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Haas ST-20 vs Haas ST-30 - Understand the Difference

Haas ST series features several top quality CNC turning center machines, which have different specifications and are fit for different machining works. In this lineup, there are two machines, which are the Haas ST-20 and Haas ST-30, which are widely loved and appreciated by their users. The machines are used in several manufacturing shops across the world and are in high demand, even in the used machine market. However, these two machines also have some differences between them. To understand the differences between the Haas ST-20 vs Haas ST-30, read this blog to the end. 

Top Factors of Haas ST-20 Vs ST-30 CNC Lathe Comparison:

Here are some of the major factors that can help you to choose between Haas ST-20 vs Haas ST-30 as the right lathe for your machining shop:

1. Work Envelope

One of the first differences between the CNC machines that you need to know is the work envelope of the machines. The ST-20 CNC machine is a more compact one, with a smaller work envelope, but its smaller size will be beneficial for small and mid sized manufacturing shops. 

On the other hand, the Haas ST-30 is designed for larger diameter turning works. But you should choose the ones that fit your regular machining diameter needs.

2. Bar Capacity

The next factor that we need to consider for the Haas ST20 vs ST30 comparison is their respective bar capacities. The ST-30 CNC turning center supports a larger bar capacity compared to that of the ST-20, and you should buy the one that matches the bar capacity your raw workpiece needs to avoid any unnecessary secondary machining. 

Also, you can check the sub variants of the machines, like SSY variants, for better bar capacity.

3. Spindle Power and Speed 

The next, and one of the most important factors of Haas ST-20 vs ST-30 performance comparison, is the spindle power and speed of the respective machines. When talking about speed, the Haas ST20 gets an edge over the ST30 as the former has a spindle speed of 4000RPM while the latter has 3400.

But the ST-30 also comes with more torque at lower speeds, which helps in machining of tougher elements.

4. Machine Rigidity and Weight

The next factor one needs to take into account for Haas ST-20 vs Haas ST-30 is the weight and rigidity of the CNC machines. The Haas ST20 is a significantly lighter machine compared to the ST30 model, making it an easier choice for small shops and hobbyists. 

But the ST-30’s added mass also gives it more rigidity, which makes it more suitable for heavier machining works that need better vibration damping qualities.

5. Control System and Automation

Last but not least, one needs to consider the control system and automation capabilities of the CNC machines. Both the machines feature the proprietary control system of Haas, and are very easy to learn and use from the operator’s perspective. 

Both machines are also very open to different automation system integration, like the Haas bar feeders and automatic parts loader. 

Now, if you have made up your mind to go with the Haas ST-20 after reading the comparison, then check out the different Haas ST-20 for sale in MachineStation’s collection.

Conclusion: 

Both the Haas ST20 and Haas ST30 are good lathes, but they are made for catering to different purposes and different machining shops. The ST-20 is more suitable for smaller shops, while the ST-30 can help the bigger ones. So, you must make the choice after understanding your needs properly.

FAQs:

1. Which machine is more suitable for small CNC shops?

For shops with limited floor space or focused on smaller parts, the ST-20 is often easier to integrate. The ST-30 generally requires more space and is better suited for shops handling larger components.

Yes, both the ST-20 and ST-30 are offered in long-bed (L) variants, providing increased Z-axis travel for longer parts.

Resale demand depends on regional market needs. ST-20 machines often appeal to job shops focused on smaller parts, while ST-30 models attract buyers needing higher capacity and flexibility.

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