Granulator Machine For Sale: Types, Costs & What To Look For

Looking for a granulator machine for sale? Whether you run a plastics recycling line or a small moulding shop, the right machine saves you time and money. But with so many sizes, blade setups and price tags, it is easy to pick the wrong one. This guide explains the main types, what they cost and what to check before you buy. We also cover why a used granulator machine can be a smart choice and how to spot problems early. By the end, you will know exactly what to ask sellers and how to compare your options side by side.

What Does A Granulator Machine Do?

A granulator machine chops plastic waste into small, even pieces called regrind. Inside, a spinning rotor with sharp knives cuts the material against fixed knives. A screen at the bottom lets the small pieces fall through. Anything too big stays in and keeps getting cut.

Factories use them on sprues, runners, rejected parts, pipes and bottles. The regrind can go straight back into production or be sold on. Either way, less material goes to waste.

Main Types Of Granulators

Beside-the-press granulators are the small ones. They sit next to an injection moulding machine and grind sprues and runners as they drop out. They take up little floor space and are easy to move.

Central granulators are bigger. They take scrap from several machines, often through a conveyor. On a busy shop floor, this saves a lot of hand carrying.

Heavy-duty granulators are built for thick, tough items such as purgings, pipes, drums and bumpers. They have strong rotors and big motors, so they cost more to buy and run.

Many models also come in a sound-proof cabinet, which helps if operators work close by.

New Or Used?

A used granulator machine often costs far less than a new one and you don’t have to wait for a factory build. Well-made machines from known brands can run for many years, so age alone is not a problem.

The risk is wear. Knives, screens and bearings all wear down and a machine that looks fine can hide faults. That is why the seller matters. Buy from a dealer who lets you inspect the machine, shares its history and explains what happens if something goes wrong.

How Much Does A Granulator Machine Cost?

Prices swing a lot, so treat these as rough UK guides. Size, motor power, brand, age and hours run all change the figure.

• Small used beside-the-press unit: about £1,000 to £4,000
• Mid-size used central granulator: about £4,000 to £12,000
• Large used heavy-duty granulator: about £12,000 to £40,000 or more

New machines start at a few thousand pounds for small units and can pass £50,000 for big ones.

Remember the extras. Delivery, unloading, electrical hook-up, new knives and screens and noise or dust control all add to the bill. A cheap machine that needs a new motor can cost more in the end than a better one bought at a higher price.

What To Look For Before You Buy

Start with your material. A granulator machine that handles thin film may struggle with thick pipe and the other way round. Tell the seller what you grind, the biggest piece you need to feed in and how many kilos an hour you need.

Next, check the feed opening. Your largest part should fit without being forced or cut down first. Then look at the rotor and knives. Sharp, even knives with little damage are a good sign. Ask when they were last sharpened or replaced and what a new set costs. Check the screen for cracks or holes too.

Look at the motor and power supply. Most industrial machines run on three-phase power, so make sure the voltage and phase match your site. When the machine runs, listen for rough noise and watch for heavy shaking.

Think about the discharge as well. Regrind can drop into a bin or be blown through a pipe to a silo and the machine needs the right outlet for your setup.

Test the safety features. Guards, interlocks and emergency stops should all work. Walk away from any machine with missing or bypassed safety parts.

Ask for the service history and hours run. A used granulator machine with good records is a much safer buy than one with none. Finally, check that knives, screens and belts are easy to get for that brand and model. A machine from a maker nobody supports can turn into a headache fast.

Common Mistakes To Avoid

Buying too small is the big one. A granulator machine running at full load all day wears faster and jams more often, so pick a size with some room to spare.

Another mistake is judging on price alone. Compare running costs, parts and support too. And don’t skip the test run. Seeing the machine cut your own scrap tells you more than any listing can. Measure your space, including door widths, before the machine arrives.

Finding A Granulator Machine For Sale

When you search for a granulator machine for sale, look for a seller who lists clear details: make, model, year, motor size and condition, with real photos. Vague listings are a warning sign. Ask questions and take your time.

You can see the granulators we have on our used machinery page and get in touch about any that fit your line. Match the type to your scrap, set a budget that covers the extras and check the machine closely. Do that and the right granulator machine can cut your material costs for years.

The price ranges above are general market estimates, not figures from a source, so check them against your own stock and pricing before you publish