Wouldn’t it be great if you could buy one piece of equipment that could machine everything equally well? One with the spindle speed needed for efficient aluminum cutting, but enough power to hog out a big block of Inconel?

In reality, the quest for such a wonder machine tool often leads shops to overbuy—selecting products with greater travels, power, and capabilities than their workload demands.

On the flip side, some shops regret a capital equipment investment that comes up short. Instead of buying the machine they really wanted, they pinched pennies, only to suffer from its poor performance and dependability.

Right-Sizing Your Capital Equipment Investment

There’s no doubt about it. The decision to make any capital equipment investment is a big one. Granted, it’s not on the level of saying “I do” or signing a long-term mortgage. Even so, it’s a commitment that will affect cash flow, capacity, and competitiveness for years.

And no offense to the penny-pinchers out there, but buying on price alone is sure to bring disappointing results. That’s just a true for a knee mill or CNC lathe as it is for a delivery vehicle or that fishing boat you’ve always wanted. After all, the wrong gear means an empty stringer.

Capital Equipment Investment Basics

For starters, make a list. Call it “This is everything we need for our next machine tool.” Don’t take a pie-in-the-sky attitude and think about what you might need in five years. Instead, focus on the here and now. First off, determine the maximum part size the machine will be asked to process. The same goes for the materials you’ll be cutting.

What spindle taper does your shop mostly use, whether CAT40, BIG-PLUS, or HSK? How much spindle speed do you need? What are the torque requirements? For job shops, it’s no good having a 30,000 RPM spindle if you don’t have the oomph to cut steel or superalloys.

Will you be using any heavy tools? Regardless of ATC design, the tool changer must be sized for your largest toolholders—not just the tools you run most often.

Long After the Ink has Dried

There’s plenty more. What are your accuracy requirements? How about repeatability. Don’t just look at rapid traverse rates, but rather chip-to-chip time. How about the machine’s duty cycle and heat management. What controls are your people familiar with?

Perhaps most important is support. Find a machine tool partner who will be with you years after the ink on the purchase agreement has dried. If you’d like some advice on this and more, reach out to Kent USA. We have decades of experience and are well-equipped to guide you down the capital equipment investment road, even if you end up buying elsewhere. Happy shopping!