Saxwerk Gmbh

What Saxwerk Gmbh does

Saxwerk GmbH is a German-based industrial equipment manufacturer specializing in handling, dosing, discharge, and storage systems for difficult-to-flow bulk materials. The company operates as part of a two-entity group alongside Swedish parent Saxwerk AB (founded 1970), with the German legal entity established in 2014 and headquartered in Bispingen. Saxwerk designs and delivers custom-engineered systems for municipal wastewater treatment plants, wood processing and panel board facilities, bioenergy and district heating operators, and waste-to-energy plants across at least 13 countries in Europe and Asia.

The firm's product architecture is built around storage silos (round and rectangular, 60 m³ to 600 m³ and beyond) paired with proprietary discharge technologies, principally the Gleitrahmen (sliding frame) system, Schubböden (push floors), Hydraulikrotor, and Austragungsschnecken (discharge screws). These are complemented by chain conveyors, bucket elevators, wet ash conditioners, rotary feeders, and screening systems. The portfolio is organized into five product areas: Klärschlamm Handling (sewage sludge, handling 15-35% dry substance content), Material Handling und Recycling, Umwelt und Entsorgung, Asche und Schlacke, and Holzplattenindustrie. Saxwerk's systems are typically integrated with complementary OEM technologies such as Seepex eccentric screw pumps, Huber SE belt dryers, and Bellmer wedge presses, and are frequently specified into turnkey installations by engineering consultants such as Ingenieurgesellschaft Heidt + Peters.

Saxwerk operates a project-based, direct enterprise sales model with no public pricing and long sales cycles targeting municipal and industrial clients. Revenue is generated through one-off custom engineering contracts for design, manufacturing, delivery, and commissioning of complete bulk material handling systems. The company is privately held by the Groffmann family, with Christoph Groffmann and Nikolas Groffmann serving as managing directors of the German entity. Marketing and lead generation rely on flagship trade show participation at LIGNA (wood processing) and IFAT (water/wastewater), supplemented by a multilingual website, case-study-driven content, and direct field sales engagement.

Name

Saxwerk Gmbh

Legal name

Saxwerk GmbH

Website

https://www.saxwerk.de

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

1–10 employees

Short description

Saxwerk GmbH is a German industrial equipment manufacturer specializing in custom-engineered silos, discharge systems, and material handling solutions for difficult-to-flow bulk materials. The company serves municipal wastewater treatment plants, wood processing and panel board facilities, bioenergy operators, and waste-to-energy plants across DACH, Nordics, and broader international markets.

Ownership category

akta.pro rank

Product category

Bulk Material Handling Equipment

NAICS

Conveyor and Conveying Equipment Manufacturing (333922)

SIC

General Industrial Machinery & Equipment (3560)

akta.pro primary industry

Bulk Solids Handling & Processing Equipment (Conveying, Silo, Feeders) (IMAHAEAG)

akta.pro secondary industry

Industrial Waste Handling & Compaction Equipment (Balers, Compactors) (IMAHALAI)

Keywords

• Bulk material handling
• Sewage sludge systems
• Silo discharge equipment
• Wood chip conveying
• Biomass ash handling

Headquarters

HQ city

Bispingen

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Custom Industrial Equipment Sales: Saxwerk generates revenue through the design, manufacturing, and delivery of custom bulk material handling systems including silos, discharge systems, conveyors, and complete turnkey installations. Projects are typically one-off custom engineering contracts with long sales cycles targeting municipal and industrial facilities.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Saxwerk GmbH designs, manufactures, and supplies custom-engineered bulk material handling, dosing, discharge, and storage systems for difficult-to-flow materials such as dewatered sewage sludge, wood chips, sawdust, biomass fuels, and combustion ash. Core products include silos, sliding frame (Gleitrahmen) discharge systems, screw conveyors, push floors, chain conveyors, rotors, and wet ash conditioners, offered both as individual components and as complete turnkey installations. The company primarily serves municipal wastewater treatment plants, wood panel and sawmill operations, bioenergy and district heating facilities, and waste-to-energy plants across DACH, Nordic, and select international markets.

