At FlexTrades, we deliver workforce solutions to American manufacturers. That means solving complex problems, answering tough questions, and helping our clients and technicians understand the tools of the trade. One question that comes up more often than you’d think:

What’s the difference between a VTL and a VBM?

Let’s break it down.

VTL vs. VBM: A Simple Answer to a Confusing Question

Both Vertical Turret Lathes (VTLs) and Vertical Boring Mills (VBMs) are large-scale machining tools used to shape metal, typically for aerospace, energy, and industrial components. And yes, they’re very similar. In fact, so similar that they’re often confused for one another.

Here’s the key difference:

A VTL is essentially a VBM… but with a turret.

That turret adds a layer of versatility and automation that the traditional VBM doesn’t offer.

Why the Confusion?

VBMs have been around longer, but they don’t get talked about as much these days. The term “VTL” is more widely used in modern machine shops, even when the equipment is technically a VBM. And since many VBMs can perform basic turning operations, the lines between the two blur even further.

So while both machines operate on a vertical axis and use similar base designs, it’s the tool turret that sets a VTL apart.

What the Turret Brings to the Table

A VTL’s turret offers key performance advantages:

  • Threading Capabilities: Built-in turret tools can perform internal and external threading without manual changeover.
  • Shorter Setup Times: With tools preloaded in the turret, there’s less downtime between steps.
  • Fewer Tool Changes: Less manual intervention means faster cycle times and more consistent results.

These benefits all add up to one thing—efficiency. More productivity, less downtime, and better ROI for shops running high-volume or complex parts.

Which One Should You Use?

It depends on the job.

  • If you’re machining large, simple parts with minimal tool changes, a VBM may be all you need.
  • If your projects involve complex profiles, threading, or frequent tool changes, a VTL will likely deliver better performance.

The right machine is the one that fits the part, the budget, and the timeline. And the right technician? That’s where FlexTrades comes in.

Looking for Talent or Opportunities?

Whether you’re a manufacturer needing skilled machinists or a technician ready to work on high-end equipment like VTLs and VBMs, FlexTrades can help.