Lindner Polaris 2800: High-Performance Waste Wood Shredding

The Optimum Stationary Waste Wood Shredder

Waste wood recycling is becoming increasingly important as operators look to recover more value from discarded timber while producing consistent, high-quality material for energy recovery and material recycling.

For waste management and recycling companies, choosing the right industrial wood shredder is critical.

The machine needs to deliver high throughput while producing a consistent output with as few unwanted fines as possible.

The Lindner Polaris 2800 has been developed specifically for demanding waste processing applications and has proven its capabilities in waste wood recycling.

One example is Wurzer Umwelt GmbH in Eitting, Germany, which has been using Lindner shredding technology for more than a decade and selected the Polaris 2800 to increase its waste wood processing capacity.

Increasing Waste Wood Processing Capacity

Wurzer Umwelt processes waste wood across grades A1 to A4, with material primarily coming from demolition, restoration and construction-related activities.

The business had experienced significant growth in its waste wood operation.

Annual volumes had increased from approximately 30,000 tonnes to around 100,000 tonnes, creating a need for additional processing capacity and a shredder capable of handling substantially higher volumes.

To meet this demand, Wurzer upgraded its processing line in 2018, replacing an older machine with a Lindner Polaris 2800.

The objective was straightforward:

Increase throughput without compromising output quality.

What Is the Lindner Polaris 2800?

The Lindner Polaris 2800 is a stationary industrial shredder designed for demanding applications including waste wood processing.

It is part of Lindner’s range of high-performance shredding technology and is designed for continuous operation, high throughput and efficient material processing.

The Polaris uses a slow-speed cutting process rather than high-speed impact shredding.

This approach is particularly beneficial when processing waste wood because it can help reduce the generation of excessive fines while producing a more consistent output.

Mach Tech currently supplies the Polaris range in the UK and Ireland, with models including the Polaris 1800, 2200 and 2800.

High Throughput Waste Wood Shredding

For Wurzer Umwelt, throughput was one of the most important considerations when selecting a new shredder.

The Polaris 2800 achieved approximately 45 tonnes per hour, processing pre-crushed waste wood into an output fraction of less than 80mm.

The incoming material was roughly pre-crushed to below 300mm before entering the Polaris.

This combination of pre-processing and high-performance secondary size reduction allowed the facility to process large volumes efficiently while maintaining the required output specification.

For an operation processing around 100,000 tonnes of waste wood per year, this level of throughput can make a significant difference to overall plant productivity.

Why Low Fines Matter in Waste Wood Recycling

Throughput isn’t the only consideration when shredding waste wood.

The quality of the finished material is equally important.

Excessive fines can reduce the value and usability of recycled waste wood, particularly where the finished product is destined for energy recovery or material applications.

Wurzer had experienced problems with fines from its previous shredding solution.

Material containing too many fine particles was less attractive to buyers and could limit its potential applications.

The Polaris 2800 provided a solution.

Rather than aggressively crushing the wood at high speed, the machine uses a slower cutting process.

This produces a more controlled material size and significantly reduces the generation of super-fine particles.

Slow-Speed Cutting for Better Output

One of the defining characteristics of the Polaris is its slow-speed shredding technology.

The Polaris processes material at approximately 112 rpm, compared with high-speed crushing systems that can operate at speeds of around 800–1,000 rpm.

The slower cutting action helps tear and cut the material rather than pulverising it.

For waste wood processors, this can provide an important advantage:

More usable material and fewer unwanted fines.

The result is a more consistent product that can be suitable for both energy recovery and material recycling applications.

Processing A1 to A4 Waste Wood

Waste wood is commonly categorised according to its level of contamination and treatment.

The Wurzer facility processes waste wood across grades A1 to A4, covering a broad range of material characteristics.

This means the shredder needs to cope with changing feedstock conditions rather than processing one consistent material stream.

A robust industrial wood shredder therefore needs to provide:

• High torque
• Reliable material feeding
• Consistent output
• Resistance to contaminants
• High availability
• Easy maintenance
• Flexible configuration

The Polaris 2800 was selected because it could provide the combination of performance and reliability required for this demanding application.

Designed for Continuous Operation

Waste wood processing facilities cannot afford excessive downtime.

When a shredder stops, the impact can quickly spread through the rest of the processing line.

The Polaris 2800 is designed for continuous operation and incorporates features intended to simplify maintenance and minimise interruptions.

If non-shreddable material enters the machine, the shredder can stop and the material can be removed through the hydraulic maintenance door before processing resumes.

This allows operators to deal with contaminants quickly and get the machine back into production.

Lower Production Costs

The cost of producing a tonne of finished material is an important consideration for any commercial recycling operation.

A machine that delivers high throughput but requires excessive energy, maintenance or replacement wear parts may not provide the best overall return.

The Polaris has been designed to combine high throughput with efficient operation and long component life.

Lindner’s technology has been independently assessed in studies comparing production costs, with the Polaris series demonstrating competitive production costs per tonne against comparable single-shaft shredders.

For operators processing tens or hundreds of thousands of tonnes of waste wood each year, even relatively small improvements in cost per tonne can have a significant impact on overall operating costs.

