Thinking about buying a press brake, looking for some advice

I do fabrication work part time at my home shop as a hobby, with the occasional paying job that supplements my racing habit. In the past six months or so I picked up a customer that started off with a few small projects that have steadily increased in size and frequency. My most recent project includes a cabinet fabricated from 14 gauge mild steel, which has not been a fun thing to do with my apron brakes. They're rated for 14 gauge, but that's with the angle installed, so you lose the capability to do return flanges. It's also not fun to operate a box and pan brake at full capacity...stuff that's easy in 18 gauge is a challenge in 14. Assuming I keep him happy, it's likely more work of this nature is coming my way, plus the added capability wouldn't hurt on my own projects and might allow me to find some more outside work.

So, I have started doing some research on press brakes. Being that this is a sideline for me, I'm definitely going to be looking at used equipment. In the limited research I've done so far, it looks like a DiAcro 14-72 would be about the ideal machine for my application. I'm not looking to do huge quantities of heavy stuff, but the 35 tons would give me the ability to do limited amounts of 10 gauge or 3/16" for brackets and the like, as well as 14 gauge full width. I certainly would not turn down a 16-72 or 14-48 if I happened across one, either. I like the idea of the hydro-mech system on the DiAcro brakes, it seems like a good blend of hydraulic and mechanical characteristics.

Now I'm looking to answer some questions, like:

1. Are there other brakes out there I should be looking at besides DiAcro? I have seen a couple mechanical Niagara's and Wysong's with similar capacity. I doubt a real modern brake is going to fit in my price range, which is definitely less than $10K, and probably closer to $5K.

2. Since I'm buying used, what do I need to look for in a used press brake to tell if it's worth buying or not? I have quite a bit of experience with my apron brakes and jump shear, but I've never run a press brake beyond the attachment I've made for my press. It sounds like the DiAcro system is prone to leaks at the hydraulic motor that are annoying but not terminal. Are there other quirks with these that I need to watch for? What are signs of guaranteed abuse that mean I should keep looking for another machine?

3. How tough are these to move? It looks like a 14-48 DiAcro is about lbs and a 14-72 is closer to . Obviously there's a fair amount of that weight up high. I have moved both of my apron brakes (big one is a 10' x 14 gauge Chicago) and my 8' jump shear, as well as my mill and lathe, so I have a clue about moving equipment, but a press brake appears to be a whole different animal.

Thanks in advance for reading, and any advice you might have for me.

dkmc, I've read your thread. The frame with fork pockets sounds like a good thing. Does your brake seem reasonably well balanced when you move it? That's the biggest issue with my shear...with the back gauge on it, it's not only top heavy, but rear-heavy, making it tough to balance when putting skates under it. It sounds like a 14-48 would move reasonably easily with a pallet jack on your frame setup.

I would say yes, reasonably balanced, but then again, it doesn't matter as much with the fork pockets.
I've gone over uneven spots with it on the forks, and had it
'clang' a bit IN the pockets....somewhat UN-nerving, but
it stays captured nicely. I'm also probably a bit overconfident and reckless when moving it as a result...
Most times I put at least a 1" ratchet strap around the top and around the mast too. Going carefully with a helper steadying it on a pallet jack should be NO problem.

My very old Niagara 8ft x 16ga shear......whole different
animal as you say. The couple times I've moved that SOB even a short distance it caused me more stress and extended bullshit than any other machine in the shop.
Way top AND rear heavy, and every time it clears the ground you're sure it gonna crash. I end up with all sorts of chains and 2" straps around it to keep it from 'rolling' on the forks.
And then it still likes to 'slip' sideways and be all unpredictable!

What that shear REALLY needs is some sort of frame underneath to keep it from flexing, and as a lifting point. I do not want to have to shim and level it, and bolt it down to my old uneven barn floor. I'm trying to decide what to use for the frame. 4" or 6" U channel? Has to be stiff corner to corner so the legs of the shear don't twist. Hum....I'm starting another thread on this right now!

Curious question: What type of racing??

A press brake is a crucial investment for any metal fabrication shop. Whether you’re upgrading existing equipment or purchasing one for the first time, selecting the right press brake can significantly impact your productivity, precision, and profitability. To make an informed decision, here are seven key factors to consider before buying a press brake.

