Tire Shredding 101 Archives - CM

March 21, 2017

Learn Stage 1 = ShreddingTire Shredding 101

Stage 1 – Shredding

The reduction of whole tires down to shreds or chips utilizing one of our CM Tire Shredders.

By Products: Clean cut shreds or chips.





TDF – Tire Derived Fuel

Used as an alternative to fossil fuels. Used primarily in cement kilns, steel mills power plants and pulp and paper mills. Size range 25 mm to 100 mm.

 Benefits: Burns hotter and cleaner than coal or petcoke.

TDA – Tire Derived Aggregate

Used as a light weight fill material for civil engineering projects such as: back fill, slope stabilization, embankments, drainage and sound abatement. Size range, 100mm to 400mm [4’ – 16”].

 Benefits: Very durable, excellent drainage, reduces vibrations, insulates and lasts a long time.

CM Equipment Used for Stage 1

CM Primary Shredder – Used to make larger cuts or single pass
CM Chipping Shredder – Used for TDF to make smaller cuts
CM Chip Shredder – Used for TDF to make    smaller cuts
CM Disc Screen
Assorted conveyors

Primary Shredder

Used to make larger cuts

Secondary Chipping Shredder

Used to make clean cut TDF

Disc Screen

Used to size material


Shredder + Disc Screen = TDF or TDA

March 21, 2017

Learn Stage 2 = Liberation - Steel RemovalTire Shredding 101

Stage 2 – Liberation

Pre-shredded tires are introduced to the CM Liberator which removes the steel from the rubber fraction. Further reduction of the shred or chips into coarse ground rubber feedstock is accomplished. Clean steel is ready for resale. Initial fiber is extracted using a dust collection/air system.

By Products: Wire free crumb rubber – 38 mm to 6 mm [1.5” to .25”] Clean steel 95 % + free of contaminants





Additional Revenue Stream


Rubber Mulch

Used for landscaping

 Benefits: Deters insects, drains well, water gets to the plants, long lasting, does not fade, blow away or disintegrate, reduces weed growth and reduces soil erosion.

Playground and Equestrian Footing

Used as a loose cover for playgrounds or horse arenas.

 Benefits: Softer cushion for falls, long lasting, does not blow away, deters insects, comes in many colors!

Wire Free TDF

Used for waste to energy, pyrolysis or gasification applications

 Benefits: Results in high grade carbon char and makes excellent feedstock for syngas and bio-diesel fuels.

CM Equipment Used for Stage 2

CM2R Liberator – for smaller operations
CM4R Liberator – for larger operations
Belt Magnet
Steel Reclaim System with drum magnet (recommended for best quality clean steel)
Assorted conveyors
Air/dust collection system (optional)

CM4R Liberator


Stage 1 Equipment + CM Liberator + CM Steel Reclaim System (recommended)
Rubber Mulch, Loose Playground/Equestrian Footing, Wire Free TDF
and Clean Steel Ready for Resale

March 21, 2017

Learn Stage 3 = Granulation & Fiber RemovalTire Shredding 101

Stage 3 – Granulation

The Granulator can accept 6-19 mm [1/4″ – 3/4″] minus wire free crumb and process it down to 1-4 mm [10 – 20 mesh] granulate rubber. At this stage, screens are used to size the material and the air system is used to extract the remaining nylon fiber.

By Products: Coarse crumb rubber feedstock







Infield Turf for Artificial Playing Fields

Rubber crumb placed between the blades of synthetic grass. Used in soccer, baseball and football fields globally.

 Benefits: Softer for falls, lasts a long time, less maintenance than a grass field, drains quickly for a drier, cleaner playing surface.

Pour in Place Surfaces

Used for running tracks, rubber tiles, pour in place surfaces, tree surrounds, and animal mats.

 Benefits: Excellent drainage, lasts a long time, can be colored, less maintnenace, very durable, gentle for athletes, absorbs trips and falls.

Rubber Molded Products

Used for running tracks, rubber tiles, pour in place surfaces, tree surrounds, and animal mats.

 Benefits: Excellent drainage, lasts a long time, can be colored, less maintenance, very durable, gentle for athletes, absorbs trips and falls.

CM Equipment Used for Stage 3

CM Granulator
Air gravity table with de-stoner
Multi deck screen for sizing material
Drum magnet
Assorted conveyors


Stage 1 Equipment + Stage 2 Equipment + CM Granulator,
Air gravity table/destoner, multi deck screen and drum magnet
1-4 mm crumb rubber for Infield Turf, Pour In Place Surfaces and Molded Rubber Products

March 21, 2017

Learn Stage 4 = Final Milling & ScreeningTire Shredding 101

Stage 4 – Milling & Screening

The Dual Drive Crackermill will accept 4-8 mm crumb and futher process into fine powders ranging from 20 to 80 mesh material. Final rubber sizing happens at this stage to produce these fine powders.

By Products: Fine rubber powders

Rubberized Asphalt and Molded Rubber Products



Rubberized Asphalt

A unique blending of powdered tire rubber, aggregate and special binders make for exceptional roadway and other paving projects.
 Benefits: Exceptional drainage, resistant to freezing temperatures, quieter than traditional paving, less cracking over time, uses less thickness than traditional asphalt, safer for the driver.

Injection or Molded Products

The rubber powder is mixed with a binding agent to mold into a wide variety of new products such as auto parts, shoe soles, exercise mats, and is also used in building construction for the reduction of vibration or sound absorption on both floors and flat roof projects.

 Benefits: Durable, lasts a long time, binds with a wide range of different polymers, used in many industries.

CM Equipment Used for Stage 4

CM Dual Drive Crackermill
Final sizing screen
Bagging station(s)
Assorted conveyors


Stage 1 Equipment + Stage 2 Equipment + Stage 3 Equipment +
CM Dual Drive Crackermill and Final Screener
20 – 80 Mesh Rubber Powders used for Rubberized Asphalt Injection Molded or Pressed Products

All CM Tire Shredders & CM Industrial Shredders equipment is proudly made in the USA at our Sarasota, Florida factory


CM Tire Shredders / CM Industrial Shredders

A Bengal Machine brand

Corporate Headquarters: +1 941.755.2621

Customer Service : +1 941.753.2815

Fueling technology and innovation for today and beyond, CM Shredders has long been at the forefront of game-changing innovations. CM’s shredders and recycling systems are hard at work in hundreds of locations spanning 5 continents in more than 28 countries and are processing over a half a billion tires each year worldwide.

CM Shredders utilizes cutting-edge, patented knife technology that has been tested and perfected in the demanding world of tire processing. CM Shredders has a longstanding reputation of being the most durable, reliable, and advanced equipment in the industry.

On December 28, 2018 CM was acquired and joined the Bengal Machine family of size reduction companies, which includes its sister company, Schutte Hammermill, a New York-based manufacturer that has developed an extensive line of size reduction equipment that includes hammer mills, lump breakers, crushers, and shredders that provide a consistent and exact finished particle size.