Doppstadt Shredders and Trommels: German Engineering for Waste Processing | RPG Equipment

Written by Kerrie Queen | Jan 1, 1970 12:00:00 AM

Doppstadt: Slow-Speed Shredding Specialists

Doppstadt is a German manufacturer specializing in slow-speed shredders and trommel screens for waste processing, recycling, and biomass preparation. Where horizontal grinders like Bandit and Morbark use high-speed impact to reduce material, Doppstadt shredders use slow-speed, high-torque shafts to tear material apart — a fundamentally different approach with distinct advantages.

Slow-Speed Shredders

Model	Type	Drive	Throughput	New Price	Used Price
DW 2060	Single-shaft	Diesel-electric	30 – 80 TPH	$350,000 – $475,000	$125,000 – $275,000
DW 3060	Single-shaft	Diesel-electric	50 – 120 TPH	$475,000 – $625,000	$200,000 – $400,000
DZ 750	Dual-shaft	Diesel-electric	30 – 100 TPH	$500,000 – $700,000	$225,000 – $450,000

Why Slow-Speed Shredding?

Handles contaminated material — Slow-speed shredders can process material with metal, wire, rebar, and other contaminants that would destroy a high-speed grinder. The shafts simply push through or reverse.
Lower dust generation — The tearing action creates far less dust than high-speed impact grinding. Fewer air quality concerns.
Lower noise — Operating at 70-80 dB vs. 95-110 dB for horizontal grinders. Better for urban sites.
Lower fuel consumption — Electric drive and slow operation mean 40-60% less fuel than a horizontal grinder at equivalent throughput.
Consistent output — Screen baskets control output size precisely. No fines or dust generation from over-processing.

Trommel Screens

Model	Drum Size	Throughput	New Price	Used Price
SM 518	5' x 18'	80 – 200 TPH	$275,000 – $375,000	$100,000 – $225,000
SM 620	6.5' x 20'	120 – 300 TPH	$350,000 – $475,000	$150,000 – $300,000
SM 720	7' x 20'	150 – 400 TPH	$425,000 �� $575,000	$200,000 – $375,000

Best Applications for Doppstadt

MSW (municipal solid waste) processing — The dual-shaft shredders handle mixed waste including plastics, metals, and organics
C&D recycling — Mixed construction debris with rebar, wire, and varying material types
Biomass preparation — Shredding wood waste to consistent chip size for boiler fuel
Compost facility pre-processing — Shredding incoming feedstock before windrow formation
Tire and rubber recycling — The DZ dual-shaft models can process whole tires

Doppstadt vs. Horizontal Grinders

If you're processing clean wood (land clearing, pallets, logs), a horizontal grinder (Bandit, Morbark, CBI) is faster and cheaper per ton. If you're processing contaminated, mixed, or variable material, Doppstadt's slow-speed approach avoids the catastrophic damage that contaminants cause in high-speed grinders. Many operations use both — a Doppstadt shredder for pre-processing, followed by a horizontal grinder for final sizing.

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