Product overview

Saxwerk GmbH provides industrial bulk material handling systems focused on difficult-to-flow materials, operating under a unified product architecture centered on storage silos and discharge/extraction systems. The core product line includes silos (Silo), sliding frame discharge systems (Gleitrahmen), screw conveyors (Schneckenförderer), rotors (Rotore), push floors (Schubboden), chain conveyors (Trogkettenförderer), and auxiliary equipment such as wet ash conditioners, elevators, rotary feeders, and screening systems. These components are organized into five product areas: Klärschlamm Handling (sewage sludge handling), Material Handling und Recycling, Umwelt und Entsorgung (environment and disposal), Asche und Schlacke (ash and slag handling), and Holzplattenindustrie (wood panel industry). The company offers both individual components and complete turnkey systems, integrating its proprietary discharge technology (Gleitrahmen) as the foundational element across most applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Silo (Silos) Round and rectangular storage silos for difficult-to-flow bulk materials including dewatered sewage sludge, wood chips, sawdust, and ash, available in diameters from 3,000mm to 8,500mm and volumes ranging from 60m³ to 600m³.
• Gleitrahmen (Sliding Frames) Saxwerk's original sliding frame discharge systems for silos, available with hydraulic drive. Designed to prevent bridging and ensure reliable discharge of difficult-to-flow materials, with multiple discharge screws for controlled extraction.
• Schneckenförderer (Screw Conveyors) Screw conveyors for horizontal and inclined material transport, including standard, shaftless, and double-screw variants, used for feeding, dosing, and discharge of bulk materials.
• Schubboden (Push Floors) Push floor systems for rectangular hoppers and bunkers enabling continuous discharge of bulk materials including wood chips, bark, and sewage sludge, with chain-driven floor plates and capacities up to 250 m³/h.
• Trogkettenförderer (Chain Conveyors) Trough chain conveyors for horizontal and slightly inclined material transport, suitable for wood chips, bark, sawdust, and other bulk materials.
• Rotore (Rotors) Hydraulic rotor systems for silo discharge providing reliable extraction of bulk materials with adjustable discharge rates.
• Austragsseparator (Discharge Separators) Discharge separator systems for material extraction from storage silos, designed to handle difficult-to-flow bulk materials.
• Nassentascher (Wet Ash Conditioners) Wet ash conditioning systems for humidifying fly ash and bottom ash from combustion plants, enabling safe handling and disposal of ash materials.
• Elevatoren (Elevators) Bucket elevators for vertical material transport in material handling and recycling applications.
• Zellenradschleusen (Rotary Feeders) Rotary feeders for controlled material discharge and airlock sealing in bulk material handling systems.
• Dosiersilos (Dosing Bins) Dosing bins with integrated discharge systems for precise material feeding and weighing applications.
• Faltenbalg System (Moving Bellow System) Splash protection device for sludge silos preventing material splash during discharge operations.
• Asche-Entstaubungsanlage (Ash Dust Conditioning) Ash dust conditioning systems for processing ash and slag from combustion facilities.
• Scheibensieb (Screening System) Disc screens for material classification and oversize removal in wood processing and recycling applications.
• Klärschlamm Handling (Sewage Sludge Handling Systems) Complete turnkey systems for reception, storage, and discharge of dewatered sewage sludge including silos, LKW receiving bunkers, and truck loading systems, handling materials with 15-35% dry substance content. Reference projects include Kläranlage Lüneburg (600 m³ silo), Klärschlammtrocknung Neustadt AöR, and Stockholm Vatten / Henriksdals Avloppsreningsverk (six 274 m³ silos).
• Material Handling und Recycling Complete material handling systems for wood industry and recycling applications including reception, conveying, and storage of wood chips, sawdust, and recycled materials. Reference projects include Södra Wood Värö (3,872 m³ push floor, 250 m³/h) and Profagus GmbH.
• Umwelt und Entsorgung (Environment and Disposal) Systems for handling sludges and refuse-derived fuels including reception, storage, and processing for environmental and waste management facilities.
• Asche und Schlacke (Ash and Slag Handling) Silos with discharge systems, wet ash conditioners, and moisturizing screws for ash and slag handling from combustion plants. Reference project: Alstom Power Sweden AB / Mälarenergi ash discharge system 120 m³/h for flue gas cleaning plant.
• Holzplattenindustrie (Wood Panel Industry Solutions) Complete solutions for wood panel manufacturing including handling of wood chips, sawdust, and fibers for particleboard, OSB, and MDF production lines. Reference projects include Swedspan Hultsfred (600 m³ sawdust silo) and VEAS Norway (Element-Tec modular silos).

