What Flender does

Flender GmbH is a global manufacturer of mechanical drive technology, headquartered in Bocholt, Germany, with roots dating to 1899/1901 and operations across 34 countries supported by more than 8,000 employees. The company produces industrial gearboxes, wind-turbine gearboxes under the Winergy brand, turbo gearboxes, gear couplings, and generators, with a stated installed base of approximately 175 GW of Winergy wind capacity and more than 15,000 turbo gearboxes in service. Its core technology portfolio centers on proprietary gear and coupling designs engineered for long operating lifetimes in heavy-industrial environments.

The company's commercial model is direct enterprise B2B sales with quote-based pricing, multi-year contracts, and long product lifecycles supported by commitments to supply spare parts and service for 10+ years after discontinuation. End markets span mining, cement, marine, energy, wind power, plastics and rubber, power generation, and defense, with go-to-market executed through a global direct sales and service network supplemented by the Flender Mall B2B e-commerce channel. Flender increasingly layers its AIQ digital condition-monitoring platform — covering vibration, temperature, and speed analytics — on top of its hardware installed base as a recurring aftermarket and service offering.

Flender operates as a privately held industrial platform, having been divested by Siemens to Carlyle in 2021 at an enterprise value of approximately €2 billion, and subsequently agreed to be sold to Triton Partners in 2026 at an enterprise value of approximately €3 billion. During this period, the company acquired Moventas to expand wind-gearbox manufacturing and service capacity and committed more than €100 million to scale Indian manufacturing capacity by roughly an order of magnitude, alongside continued product launches in couplings (N-ZAPEX) and digital services (AIQ).

Name

Flender

Legal name

Flender GmbH

Website

https://www.flender.com/

Company type

Private

Founded year

1899

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Flender GmbH is a global manufacturer of mechanical drive technology, producing industrial, wind (Winergy), and turbo gearboxes plus couplings for customers in mining, cement, marine, energy, wind power, and defense across 34 countries.

Ownership category

akta.pro rank

Product category

Mechanical Power Transmission Equipment

NAICS

Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing (333612), Mechanical Power Transmission Equipment Manufacturing (333613), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Engine, Turbine, and Power Transmission Equipment Manufacturing (33361)

SIC

General Industrial Machinery & Equipment (3560), Engines & Turbines (3510)

akta.pro primary industry

Linear Motion & Mechanical Power Transmission (Ball/roller screws, linear guides, bearings, couplings) (IMAHAGAM)

akta.pro secondary industry

Wind Turbine OEMs & System Integration (Nacelle/Generator/Controls) (EUAMACAC)

Keywords

• Industrial gearboxes
• Mechanical drive systems
• Wind turbine gearboxes
• Power transmission equipment
• Industrial couplings

Headquarters

HQ city

Bocholt

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Gearbox and Drive System Sales: Primary revenue from sale of mechanical drive technology products including industrial gearboxes, wind turbine gearboxes (via Winergy), turbo gearboxes, and couplings to industrial customers across mining, cement, energy, marine, and manufacturing sectors.
2. Spare Parts and Repair Services: Revenue from spare parts supply, repair services, and maintenance. Flender offers spare parts for up to 10 years after product discontinuation. Repair services include inspection, analysis, repair, and final inspection of gear units and drivetrains.
3. Service and Support: Comprehensive service offerings including installation, commissioning, preventive maintenance, condition monitoring, field services, retrofit and modernization services, and technical support for turbo gearboxes.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Flender manufactures and sells mechanical drive technology for industrial applications, including industrial gear units (helical, bevel-helical, planetary), turbo gearboxes for power generation, wind turbine gearboxes and generators under the Winergy brand, and a comprehensive portfolio of industrial couplings. The company complements its hardware portfolio with AIQ, an AI-powered condition monitoring platform for predictive maintenance, and a full lifecycle service offering covering spare parts, repair, field maintenance, retrofit, diagnostics, and remote expert support. Products are custom-engineered to customer specifications for heavy industrial applications including mining, cement, power generation, wind energy, marine, defense, oil & gas, and chemicals.

