across the world. But buying a new model of the machine can become a financially tough decision for small to medium sized shop owners. So, buying a used machine instead of a new one becomes a wiser option for most of the shops in this case. 

But buying a used machine is also not an easy thing to do because you need to check several things and make sure you are buying it from the right platform, before the purchase. Many buyers do that wrong. So, in this article, we will discuss with you the top things to check before buying a used Haas ST20 for a good purchase.

Major Things to Check Before Buying a Used Haas ST-20 CNC Machine:

Here are some of the main things that should be in your used Haas ST20 inspection checklist:

1. Confirm the Machine’s Specifications:

One of the first steps to take is to confirm the machine’s specifications before making the purchase. The model can have different specifications depending on the year. Also, there are variations of the machines like Haas ST20SSY, which will be able to provide you with different machining capabilities. So, one needs to carefully check which machine they’re looking for and what its specifications are.

2. Spindle Health:

One of the major things to check before buying a used Haas ST-20 CNC machine is the condition of the spindle of the machine. Try to get a noise check of the spindle as that’s a reliable way to do Haas ST-20 spindle health check. Absurd noises from the spindle, like whining or grinding, might be a symbol of some kind of problem with the CNC machine. 

3. Examine Way Covers and Linear Guides: 

The linear guideways are a major factor for proper machining with the right speed and precision. The rails are generally durable unless chips get under the covers. If sliding the z-axis back and forth is making noise, then there might be some issue with the way the cover is, which you should take into consideration.

4. Check for Backlash:

Backlash is the lost motion when an axis reverses direction. Check the condition of the ballscrew by observing axis reversal and listening for noise during the movement. While a bit of backlash compensation is normal in old CNC machines, but if it is creating a lot of noise and chatter, then that may indicate wear.

5. Control System Version and Software Compatibility: 

One of the most important points that needs to be included in your Haas ST-20 inspection checklist is the version of the control system and its compatibility with the software. Check whether the machine has older generation Haas control systems or features the newer Next Generation Control (NGC). Also, make sure to know about the current software version and whether it has been regularly updated.

6. Inspect the Electrical Cabinet: 

Next, you need to inspect the electrical cabinet of the CNC machine. Any kind of problem there can cause major issues and create hazards for the operators. Inspect all the wearings are in a proper condition without any signs of wear and tear. Also, ask about the condition of the motors for a better understanding before purchasing the machine.

7. Verify Documentation and Service Records: 

Last but not least, one needs to do a Haas ST-20 maintenance history review before making the purchase. Find out what servicing has been done and what parts have been changed in the machine, and then go ahead with the purchase. 

If you are looking to buy this CNC machine, then we suggest you take a look at the collection of used Haas ST-20 CNC machines of MachineStation.

Conclusion: 

Haas ST20 is a reliable CNC turning center machine that can be used by different manufacturing shops. Buying a used one will only help you get this reliable machine at an affordable price.

FAQs:

1. Is a used Haas ST-20 suitable for small to mid-size production shops?

Yes, many buyers consider the Haas ST-20 when they need a CNC lathe that fits moderate part sizes and common turning applications without requiring a large machine footprint.

No, C-axis and live tooling are optional configurations. Buyers should confirm whether these features are installed and factory-enabled on the specific machine.

Availability is one reason many buyers consider Haas machines, but access to parts and service can still vary by region and machine age.

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