Polyurethane Tire Foam Filling Machine

This PU foam filling machine meters, mixes and injects a specified two-component polyurethane system into an existing tire or wheel cavity. It is not the machine used to mold an entirely new solid PU tire or wheel; that process uses a PU elastomer casting machine and a dedicated product mold.

This high-pressure polyurethane foam filling machine (also called a tire foam fill machine or foam fill tire machine) meters and mixes the specified material before dispensing it into an existing tire or wheel cavity. Equipment selection depends on the cavity volume, material system, required shot size and target output. This page covers cavity filling for forklift, AGV, mining and industrial tire or wheel projects. If the finished tire or wheel itself must be newly cast as a solid polyurethane part, see the PU elastomer casting machine instead.

Unlike a general-purpose foam dispensing head, this pu filling machine pairs a Gelanrex twin-component metering pump with a dedicated tyre-casting mold head, so mixing ratio and shot size stay locked for every cavity. Flow output scales from the SPU-HS2-20 (20-170) up to the SPU-HS2-5000 (1000-5000) — see the Product Parameters table below for the full range — so the same platform covers small-batch AGV wheel filling and high-volume industrial tyre lines. We run high pressure rather than a low-pressure gun because low-pressure mixing leaves uneven cell structure and micro-voids in a large tyre cavity; high-pressure impingement mixing keeps foam density consistent through the full pour, which is what prevents the tyre from developing soft spots or premature wear.

This high pressure polyurethane foam injection machine is built specifically for tire filling, not general-purpose foaming — for other applications, see our general-purpose high-pressure foam machine. Buyers comparing quotations for a polyurethane foam dispensing system on this platform often see different prices for machines that look similar in the Product Parameters table below. The difference usually comes down to two things the flow-range column does not show: the mixing head type (T or L head) and metering accuracy under real production conditions, not the frame or paint. Ask any supplier to state the mixing head type and metering-pump accuracy in a quotation, not just the flow range.

PU Polyurethane Foam Tire Production Equipment

Product Parameters

Existing Tire Filling vs. New PU Tire or Wheel Molding

Choose this PU foam filling machine when the project starts with an existing tire or wheel cavity that must be filled with a specified two-component polyurethane system. Send the cavity volume, tire or wheel construction, material data, required shot size and target output so the filling configuration can be checked.

Choose a PU elastomer casting machine when the project is to mold a new solid polyurethane tire, tread or wheel body as the finished part. That quotation instead needs the finished-part drawing, elastomer system, hardness target, mold concept and output requirement. The two processes are not interchangeable.

Frequently Asked Questions

What is a polyurethane foam filling machine used for?

On this page, the machine is used to meter, mix and dispense a specified two-component polyurethane system into an existing tire or wheel cavity. The cavity, material and required shot must be confirmed before the machine is configured.

Can this machine mold a new solid PU tire or wheel?

Not as the process described on this page. Molding a new solid PU tire, tread or wheel body as the finished part is an elastomer-casting application. Use a PU elastomer casting machine and provide the part drawing, material system, hardness target, mold concept and output requirement.

What is a tire foam fill machine?

A tire foam fill machine is the tire-specific version of a PU filling machine: it uses a metering pump and a tyre-casting mold head to inject two-component polyurethane directly into the tyre cavity, producing a solid, flat-free tire with consistent foam density.

How much does a PU tire filling machine cost?

Pricing depends on flow output, mixing head configuration and automation level. Contact us for a quote based on your production capacity requirements.

What’s the difference between high-pressure and low-pressure PU filling machines?

Low-pressure machines mix at lower pump pressure and suit smaller, simpler shapes, but can leave uneven cell structure in large cavities. High-pressure machines use impingement mixing to keep foam density consistent throughout the pour, which is why tire and wheel filling applications use high-pressure equipment.

Is a "foam fill tire machine" the same as this machine?

Yes. "Foam fill tire machine," "tire foam fill machine," and "PU tire filling machine" all describe the same equipment on this page — the high-pressure two-component injection unit used to fill tyre and wheel cavities with solid polyurethane foam.

What determines the cost of a PU foam filling machine, and what mixing head does it use?

Cost is driven mainly by flow rate range and the number of components (2-4), not by frame size alone — see the Product Parameters table above for the five model options. Every model in this range uses a T-type or L-type mixing head paired with a Gelanrex metering pump; the mixing head type and metering accuracy affect price more than flow range alone. For an exact quotation, send your target flow rate and shot volume per part.

Is this a true high pressure polyurethane foam injection machine, or a low-pressure line with a pump upgrade?

Yes, this is a true high pressure polyurethane foam injection machine — it uses impingement mixing at production pressure, not a low-pressure pump retrofit. Flow output ranges from 20-170 to 1000-5000 depending on model (see Product Parameters table above); ask any supplier for their actual working pressure spec before comparing quotes.