If you run a scrapyard, an ELV dismantling site or a recycling plant, the machine you choose decides how many vehicles you can process in a day, how much each truck carries and what your scrap buyer is willing to pay. This guide explains the options in plain terms, so you can match the machine to your yard.
What a car compactor machine is
A car compactor machine uses hydraulic force to compress a vehicle body. Once the vehicle has been depolluted and stripped of valuable parts, the shell is loaded into the machine and pressed. The result is smaller, easier to handle and cheaper to move per tonne.
Same job, many names: compactor, crusher, flattener, logger, baler
The industry uses several words for related machines, and buyers search for all of them. Here is how they usually line up:
| Term | What people usually mean |
|---|---|
| Car compactor | General name for any machine that compacts vehicles |
| Vehicle crusher / scrap car crusher | General term; often a flattener, sometimes a baler |
| Car flattener | Presses the car from above into a flat pancake |
| Car logger | Compresses the vehicle into a long log-shaped block |
| Car baler | Compresses the vehicle on several sides into a dense, regular bale |
If you only need the product overview, our car crusher page explains how the flattener, logger and baler differ at a glance. The rest of this article helps you decide.
Four ways to compact a vehicle
Flattener
A flattener presses down on the car from above. It is simple and quick for low volumes, but the result is a flat shape that still contains a lot of air. Flattened cars stack well for storage, but the density per truck is limited.
Logger
A logger compresses the car into a log-shaped block. It is more compact than a flattened car, and many yards use it as a step up in transport efficiency.
Baler
A baler compresses the vehicle in a closed box using a lid and a main cylinder, producing a dense and regular bale. Because the bale is uniform, it loads predictably and is easier for a scrap buyer to handle. The Roter RR5 and RR6 balers produce a bale size of 880 x 650 mm and offer two programmes: Dense Bale and Bale for Mills.
What each output means for transport
| Output | Shape | Typical advantage | Typical limit |
|---|---|---|---|
| Flattener | Flat pancake | Simple, fast for small volumes | Air remains between layers |
| Logger | Log-shaped block | Better density than flattening | Shape depends on operator loading |
| Baler | Dense, regular bale | Most consistent, predictable loading | Larger machine and investment |
Exact densities and bale weights depend on the vehicle and the machine setting, so they are confirmed in your quote rather than quoted as a general figure.
What happens before compaction: depollution and parts removal
No compactor should receive a vehicle straight from the road. In the EU, end-of-life vehicles must be depolluted by an authorised facility before they are compacted. That normally means draining fuel, oils and other fluids, and removing the battery and tyres. Many yards also remove valuable parts such as catalytic converters, wheels and engines before baling, because they earn more as separate items.
A good machine supports this workflow rather than fighting it. The Roter balers include an optional liquid collection tank, which helps with residual fluids during compaction. Your authorisation, local rules and your depollution process stay your responsibility, so check them with your local authority.
For more on the full chain from arrival to bale, see our guide to ELV processing.
Why bale density changes your freight
Loading by weight rather than volume
A truck is limited by two things: the weight it can legally carry and the space in the trailer. Loose or flattened cars fill the space long before they reach the weight limit. Denser bales let you load closer to the weight limit, so you pay for fewer trips per tonne. That is why many yards that start with a flattener later move to a baler.
If your scrap buyer pays by weight delivered, the saving lies in the cost of moving each tonne. Our article on bale density goes into the details, and our guide to how balers reduce transport emissions covers the environmental side.
Choosing a machine for your yard
Throughput: RR5/RR6 15-20 t/h on vehicles
Throughput is the first number to check. The Roter RR5 and RR6 process 15-20 t/h of vehicle scrap, and 8-14 t/h of general scrap metal. The two models differ by box length: 5,000 mm for the RR5 and 6,000 mm for the RR6. The RR5 weighs 21 t and the RR6 weighs 22 t.
The figure you will achieve depends on your material and loading method, so we confirm it against your scrap stream in the quote.
Fixed, semi-mobile, roll-on/roll-off or trailer
The same RR5/RR6 machine is available in four configurations:
- Fixed: for a permanent position in one yard.
