Gebr. Ruberg

What Gebr. Ruberg does

Gebr. Ruberg GmbH & Co. KG is a family-owned German mechanical engineering company founded in 1848 in Nieheim, Westphalia, currently led by the sixth generation of the Ruberg family (Managing Directors Alhard Ruberg, Janina Ruberg, and Marc Ruberg). The company designs, develops, and manufactures customized mixing, cleaning, and conveying machines and systems for agricultural and industrial bulk materials, with a core portfolio spanning precision batch mixers, continuous mixers, drum and container batch mixers, conical ribbon mixers, reactor mixers, mixing silos, vertical feeders, lump breakers, and a full cleaning line (aspirators, pre-cleaners, separators, nozzle hose filters, humidification systems) plus conveying elements (bucket elevators, trough chain conveyors, belt conveyors, screw conveyors).

Underlying technology centers on proprietary mixing precision of 1:100,000 achieved in 30–180 seconds, the patented ISR (Injection-Spraying System) for microfine liquid introduction, continuous-mixer throughput of 0.5–750 m³/h, and residue discharge rates up to 99.99%. A 350 m³ in-house RUBERG Technology Centre with attached laboratory supports customer-specific mixing trials, product testing, and process optimization under production-like conditions. Products carry GMP-, FDA-, EHEDG-, and ATEX-compliant designs where required for pharmaceutical, food, and hazardous-area applications.

The business operates a direct, project-based sales model with no public pricing, supported by trade fair participation (Brussels and Nuremberg 2026), inquiry-driven web presence, and worldwide after-sales service (spare parts, repairs, maintenance, commissioning, training). Customer reach spans approximately 1,750 buyers across 90+ countries with an export rate exceeding 60%, serving 12 vertical end markets including baby food, baking agents, animal feed, pharmaceuticals, chemicals, plastics, building materials, spices, coffee and tea, cereals, oilseeds, and food. With 65–70 employees and 5,000 m² of production and development space, Ruberg functions as a niche Mittelstand specialist selling engineered-to-order capital equipment into regulated bulk-material processing applications.

Name

Gebr. Ruberg

Legal name

Gebr. Ruberg GmbH & Co. KG

Website

https://g-ruberg.de

Company type

Private

Founded year

1848

Operating status

Operating

Headcount range

1–10 employees

Short description

Gebr. Ruberg GmbH & Co. KG is a sixth-generation, family-owned German machinery manufacturer (founded 1848) designing custom mixing, cleaning, and conveying systems for agricultural and industrial bulk materials, serving 1,750 customers across 90+ countries with patented precision technology.

Ownership category

akta.pro rank

Product category

Industrial Mixing and Processing Machinery

NAICS

Food Product Machinery Manufacturing (333241), Other General Purpose Machinery Manufacturing (3339)

SIC

Special Industry Machinery, Nec (3559), General Industrial Machinery & Equipment (3560)

akta.pro primary industry

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

akta.pro secondary industry

Chemical Processing Equipment (Reactors, Mixers, Agitators) (IMAHAEAA)

Keywords

• Industrial mixing machinery
• Batch mixing systems
• Bulk material cleaning
• Conveying equipment
• Agricultural processing machines

Headquarters

HQ city

Nieheim

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Machinery Manufacturing: Design, development, and manufacturing of customized mixing, cleaning, and conveying machines and systems for industrial and agricultural applications. One-time hardware sales with project-based pricing.
2. Aftermarket Services: Spare parts, repairs, maintenance, commissioning, and training services. Worldwide service and support for installed machines.
3. Testing and Consulting Services: Mixing trials, product testing, and technical consulting through the Technology Centre. Process optimization and process parameter determination services.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Gebr. Ruberg designs, manufactures, and services customized industrial machinery for mixing, cleaning, and conveying of agricultural and industrial bulk materials. The portfolio spans precision batch mixers, continuous mixers, drum/container/laboratory/conical ribbon/reactor mixers, mixing silos, aspirators, pre-cleaners, separators, humidification systems, dust filters, bucket elevators, trough chain conveyors, conveyor belts, and screw conveyors. Solutions are tailored to customer requirements through project-based engineering, supported by an in-house 350 m³ Technology Centre for trials and process development.