A Shredder Built Around the Application

There is no single shredder configuration that is right for every waste wood recycling operation.

The ideal machine depends on factors including:

• Type of waste wood
• A1–A4 classification
• Feed material size
• Required throughput
• Target output size
• Contamination levels
• Moisture content
• Operating hours
• Downstream processing requirements

This is why application assessment is such an important part of choosing an industrial shredder.

At Mach Tech Services, we work with customers to understand their material, throughput and output requirements before recommending a shredding solution.

Waste Wood Recycling: Energy and Material Recovery

Processed waste wood can be used in several applications depending on its quality and classification.

For suitable material, shredded waste wood can be recovered for:

• Biomass and energy production
• Wood panel manufacturing
• Material recycling
• Alternative fuel applications

Producing a consistent particle size helps ensure the finished product meets the requirements of its intended application.

For Wurzer, the Polaris 2800 produced material below 80mm that could be recovered for both energy and material use.

This demonstrates an important principle in waste wood recycling:

The quality of the shredded material directly influences its potential value.

Why Choose Mach Tech for Waste Wood Shredders?

Mach Tech Services is the sole distributor of Lindner Recyclingtech shredders in the UK and Ireland.

We supply industrial shredding equipment for a wide range of waste and recycling applications, including waste wood, commercial waste, construction and demolition waste, plastics, SRF and RDF production.

Our support extends beyond machine supply.

We provide:

• Application and machine selection
• Material trials
• Machine installation
• Commissioning
• Preventative maintenance
• Breakdown support
• Genuine spare and wear parts
• Precision engineering
• Welding and fabrication
• Hardfacing
• Shredder rebuilds and refurbishment

We also hold more than £1 million of spare and wear parts in stock, helping customers minimise downtime when replacement components are required.

Choosing the Right Waste Wood Shredder

The right waste wood shredder should do more than simply reduce the size of timber.

It should help you maximise throughput, control the finished product, minimise unwanted fines and keep your processing operation running efficiently.

The Lindner Polaris 2800 has demonstrated its capabilities in demanding waste wood applications, delivering approximately 45 tonnes per hour while producing an output below 80mm for Wurzer Umwelt.

For businesses processing large volumes of waste wood, this combination of throughput, output quality and reliability can make a significant difference.

Frequently Asked Questions

What is the Lindner Polaris 2800?

The Lindner Polaris 2800 is a stationary industrial shredder designed for high-throughput waste processing applications. It is particularly suited to demanding materials such as waste wood and can be configured around the required throughput and output size.

Is the Polaris 2800 suitable for waste wood?

Yes. The Polaris 2800 is designed for applications including waste wood processing and can handle demanding waste wood streams when correctly configured for the application.

What types of waste wood can the Polaris process?

The Polaris can be used to process different grades of waste wood, including A1, A2, A3 and A4 material, subject to the specific material characteristics and machine configuration.

How much waste wood can a Polaris 2800 shred per hour?

Throughput depends on the material, feed size, contamination, moisture content and required output. In the Wurzer Umwelt application, the Polaris 2800 achieved approximately 45 tonnes per hour.

What output size can the Polaris 2800 produce?

The output size depends on the screen and machine configuration. At Wurzer Umwelt, the Polaris processed pre-crushed waste wood into an output of less than 80mm.

Why is low fines content important when shredding waste wood?

Excessive fines can reduce the quality and value of processed waste wood and may restrict the material’s potential applications. A controlled shredding process can produce a more consistent output with fewer unwanted fines.

What is the difference between shredding and crushing waste wood?

Shredding generally uses controlled cutting or tearing to reduce material size, whereas high-speed crushing can generate more fines. The Polaris uses slow-speed cutting technology to produce a more controlled output.

Can the Polaris 2800 operate continuously?

Yes. The Polaris is designed for continuous industrial operation. Its design includes features intended to simplify maintenance and help operators deal with non-shreddable material quickly.

What affects waste wood shredder throughput?

Throughput is influenced by the type and density of waste wood, feed size, moisture content, contamination, target particle size, machine configuration and operating conditions.

Is a stationary shredder better than a mobile shredder for waste wood?

It depends on the application. Stationary shredders can be particularly effective where large volumes of material are processed continuously at a fixed facility. Mobile shredders provide greater flexibility where material needs to be processed at different locations.

How much does a waste wood shredder cost?

The cost varies considerably depending on the shredder model, capacity, configuration, conveyors, screens, electrical systems and wider processing requirements. Mach Tech can assess your application and recommend a suitable solution.

Who supplies Lindner waste wood shredders in the UK?

Mach Tech Services is the sole distributor of Lindner Recyclingtech shredders in the UK and Ireland, providing machine supply, installation, commissioning, servicing and technical support.

Looking for a Waste Wood Shredder?

If you’re processing increasing volumes of waste wood and need greater throughput, improved output quality or reduced fines, choosing the right industrial shredder is essential.

The Lindner Polaris 2800 provides a high-performance solution for demanding waste wood processing applications, combining high throughput with controlled particle sizing and continuous operation.

Talk to Mach Tech Services about your waste wood processing requirements.

Call 01706 838 246 or email sales@machtechservices.com to discuss your application, arrange a site visit or find out more about the Lindner Polaris range.