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Haas SL-20 vs Haas ST-20: What’s the Difference and Which Should You Choose?

Haas is known for producing some high quality CNC lathe machines for different kinds of manufacturers across production volumes. The SL series was one of such series that used to have different high quality lathes but got discontinued later, and the ST series came to the market. The machines of both series have some differences. But both are loved by different manufacturers. Two such machines of both series are Haas SL-20 and Haas ST-20, which are loved by different machining shop owners. But if you want to see the differences between Haas SL 20 vs Haas ST 20, then read this blog till the end.

Top Differences Between Haas SL 20 and ST 20 CNC Lathes:

1. Machine Generation and Series:

One of the major factors to consider when doing a Haas lathe series comparison for SL20 and ST20 is their generation and series specifications. The SL machine is the older one, which got discontinued, and was replaced by the newer ST machine. Because of this difference in generation: 

  • SL20 machines are usually found in the used market with long usage years
  • ST20 machines come from a newer design platform

2. Machine Design and Structure:

The next major difference between Haas SL 20 vs Haas ST 20 is the machine structure and internal layout. The SL machine is made using the older Haas lathe machine architecture. The main focus of these machines is their structure, which is rock solid. The ST model was redesigned with improvements in ergonomics and layout. Some of the major machine design updates include:

  • Updated enclosure design
  • Improved operator access
  • Improved chip evacuation layout
  • A more modern appearance of the machine

3. Control System and User Interface: 

The next major factor that one needs to consider when choosing between Haas SL 20 and ST 20. Earlier models of the SL20 machine are mostly equipped with older versions of the Haas CNC control. The other one is equipped with a modern version of the Haas control system. These newer controls may include:

  • Improved display systems
  • Updated interface layout
  • Updated software capabilities
  • Modern connectivity options

4. Spindle Performance:

One factor that makes a major difference in Haas SL 20 vs ST 20 turning applications is their spindle performance. In a general scenario, both machines are made for similar kinds of turning applications and often fall into a comparable size category. But depending on the machine year and model, ST20 might have advanced spindle configurations compared to the other one. In many cases, buyers will find different similarities like:

  • Similar spindle bore range
  • Similar chuck size category

Now, after knowing the differences of Haas SL 20 vs Haas ST 20, if you want to buy a used Haas SL-20 CNC Lathe,​ then check the collection of MachineStation.

Conclusion: 

Haas SL 20 and ST 20 are both well known CNC lathes, with different high quality features, that are appreciated by manufacturers across industries. Choosing the right one among the two will need a proper analysis of what you need from a CNC machine.

FAQs:

1. What is the main difference between Haas SL-20 and Haas ST-20?

The main difference is that the SL-20 belongs to the older Haas SL series, while the ST-20 belongs to the newer ST series that replaced the SL platform. The ST series introduced design updates, improved layouts, and newer control systems.

Yes, both machines fall into a similar size category. They are designed as compact CNC turning centers suitable for general machining tasks.

Yes, both machines can be configured to work with bar feeders, depending on the machine setup and available options.

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