Product overview

Gebr. Ruberg is a family-owned mechanical engineering company (founded 1848) offering industrial mixing, cleaning, and conveying machines for agricultural and industrial products. The product portfolio centers on three core machine categories: (1) Mixing systems including Precision Batch Mixers, Drum Batch Mixers, Container Batch Mixers, Laboratory Batch Mixers, Conical Ribbon Mixers, Reactor Mixers, Mixing Silos, Continuous Mixers, Vertical Feeders, Lump Breakers, and Component Control Sieves; (2) Cleaning equipment including Aspirators, Universal Pre-cleaners, Nozzle Hose Filters, Gutter Dust Extraction systems, Separators, and Humidification Systems; and (3) Conveying elements including Bucket Elevators, Trough Chain Conveyors, Conveyor Belts, and Screw Conveyors. The company also offers used/refurbished equipment, comprehensive service including spare parts and worldwide support, and mixing trials and testing services through its in-house Technology Centre with 350 m3 testing facilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Precision Batch Mixer (CM series) High-precision vertical mixing systems achieving mixing precision of 1:100,000 in 30-180 seconds, with working volumes from 100 to 25,000 litres, handling powders, granules, and low-to-high viscosity liquids for pharmaceutical, food, chemical, building materials, plastics, and animal feed industries. Available in FDA-compliant variants.
• Drum Batch Mixer (FCM series) Batch mixers designed for use with standard commercial drums, allowing batch sizes of 10-100% of mixing chamber volume with consistent mixing quality. Supports cutting rotors for agglomerate breakdown and liquid additions.
• Container Batch Mixer (CCM series) Compact plant technology with simple container logistics, available in CCM-U (containers docked from below) and CCM-O (containers docked from above) variants, handling containers up to approximately 2,000 litres in GMP-, FDA-, and EHEDG-compliant design.
• Laboratory Batch Mixer (LCM series) Scalable mixing system for recipe and product development, ranging from pure dry substance mixtures to liquid additions, featuring manual swivel operation with product containers docked to the mixing chamber.
• Conical Ribbon Mixer (RKB series) Full or semi-conical mixing containers with slowly rotating mixing tools for gentle product action. Cylindrical mixing chambers with conical bottoms allow batch sizes of 5-100% of usable volume, with optional CIP system.
• Reactor Mixer (RCM series) High-precision mixing with additional cooling and heating capabilities of the mixing chamber, suitable for heating, cooling, drying, conditioning, homogenizing, aerating, degassing, crystallizing, and foaming processes in GMP-compliant design.
• Mixing Silos (RMS series) Horizontal and vertical flow mixing silos handling large volumes, available from 100 to 20,000 litres useful volume, with large-capacity variants up to 100 m³ capacity. RMS plus series for demanding dry material mixtures.
• Continuous Mixer (DLM series) Continuous production mixer with throughput from 0.5-750 m³/h and mixing chamber volume of 70-7,200 litres. Supports loosening, homogenizing, agglomerating, moistening, conditioning, coating, granulating, dispersing, emulsifying, and dissolving processes, with residual emptying above 98%.
• Vertical Feeder (RVD series) Dosing device generating uniform bulk flow for discharging free-flowing dry materials from bins, silos, and mixers. Polygon effect during spherical rotary lock rotation prevents bridging and gushing.
• Lump Breaker (KBR series) Crushes lumpy bulk materials and agglomerates, homogenising particle sizes and flow rate for uniform product transfer from bins, silos, big bags, and bag dumps into conveyors, mixers, and process equipment. Manufactured according to GMP, FDA, and ATEX guidelines.
• Aspirators (RV/RVS series) Air-screening cleaning machines for thorough cleaning of grain, oilseeds, legumes, malt, coffee, and other products. Available in 11 throughput rates from 40 t/h to 300 t/h with 9.0-84.0 m² screening areas.
• Universal Pre-Cleaner (RUV series) Rough cleaning machine for pre-cleaning of grain and legumes. Four performance sizes available from 100 t/h to 600 t/h heavy grain with screening areas of 4.5-28.0 m².
• Nozzle Hose Filter (RDF series) Filter for separation during suction or pressure conveying, dedusting, and cleaning of dust-laden air or gas mixtures. Achieves residual dust contents of less than 2 mg/m³ at clean gas outlet. Available in ATEX-compliant variants for hazardous areas.
• Separators (RS series) Cleans cereals, oilseed crops, and legumes using air separation without a sieve. Different machine widths according to throughput rate with product curtain created by feed flap and feed roller.
• Humidification System (DLM series) Continuous water supply system for cereals, oilseeds, and legumes. Produces homogenised mixture through variable residence time at low operating costs with adjustable mixing tool angles.
• Bucket Elevator (BEG series) Vertical transport solution for coarse and fine-grained or powdery bulk materials. Available in single or double design as belt or chain bucket elevator with capacity of 5 to 1,000 m³/h.
• Trough Chain Conveyor (TKF series) Horizontal transport system with performance sizes from 5 to 1,000 m³/h. Conveyor link chains pull bulk material dust-free in closed sheet steel housing with low chain speed for gentle product treatment.
• Conveyor Belt (FBA series) High-performance continuous conveyors for all types of grain, oilseeds, feed, fertilizer and other bulk materials. Modular design with drive/discharge station, intermediate joints, and tensioning station.
• Screw Conveyor (SFA series) Versatile conveying element for all types of bulk materials with compact design. Dust-free operation with low screw speed and closed housing.
• Used Equipment (Refurbished Machines) Refurbished machines delivered in used but completely overhauled condition from the Nieheim factory with full warranty. Cost-effective alternative to purchasing new machines with options for accessories and customisation.
• Aftermarket Service and Support Spare parts, repairs, maintenance, commissioning, and training services for installed machines, including worldwide support for maximum availability of both new and legacy installations.
• Mixing Trials and Testing Services Mixing trials, product testing, and technical consulting conducted at the RUBERG Technology Centre. Process optimization and process parameter determination services performed in a 350 m³ laboratory under production-like conditions.

