What GKM Siebtechnik does

GKM Siebtechnik is a German industrial engineering company headquartered in Waibstadt that designs and manufactures precision fine-sieving equipment for global industrial manufacturers and quality control laboratories. Its core product range spans tumbling sieve machines (KTS), vibrating sieve machines (KTS-VS, KTS-V, KTS-V2, KTS-VP2), control and protection sieve machines (KTS-VS 2), and laboratory analysis machines (KTL, KLS 200). Differentiated performance on difficult-to-screen materials is delivered through proprietary ultrasonic assistance modules (GKM Ultra-Vario-Sonic System and Ultra-Flow-Sonic System), enabling up to four simultaneous sieve fractions across dry and wet sieving modes for dry, dusty, powdery, and granular products. The company operates under the GKM Group brand with a multilingual presence (German, English, Chinese).

GKM follows a hardware-led B2B revenue model selling capital equipment with long replacement cycles, supplemented by recurring aftermarket services (spare parts, screen tensioning, optimization, overhaul). Distribution is direct: enterprise customers initiate contact via the company website or at industry trade shows, and a field sales team quotes configured systems. The commercial mix leans on industry events (Hillhead 2026 in the UK) and proprietary partner events (GKM Partnertage 2026) to drive pipeline. Customer segmentation is horizontal, addressing any industrial producer requiring precise particle separation or inbound/outbound quality control sieving, rather than being tied to a single vertical.

In June 2026 the company executed its first disclosed cross-border acquisition, taking over Spanish sieving specialist MAINCA to establish a Spanish operations footprint and broaden European coverage. The acquisition extends GKM's installed base, after-sales service capacity, and route-to-market into Iberia, while preserving the MAINCA brand as a wholly owned subsidiary. GKM self-describes as a technological market leader in fine sieving with over 40 years of market experience and consistent healthy growth. No public listing, parent company, or external institutional investor information is disclosed in the available sources.

Name

GKM Siebtechnik

Legal name

GKM Siebtechnik

Website

https://gkm-net.de

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

GKM Siebtechnik is a German manufacturer of precision industrial fine-sieving equipment, including tumbling, vibrating, and control sieve machines with proprietary ultrasonic assistance. It serves industrial manufacturers and quality-control laboratories globally under the GKM Group brand.

Ownership category

akta.pro rank

Product category

Industrial Screening Equipment

NAICS

Other General Purpose Machinery Manufacturing (3339)

SIC

Special Industry Machinery (No Metalworking Machinery) (3550), Special Industry Machinery, Nec (3559)

akta.pro primary industry

Screening & Sizing Equipment (IMAHAMAG)

Keywords

• Industrial screening machines
• Fine particle sieving
• Vibrating sieve machines
• Tumbler screening equipment
• Ultrasonic sieving systems

Headquarters

HQ city

Waibstadt

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Sieve Machine Sales: Sale of industrial sieving equipment including tumbling sieve machines (KTS), vibrating sieve machines, control sieve machines, and laboratory sieve machines. One-time capital equipment sales with long replacement cycles.
2. After-Sales Services: Comprehensive after-sales support including spare parts, sieve tension service, optimization, and overhaul services. Provides ongoing revenue from installed machine base.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

GKM Siebtechnik manufactures and sells industrial fine-sieving equipment, including KTS tumbler screening machines, KTS-VS vibrating sieve machines, KTS-VS 2 control/protection sieve machines, laboratory analysis sieve machines, and complementary ultrasonic support systems (Ultra-Vario-Sonic and Ultra-Flow-Sonic). The offering is rounded out by after-sales services such as spare parts, screen tensioning, optimization, and complete machine overhauls.

Product overview

GKM Siebtechnik is a technology leader in fine sieving, offering a comprehensive portfolio of industrial screening machines. The core product line includes KTS tumbler screening machines for precise separation of dry, dusty, powdery, and granular products, complemented by the KTS-VS and KTS-VS 2 series of vibration screening machines for both dry and wet sieving applications (with variants KTS-V, KTS-V2, and KTS-VP2). Laboratory-scale offerings include the Labor-Analysensiebmaschine KTL and Labor Luftstrahlsieb KLS 200 for particle analysis. The product range is enhanced by ultrasonic support systems (GKM Ultra-Vario-Sonic System and Ultra-Flow-Sonic-System) for difficult-to-screen materials. The company also provides comprehensive after-sales services including spare parts, screen tensioning, optimization, and machine overhaul. The portfolio was expanded through the acquisition of Spanish specialist MAINCA.

