GMT Group

What GMT Group does

GMT Gummi-Metall-Technik GmbH, operating as GMT Group, is a family-owned German manufacturer specializing in rubber-metal anti-vibration components and elastomer-based systems. Founded in 1968 in Bühl by Gerhard and Atina Engstler and still under family control (with Thomas Engstler as Managing Director/Owner alongside three co-directors), the company designs and produces vibration-damping, noise-reducing, and shock-absorbing components — including air springs, conical springs, axle bearings, bushings, engine mounts, conical mountings, and patented innovations such as the HYDRALL® hydraulic axle bearing and MERP axle shield — for railway vehicles, construction machinery, marine, general/drive engineering, defense technology, and renewable energy customers. GMT differentiates through in-house elastomer compound development, multi-axial fatigue and creep testing capabilities, and an extensive certification portfolio (ISO 9001, EN 15085-2, ISO 22163/IRIS, ISO 14001, ISO 50001, AEO) supported by direct supplier approvals from Deutsche Bahn, České dráhy, SNCB, and DNV.

The company operates a global footprint of nine wholly-owned facilities — production plants in Germany (Bühl with eight plants; Sangerhausen), Brazil, India, Ireland, Malaysia, and the USA, plus sales offices in France, Switzerland, and the UK — employing more than 1,200 people worldwide. GMT's revenue model rests on three streams: (1) B2B hardware sales of custom-engineered and standardized anti-vibration components to industrial OEMs, priced per application specification and volume; (2) application-oriented R&D and engineering services, including component construction, computational strength and damage calculations, and RAMS/LCC documentation; and (3) after-sales support such as residual-life testing and field-data analysis to extend maintenance intervals. Go-to-market is sales-led, executed by in-house technical sales engineers working directly with manufacturer customers, supplemented by the TraceParts digital component catalog and a presence at industry trade fairs.

Name

GMT Group

Legal name

GMT Gummi-Metall-Technik GmbH

Website

https://gmt-gmbh.de

Company type

Private

Founded year

1968

Operating status

Operating

Headcount range

501–1,000 employees

Short description

GMT Group is a family-owned German manufacturer of rubber-metal anti-vibration components and elastomer systems serving railway, construction machinery, marine, defense, and renewable energy OEMs through nine global production and sales facilities, with proprietary technologies such as HYDRALL® and MERP.

Ownership category

akta.pro rank

Product category

Anti-Vibration Components

NAICS

Plastics and Rubber Products Manufacturing (326), Synthetic Rubber Manufacturing (325212)

SIC

Fabricated Rubber Products, Nec (3060), Plastic Materials, Synth Resins & Nonvulcan Elastomers (2821)

akta.pro primary industry

Vibration Control & Anti-Vibration Products (Mounts, Bushings, Isolators) (IMANALAD)

akta.pro secondary industries

Molded & Extruded Industrial Rubber Parts (Custom Components) (IMANALAG), General-Purpose Rubber Compounds (NR/SBR/BR/EPDM) (IMANAJAA)

Keywords

• Anti-vibration components
• Rubber-metal components
• Elastomer solutions
• Vibration damping systems
• Industrial mountings

Headquarters

HQ city

Bühl

HQ country

Germany

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Anti-vibration Component Manufacturing: GMT manufactures and sells custom anti-vibration components and systems including air spring systems, conical springs, axle bearings, primary springs, chevron springs, bushings, spherical bearings, ball joints, steering rods, torque multipliers, and specialized marine and defense mounts. Products are sold directly to industrial manufacturers as original equipment.
2. Engineering and R&D Services: GMT provides application-oriented research and development services in close cooperation with customers. This includes component construction, computational strength calculations, damage calculations, fatigue strength analysis, and product validation testing. Services support RAMS/LCC (Reliability, Availability, Maintainability, Safety / Life Cycle Costs) documentation requirements.
3. After-Sales Support and Testing: GMT offers product condition assessment, residual life testing, and field data collection to support customers in predicting remaining useful operation time and extending maintenance intervals. This supports customer overhaul cost reduction and documentation requirements.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

GMT Group manufactures and distributes custom-engineered and standardized rubber-metal anti-vibration components and systems, including suspension elements (air springs, conical springs, primary springs, chevron springs, roller springs, guidance springs), bearings (bushings, spherical bearings, ball joints, axle bearings, rotor/generator bearings), and mountings (engine, cabin, machine feet, decoupling elements, crane/pump/radio device mountings). The company develops proprietary elastomer compounds in-house and offers patented products such as the HYDRALL® hydraulic axle bearing and MERP axle shield. Components are sold as original equipment to industrial manufacturers in railway vehicles, construction machines, marine, general/drive engineering, defense technology, and renewable energy sectors.