Quantifiable outcome

• Mixing precision of 1:100,000 achievable in 30-180 seconds
• +4 more outcomes

Named customers4 records

Segments12 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators6 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Zeppelin Systems: German bulk material handling and process engineering specialist offering silos, conveying, and mixing systems for plastics, chemicals, and food. Closely comparable to Ruberg's conveying and mixing silos product line.
• Amixon GmbH: German specialty mixer manufacturer focused on food, pharma, cosmetics, and chemical powders with vertical and horizontal mixing technologies. Comparable product set and customer overlap with Ruberg's regulated-industry mixers.
• BHS-Sonthofen: German manufacturer of mixing, crushing, and recycling technology for chemicals, building materials, and environmental applications. Direct competitor in batch mixing and bulk solids processing equipment.
• Wenger Manufacturing: US-based manufacturer of cooking, extrusion, and mixing systems for pet food, aquatic feed, and human food. Directly comparable to Ruberg's animal feed mixing business and serves similar process-engineered project customers.
• Gebrüder Lödige Maschinenbau GmbH: German-based manufacturer of horizontal ploughshare mixers, coating systems, and reaction mixers serving plastics, chemicals, food, and pharmaceuticals. Most direct head-to-head competitor to Ruberg's CM and RCM mixer series.
• VMI Group (Mixaco): European mixing and material handling equipment group serving bakery, food, cosmetics, and plastics. Highly comparable mid-sized competitor with similar customer verticals and project-based business model.
• Maschinenfabrik Gustav Eirich GmbH & Co KG: German manufacturer of intensive mixers, kneaders, and processing equipment for ceramics, chemicals, and building materials. Direct competitor to Ruberg's precision batch and continuous mixers, particularly in heavy-industry applications.
• Hosokawa Alpine AG: German/Japanese powder processing equipment maker offering mixers, classifiers, and agglomeration systems for chemicals, food, and pharmaceuticals. Overlaps with Ruberg's continuous mixers and downstream processing equipment.

Broad incumbents

• GEA Group AG: Large German-listed manufacturer of process technology for food, dairy, and pharma. Overlaps with Ruberg in mixing and separation but serves much larger end-customers with broader-engineered plant solutions.
• Bühler Group: Swiss global market leader in food and feed processing equipment. Overlaps with Ruberg in mixing/cleaning/conveying for grain, feed, and chocolate applications but operates at much larger scale across a broader product portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/gebr.ruberg
• Facebookfacebook.com/Gebr.Ruberg
• LinkedInlinkedin.com/company/gebr-ruberg-gmbh

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Gebr. Ruberg