Differentiator

Problem solved

Functional benefit

Products and services

• KTS Taumelsiebmaschine (Tumbler Screening Machine) Tumbler screening machine for the precise separation of dry, dusty, powdery or granular products, particularly suited to high-performance sieving of light, fine and difficult-to-screen materials.
• KTS-VS Vibrating Sieve Machine Vibrating sieve machine for dry and wet sieving of all kinds, with a robust screening body enabling up to four simultaneous sieve fractions.
• KTS-VS 2 Control and Protection Sieve Machine High-performance protection and control sieve machine for dry and wet sieving that removes unwanted particles, contaminants, or oversized material from the production process before products are further processed or packaged.
• KTS-V2 Vibrating Sieve Machine (Variant) Vibrating sieve machine variant intended for protection and control sieving applications.
• KTS-VP2 Vibrating Sieve Machine (Variant) Vibrating sieve machine variant intended for protection and control sieving applications.
• KTS-V Vibrating Sieve Machine (Variant) Vibrating sieve machine variant from the KTS-VS product family.
• Labor-Analysensiebmaschine KTL (Laboratory Analysis Sieve Machine) Laboratory-scale analysis sieve machine for precise particle size analysis in laboratory settings.
• Labor Luftstrahlsieb KLS 200 (Laboratory Air Jet Sieve) Laboratory air jet sieving machine for fine particle analysis.
• GKM Ultra-Vario-Sonic System Proprietary ultrasonic support system for enhancing sieving performance, particularly for difficult-to-screen materials.
• Ultra-Flow-Sonic System (Discharge Aid) Ultrasonic discharge assistance system that improves material flow during sieving of difficult materials.
• After-Sales Service - Spare Parts Supply of spare parts for GKM sieving machines.
• After-Sales Service - Screen Tensioning Professional screen tensioning service to maintain optimal sieving performance on GKM machines.
• After-Sales Service - Machine Optimization Machine optimization services to improve sieving efficiency and performance on installed GKM equipment.
• After-Sales Service - Overhaul Complete machine overhaul and refurbishment services for GKM sieving machines.

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• MAINCAcoreStrategic or Co-development Partner · 2 June 2026GKM Siebtechnik acquired MAINCA, a Spanish sieving technology specialist, marking a strategic milestone for expansion into the Spanish market. This acquisition strengthens GKM's European presence and brings additional expertise in sieving technology.

Scale indicators3 records

Recent moves4 records

Expansion highlights5 records

Direct peers

• Sweco: US-based manufacturer of round and rectangular vibratory screening equipment, sifting machines, and separation solutions. Direct competitor in fine and ultrasonic-assisted industrial sieving applications.
• Kason Corporation: North American manufacturer of vibratory screeners, separators, and fluid bed processors for dry and wet sifting. Comparable product line focused on circular vibratory separators with overlapping end markets.
• Retsch (Verder Scientific): German manufacturer of laboratory mills, crushers, and sieve shakers for particle size analysis. Directly comparable to GKM's KTL and KLS 200 laboratory sieve machines used in QC and analytical labs.
• Russell Finex: UK-based global manufacturer of industrial sieving, filtration, and separation equipment. Directly competes with GKM in vibrating sieves, ultrasonic deblinding systems, and separators serving food, pharma, and chemical processors worldwide.
• Haver & Boecker: German family-owned manufacturer of wire mesh and industrial screening/sieving machines. Direct competitor in vibrating screen technology and screening media serving minerals, chemicals, and food industries.
• Endecotts: UK-based manufacturer of laboratory test sieves and sieve shakers. Comparable to GKM's laboratory analysis sieving machines for fine particle classification in QC environments.
• Allgaier-Process Technology: German-headquartered specialist in screening machines, tumbler screeners, and process technology for bulk solids. Closely overlaps GKM's product line in fine sieving and vibrating/tumbling screen technology.
• VibraScreener: US manufacturer of round and rectangular vibratory screener and separators, including ultrasonic deblinding systems. Direct competitor in industrial fine sieving with overlapping ultrasonic-assisted product offerings.

Broad incumbents

• Bühler Group: Swiss global industrial group serving food, feed, and advanced materials with a wide portfolio that includes sorting, sifting, and separation technology. Overlaps with GKM in industrial sieving as part of a much broader processing equipment portfolio.
• W.S. Tyler / Haver Niagara: Established North American screening and separation solutions provider offering wire cloth, vibrating screens, and analytical sieves. Competes with GKM in industrial sieving media and equipment across multiple end markets.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

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 GKM Siebtechnik