- Semi-mobile: can be relocated when needed.
- Roll-on/roll-off: moved on a suitable roll-on/roll-off vehicle.
- Three-axle trailer: for yards that need to move the machine between sites.
None of these configurations needs a foundation. That removes civil works from the budget and shortens the time from delivery to first bale. Read more in our no-foundation article. If your work takes you from site to site, take a look at our mobile car baler page.
Diesel or electric
You can choose the power source to match your site:
- Diesel: 55 kW or 75 kW engine (Perkins or CAT), useful where mains power is limited.
- Electric: 75 kW electric motor, with a 90 kW electric option.
Electric avoids on-site fuel handling. Diesel gives independence from the grid. Both are discussed in our diesel vs electric baler guide.
What the RR5/RR6 offers in detail
For readers comparing machines, here are the verified main specifications of the Roter RR5/RR6 baler:
| Specification | RR5 | RR6 |
|---|---|---|
| Box length | 5,000 mm | 6,000 mm |
| Box material | Hardox 400/450 | Hardox 400/450 |
| Opened box width | 1,850 mm | 1,850 mm |
| Lid | 3 cylinders, 200 t lid force | 3 cylinders, 200 t lid force |
| Main cylinder | 155 t | 155 t |
| Bale size | 880 x 650 mm | 880 x 650 mm |
| Working pressure | 280 bar | 280 bar |
| Capacity (vehicle scrap) | 15-20 t/h | 15-20 t/h |
| Weight | 21 t | 22 t |
The three-cylinder lid is a defining design feature; our three-cylinders article explains why it matters for dense, consistent bales. For the complete technical sheet, visit the RR5/RR6 baler product page.
Operator workflow and safety
A compactor is only productive if it is easy to operate safely. The RR5/RR6 is controlled by radio control, which is included, so the operator can stand at a safe distance and see the loading area. A 7″ or 10″ touch screen shows the machine status, and light and sound signals warn people nearby. Automatic greasing is available as an option, which reduces manual maintenance tasks near moving parts.
Typical workflow for a yard with one operator:
- Load the depolluted vehicle with a grapple or crane.
- Select the programme (Dense Bale or Bale for Mills) on the touch screen.
- Close the lid and compress using the radio control.
- Eject the bale and stack or load it for transport.
An optional grapple with rotor (250, 280 or 300 L) can be fitted to speed up loading.
Ready to compare machines for your yard?
Roter Recycling designs and builds its balers in Ferrara, Italy. Every quote includes on-site installation and operator training, with remote diagnostics and spare parts supplied from Ferrara. Tell us your vehicle volume, your site and your power supply, and we will recommend the right configuration.
Request a quote or explore the car baler range.
FAQ
What is a car compactor machine?
A car compactor machine is a hydraulic press that compresses end-of-life vehicles into a smaller volume for storage, transport and sale as scrap. The main types are the flattener, the logger and the baler, which differ in the shape and density of the finished output.
Is a car compactor the same as a car crusher?
In everyday use, yes. “Car compactor”, “car crusher” and “vehicle crusher” all describe machines that reduce a vehicle’s volume. Strictly, a crusher or flattener presses from above, while a baler compresses on several sides in a closed box to give a denser, more regular bale.
How many tonnes an hour can a car baler process?
The Roter RR5 and RR6 process 15-20 t/h of vehicle scrap and 8-14 t/h of general scrap metal. Actual output depends on your material, how vehicles are loaded and the programme used, so it is confirmed against your own scrap stream in your quote.
Does a car baler need a foundation?
No. The Roter RR5 and RR6 need no foundation in any of the configurations (fixed, semi-mobile, roll-on/roll-off or three-axle trailer). This avoids civil works and shortens the time from delivery to production. Site requirements such as level, access and power are confirmed in your quote.
What is the difference between a car flattener and a car baler?
A flattener presses a car flat from above and leaves air between the layers. A baler compresses the vehicle in a closed box on several sides, giving a dense, regular bale that loads more predictably. Balers generally carry more weight per truck than flattened cars.
Last updated: 20 October 2026
Related reading: car crusher | car baler | mobile car baler | RR5/RR6 baler | Request a quote