Quantifiable outcome

• Handles sewage sludge with dry substance content of 15-35%
• +2 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature7 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Seepex GmbHcoreTechnology or Integration · 28 May 2026Seepex supplies SAI Smart Air Excenterschneckenpumpen (eccentric screw pumps) as part of Saxwerk's complete sewage sludge handling systems. The partnership integrates Seepex's pump technology with Saxwerk's silo and discharge systems for municipal wastewater treatment applications. Seepex SAI Smart Air Injection system is featured in multiple projects including Lüneburg and Geislingen treatment plants.
• Ingenieurgesellschaft Heidt + Peters mbHcoreImplementation/ SI/ Consulting Partner · 28 May 2026Engineering consultancy responsible for planning and design of sewage sludge treatment plant conversions. Heidt + Peters has been involved in multiple Saxon projects including Lüneburg wastewater treatment plant and the Faßberg/Winsen facilities, specifying Saxwerk equipment as part of their engineering designs.
• ZVO Entsorgung GmbHminorOthers · 1 April 2025ZVO Entsorgung GmbH operates the waste management facility where the Klärschlammtrocknung Neustadt AöR sewage sludge drying plant is located adjacent to the municipal waste-to-energy plant (MHKW). Saxwerk supplies handling systems for this facility.

Scale indicators3 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• KMPT Group: German-headquartered manufacturer of engineered screw pumps, conveying technology, and discharge systems for difficult bulk materials. Closest direct competitor to Saxwerk in silos, discharge screws, and bulk material handling for wastewater, sludge, and biomass applications.

Broad incumbents

• Coperion (formerly Coperion & Co.): Global market leader in compounding, extrusion, and bulk material handling equipment, including rotary valves, screws, and silo systems. A much larger incumbent serving overlapping customers in plastics, chemicals, and food, with comparable product categories in conveying and discharge.
• WAMGROUP: Italian-headquartered global manufacturer of screw conveyors, bucket elevators, rotary valves, and silo equipment for bulk solids handling. Competes with Saxwerk across the full conveying and discharge product portfolio, particularly in wastewater and biomass.
• Bühler Group: Swiss industrial group with significant bulk material handling, silo, and conveying equipment businesses serving feed, food, and advanced materials. Competes with Saxwerk in wood-based panels and biomass handling, though Bühler is far broader in scope and scale.
• Andritz AG: Austrian-listed supplier of plants, equipment, and services for pulp & paper, biomass/energy, and environmental sectors. Overlaps with Saxwerk in biomass boiler fuel handling, ash systems, and engineered sludge/biomass material flow projects in the DACH/Nordic market.
• Zeppelin Systems: German provider of bulk material handling systems, silos, and pneumatic conveying equipment for cement, gypsum, and process industries. A relevant incumbent peer for engineered silo and discharge systems, though more focused on dry powder/aggregate flows.

Emerging players

• Huber SE: German water and wastewater treatment equipment manufacturer that already partners with Saxwerk on sludge drying lines (Neustadt Holstein). An adjacent/partner peer in municipal sludge handling with overlapping customer base and complementary product scope (mechanical dewatering, drying).
• Seepex GmbH: German specialist in eccentric screw pumps used in sludge handling. Already integrated into Saxwerk's silo systems (Lüneburg, Geislingen). A complementary rather than competing peer, but a credible adjacent player in the same municipal sludge projects.
• Sodimate: France-based specialist in dry bulk handling, dosing, and slurry systems for water and wastewater treatment. Comparable niche focus on difficult-to-handle dry solids for municipal and industrial customers, with overlapping product categories in sludge storage and dosing.
• Vincent Corporation: US-based manufacturer of screw presses and dewatering/handling equipment for sludge, biomass, and bulk solids. Comparable niche engineering focus on difficult bulk materials relevant to Saxwerk's municipal and biomass customer base.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/saxwerk

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Saxwerk Gmbh