Why More Shops Are Switching to Hirt Line for High-Pressure Coolant Lines

by Bernard Martin

If you've ever fought with rigid coolant lines that never aim quite right—or worse, with plastic nozzles that shift mid-cut or crack from heat—then it's time to take a serious look at the Hirt Line modular coolant system.

This isn’t just another coolant hose. Hirt Line is a stainless steel, leak-proof, high-pressure adjustable coolant system that’s built to survive the realities of modern machining. Whether you're running flood or high-pressure through-the-spindle coolant, these lines give you precise, repeatable, and adjustable coolant control—all without the usual headaches.

Built Like a Tool, Not an Afterthought
Forget plastic nozzles. Hirt Line is machined from 316L stainless steel and can handle pressures up to 1500 psi (100 bar) without flexing, leaking, or shifting under load. Each segment is precisely engineered to click together, allowing you to bend and adjust the coolant flow exactly where you want it—and it stays there. No tape. No clamps. No zip ties. Just a clean, professional-looking solution that does what you tell it to.

Fully Modular, Fully Customizable
You’re not locked into one shape or nozzle. Hirt Line is a true modular system, meaning you can build it to fit just about any machine configuration.

Choose from a variety of:

• Line sizes:
  • Type 0 (1⁄8″) – internal passage ≈ 3.2 mm (0.126″)
  • Type 1 (1⁄4″) – internal passage ≈ 5.8 mm (0.228″)
  • Type 2 (1⁄2″) – internal passage ≈ 11 mm (0.433″)
  • Type 3 (3⁄4″) – internal passage ≈ 19 mm (0.748″)
• Nozzles: round, flat, or even multi-nozzle manifolds
• Mounts and bases: threaded, magnetic, or machine-specific adapters
• Rigid or flexible segments depending on what you’re trying to reach

Want to run multiple coolant lines from one port? Easy. Want to send high-pressure coolant to a deep-pocketed feature without risking tool breakage? Done. The Hirt Line system gives you total control.

Where Hirt Line Really Shines
While you can use Hirt Line for general machining, it really stands out in high-pressure, tight-tolerance, or multi-axis environments— which is where most all other systems fall short.

Some ideal applications include:

• Swiss-type lathes and multi-axis turning centers where nozzle position matters
• High-pressure coolant setups where traditional nozzles leak or fail
• Toolroom machines that need fast, repeatable coolant changes
• Robotic cell integration where coolant must be locked-in and reliable
• Additive + subtractive hybrid machines where heat control is critical

If you’re running custom geometries, special long length tools, deep pockets, complex cycles, or automated production, Hirt Line helps you eliminate one of the most overlooked variables in machining: consistent and controlled coolant delivery.

Why Shops Make the Switch
Here’s what shop managers love most about Hirt Line:

• No adjustments during a run—it stays where you set it
• Lasts for years, not months
• No leaks, even under high pressure
• Looks professional and impresses customers and auditors alike
• Speeds up setups, especially when switching between parts or fixtures

And here's the bonus: It's also reusable. When you move machines or retool your process, you can break down the system and rebuild it to fit your new setup. That’s long-term value built right in.

Want to Learn More?
Visit our Hirt Line page at or contact us at  F&L Technical Sales for a demo. We can help you spec out exactly what your machines need—and make sure your coolant works as hard as your tools do.