Modular coolant lines that hold their aim — 216 components in stock at FM Carbide
A Hirt Line assembly is built from sealed ball-joint segments clamped by screw nuts. Loosen the nut and the line articulates freely, so you aim the coolant by hand; tighten it and the joint seals and stays where you put it, through the vibration of a full production run. That is the difference from the flexible plastic coolant hose most shops start with: those need re-aiming, and eventually they stop holding position altogether.
Every Hirt Line system works the same way. What changes between them is the flow size, which is what sets how much coolant you can put on the cut. Pick the system from the supply you have and the volume you need, then build the line from elements in that system.
| System | Thread size | Flow size | Typical use | In stock |
|---|---|---|---|---|
| Typ 0 | 1/8" | 3.2 mm | Swiss and small turning centers, tight envelopes, single-point misting | 25 parts |
| Typ 1 | 1/4" | 5.8 mm | The general-purpose size: VMC and lathe work, most retrofits | 93 parts |
| Typ 2 | 1/2" | 11 mm | Heavy roughing, flood cooling, wide flat-jet nozzles, manifolded lines | 68 parts |
| Typ 3 | 3/4" | 19 mm | Large machines, chip flushing, washdown and high-volume delivery | 30 parts |
If two sizes both work, take the larger one: a bigger flow size can always be throttled at the nozzle, and reductions are available in both directions if you need to step a heavy supply down to a finer nozzle.
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Three parts make a working assembly, and the rest of the catalog exists to shape it:
Beyond those: elbows, T-pieces, Y-pieces and star pieces to branch or turn without adding length; screw nuts and spanners; ball valves to shut off one branch without stopping the pump; manifolds with blanking plugs; cap pieces and seal plugs; reductions between systems; and plastic nozzles where a metal one would mark the part.
If you are putting a Hirt Line on a machine for the first time, the basic set is the efficient way in. Each one contains enough elements, adapters and nozzles to build a complete working line, plus the two spanners that fit it, and the assembly is rated to 100 bar through its sealing ball-joint connection.
The number tells you the system and the function, which makes reordering straightforward once you know the pattern. The leading digit is the system — 1-DU-32 is a Typ 1 part — and the letters are the function:
The trailing figures are the size: in 1-DU-32, the 32 is a 3.2 mm outlet. Suffixes carry the variant — PT conical pipe thread, U undercut thread, DK double ball, EK extra short, SS stainless steel, K flexible.
Browse everything: the full range of coolant hose and nozzle components, or go straight to Typ 0, Typ 1, Typ 2 or Typ 3.
Not sure what fits your machine? Tell us the machine and the coolant connection you are working from and we will specify the assembly for you. Email the FM Carbide technical team — FM Carbide helps you machine better!