Product overview

GMT Group is a leading manufacturer of vibration technology components and systems, operating as a single-product portfolio company focused on rubber-metal anti-vibration solutions. The product range centers on elastomer-based components for damping, isolating, and decoupling vibrations across diverse industrial applications. The core offerings include suspension systems (air springs, conical springs, primary springs, roller springs), bearing assemblies (bushings, spherical bearings, ball joints, axle bearings), and mounting solutions (engine mounts, machine feet, cabin mounts). Patented innovations include the HYDRALL® hydraulic axle bearing and MERP axle shield for railway vehicles. Products serve six major application sectors: railway vehicles, construction machines, marine, general/drive engineering, defense technology, and renewable energies. GMT develops custom elastomer mixtures in-house and offers both standardized product families and bespoke engineered solutions tailored to specific customer load and environmental requirements.

Differentiator

Problem solved

Functional benefit

Products and services

• Air Spring Systems

Quantifiable outcome

• Extension of exchange intervals through residual life testing and field data analysis
• +2 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered major and core.

• ABIFER (Associação Brasileira da Indústria Ferroviária)majorStrategic or Co-development Partner · 23 February 2026ABIFER, the Brazilian Railway Industry Association, attended the opening ceremony of GMT's new Brazil plant. President Vicente Abate attended the inauguration, representing the railway industry association that supports and promotes railway sector development in Brazil. The partnership underscores GMT's commitment to the Latin American railway market.
• SIMEFRE (Associação dos Fabricantes de Veículos Equipamentos e Componentes para Ferrovias)majorStrategic or Co-development Partner · 23 February 2026SIMEFRE, the Brazilian association of manufacturers of railway vehicles, equipment and components, was represented at GMT Brazil's inauguration by Mr. Paschoal de Mario and Mr. Henrique Pedroso. This partnership provides access to Brazil's railway manufacturing ecosystem and industry network.
• Techniker Krankenkasse (TK)coreOthers · 18 February 2026GMT signed a three-year cooperation agreement with Techniker Krankenkasse (TK), Germany's largest statutory health insurance provider, to establish a comprehensive occupational health management system (BGM). TK supports GMT professionally and financially, investing several thousand euros annually in health promotion measures for all employees. The partnership includes health surveys, workshops, further training, and BGM measures tailored to team needs.

Scale indicators6 records

Recent moves21 records

Expansion highlights5 records

Direct peers

• Vibracoustic: Vibracoustic (a Freudenberg subsidiary) is one of the world's largest manufacturers of anti-vibration components for automotive and commercial vehicle applications. Directly comparable to GMT's rubber-metal mounting and bushing portfolio, though more skewed to automotive OEMs than railway.
• BOGE Elastmetall: BOGE Elastmetall (part of the BOGE Group / ZF Friedrichshafen ecosystem) produces rubber-metal components and vibration dampers for automotive, rail, and industrial applications. Highly comparable product overlap to GMT's bushings, mounts, and conical springs.
• Hutchinson: Hutchinson (TotalEnergies subsidiary) manufactures anti-vibration, sealing, and fluid transfer systems for automotive, rail, aerospace, and industrial markets. Directly comparable rubber-metal mount and bushing technology to GMT, with broader industry reach.
• Sumitomo Riko: Sumitomo Riko is a major Japanese manufacturer of rubber and elastomer products, including anti-vibration components for automotive and industrial applications. Comparable rubber compounding and vibration isolation technology; serves similar OEMs though with Asia-centric footprint.
• Parker LORD Corporation: Parker LORD manufactures vibration isolation, shock control, and elastomeric bonding products for aerospace, defense, and industrial markets. Comparable to GMT's rubber-metal mounting and shock absorption technology, particularly for defense and aerospace.
• Cooper Standard: Cooper Standard specializes in sealing, fuel/brake, and anti-vibration systems for automotive and industrial markets. Comparable rubber-based vibration isolation and mounting products to GMT, particularly in construction-equipment and commercial-vehicle segments.

Broad incumbents

• Trelleborg AB: Trelleborg is a large Swedish polymer engineering group with an anti-vibration solutions business serving rail, marine, and industrial customers. Overlaps with GMT in rubber-based vibration isolation but operates across far broader polymer end markets.
• Continental AG (ContiTech): Continental's ContiTech division manufactures rubber-based anti-vibration components, hoses, and conveyor belts for automotive and industrial customers. A broad incumbent with overlapping rubber-metal product categories though much larger and more diversified than GMT.

Emerging players

• Miba AG: Miba AG is an Austrian industrial supplier with bearings, friction, and sintered components divisions serving automotive, railway, and energy markets. Partial overlap with GMT in railway bearings and industrial drivetrain elastomer applications.

Regional players

• SGF GmbH (formerly Vibracoustic/SGF joint venture): SGF produces rubber-bonded metal components and anti-vibration systems primarily for European automotive and industrial customers. Comparable rubber-metal bushing technology to GMT, with overlapping railway and commercial-vehicle end markets.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@gmt_gmbh
• LinkedInlinkedin.com/company/gmt-gummi-metall-technik-gmbh

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries9 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 GMT Group