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1. Determine Your Bending Needs

The first step in choosing a press brake is understanding your specific bending requirements. Consider:

- **Material Type and Thickness:** The press brake's tonnage capacity should accommodate the materials you work with, from aluminum to high-strength steel.

- **Bend Length:** Ensure the press brake's bed length matches the maximum width of your material.

- **Complexity of Parts:** For intricate bends or multiple operations, a machine with advanced features or additional tooling may be necessary.

Clearly defining your bending needs ensures you choose a press brake suited to your operations.

NC Press Brake

2. Choose the Right Type of Press Brake

Press brakes come in various types, each suited to different applications. Common options include:

- **Hydraulic Press Brakes:** Known for their reliability and precision, ideal for heavy-duty and high-volume work.

- **Electric Press Brakes:** Offer energy efficiency, faster operation, and precise control, suitable for lightweight and high-speed tasks.

- **Mechanical Press Brakes:** Provide consistent results for simpler applications but may lack the flexibility of modern models.

- **Hybrid Press Brakes:** Combine hydraulic and electric advantages, balancing power with efficiency.

Evaluate the pros and cons of each type based on your production needs and budget.

3. Evaluate the Tonnage Capacity

The tonnage capacity of a press brake determines its ability to bend materials of varying thicknesses. Calculate the required tonnage using these factors:

- Material type (e.g., mild steel, stainless steel)

- Thickness and length of the sheet

- Desired bending angle

Opt for a press brake with slightly higher tonnage than your maximum requirement to avoid overloading the machine and ensure long-term performance.

4. Assess Control Systems

The control system plays a significant role in the precision and ease of operation of a press brake. Modern systems offer features like:

- **CNC (Computer Numerical Control):** Allows for precise programming and repeatability for complex tasks.

- **Manual Controls:** Suitable for simple operations but require more operator expertise.

- **Touchscreen Interfaces:** Enhance usability and reduce setup time.

Choose a control system that aligns with your operators' skill levels and production complexity.

5. Consider Tooling Options

Tooling directly affects the quality and versatility of your press brake. Look for:

- **Standard vs. Custom Tooling:** Standard tools are cost-effective, while custom tooling is essential for unique applications.

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The Benefits of Polyaspartic Acid: The Versatile Polymer Solution

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- **Tool Material:** Hardened steel tools are durable and ideal for high-strength materials.

- **Quick-Change Tooling:** Reduces downtime during tooling changes, improving productivity.

Investing in high-quality tooling ensures consistent results and extends the life of your press brake.

6. Space and Installation Requirements

Consider the available space in your workshop and the press brake's size and weight. Ensure:

- There’s sufficient clearance for material handling and operator access.

- The flooring can support the weight of the machine.

- Adequate electrical supply and ventilation are available for optimal operation.

Proper planning prevents installation issues and ensures seamless integration into your workspace.

7. Budget and After-Sales Support

While price is a crucial factor, prioritize value over cost. Compare machines based on:

- **Initial Purchase Price:** Include optional features and tooling in your calculations.

- **Operating Costs:** Factor in energy consumption and maintenance expenses.

- **Warranty and Support:** Choose a manufacturer offering robust after-sales service, including training, technical support, and spare parts availability.

A reliable supplier ensures your investment delivers consistent returns over its lifespan.

FAQs About Buying a Press Brake

Q1: What is the difference between a hydraulic and an electric press brake?

A: Hydraulic press brakes offer more power and are suitable for heavy-duty applications, while electric press brakes are faster, energy-efficient, and ideal for lighter tasks requiring precision.

Q2: How do I calculate the required tonnage for my press brake?

A: Use a tonnage chart or formula based on material type, thickness, bend length, and angle. Manufacturers often provide tools to help with this calculation.

Q3: Can a press brake handle multiple materials?

A: Yes, but ensure the machine's tonnage and tooling are compatible with the range of materials you plan to work with.

Q4: How often should a press brake be serviced?

A: Regular maintenance depends on usage but typically includes monthly inspections and annual professional servicing to ensure optimal performance.

Q5: Are there financing options available for purchasing a press brake?

A: Many suppliers offer financing or leasing options to help businesses manage the upfront costs of a press brake.

Conclusion

Choosing the right press brake requires careful consideration of your bending needs, machine type, tonnage capacity, control systems, tooling, space, and budget. By evaluating these factors and partnering with a reliable supplier, you can invest in a press brake that enhances your production capabilities and ensures long-term success.