Product overview

Flender is a global market leader in mechanical drive technology, offering a comprehensive portfolio of gear units, couplings, and generators for industrial and wind energy applications. The core product portfolio spans Industrial Gear Units (including the new FLENDER ONE platform), Turbo Gear Units, and Wind Turbines Gearboxes under the Winergy brand. The couplings portfolio includes Flexible, Torsionally Rigid, Hydrodynamic (FLUDEX), Highly Flexible, Backlash Free, Safety, Railway, Turbo (ARPEX ART), and Wind Couplings. Winergy brand also provides Wind Generators. Supporting components include Bevel Gear Sets, Oil Supply Systems, and Lubricants. The company has recently launched AIQ, an AI-powered condition monitoring platform with modules including AIQ Core, AIQ Core Torque, AIQ Detect, AIQ Care, AIQ Core Commissioning, and AIQ Analytics for predictive maintenance and anomaly detection. Comprehensive services cover the entire product lifecycle including Emergency Hotline, Spare Parts, Repair, Field Maintenance, Retrofit/Modernization, Diagnostic, Remote Expert, Marine Services, Turbo Gear-Units Service, and Winergy Service 360. Manufacturing capabilities include Machining, Gear Manufacturing, Heat Treatment, Measurement and Testing Services, and Consulting.

Differentiator

Problem solved

Functional benefit

Brands

• Winergy: Wind turbine gearbox and generator brand operating under Flender. Winergy gearboxes and generators ensure wind turbines convert wind power into electrical energy reliably and efficiently at low lifecycle costs. The brand has delivered over 175 GW of gearbox capacity.
• FLENDER ONE
• AIQ
• AIQ on Tour
• N-ZAPEX
• FLENDER Mall

Products and services

• Industrial Gear Units Standard and customized helical, bevel-helical, and planetary gear units for industrial applications including belt conveyors, bucket elevators, crushers, mills, and other mechanical drive applications.
• Winergy Wind Turbine Gearboxes Wind turbine gearboxes produced under the Winergy brand for converting wind energy into electrical energy, with over 175 GW of gearbox capacity delivered globally since 1981.
• Turbo Gear Units High-precision turbo gearboxes developed and manufactured in Illkirch-Graffenstaden, France for industrial power generation, including integral gear units and turbo-planetary designs capable of transmitting power with precision; over 15,000 units installed worldwide.
• FLENDER ONE Industrial Gearbox Platform New industrial gearbox platform covering 100% of major industrial applications in vertical, horizontal, and any mounting position, with instant engineering configuration from concept to CAD in three clicks for mixers, aerators, conveyors, and other applications.
• N-ZAPEX Gear Couplings Gear coupling series for heavy-duty industrial applications in steel, cement, mining, and oil & gas sectors, with XN (cost-effective standardization) and XW (extreme power density up to 10 million Nm torque) variants offering improved misalignment compensation and patented Hollow-O-Ring sealing.
• Flexible Couplings Elastic couplings that accommodate misalignments and dampen vibrations in mechanical drive systems.
• Torsionally Rigid Couplings Couplings designed for applications requiring high torsional stiffness and precise power transmission.
• FLUDEX Hydrodynamic Couplings Fluid couplings providing soft and safe power transmission with overload protection for industrial applications.
• Highly Flexible Couplings Couplings offering high flexibility for vibration damping and misalignment accommodation in demanding industrial environments.
• Backlash-Free Couplings Precision couplings designed for zero-backlash applications requiring accurate positioning and motion control.
• Safety Couplings Couplings designed to protect drivetrain components from overload and torque limiting in industrial applications.

Quantifiable outcome

• AIQ condition monitoring can reduce unplanned downtime by up to 70% and maintenance costs by up to 40%
• +3 more outcomes

Segments7 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature3 records

Partnerships

One partnership is on record.

• MoventascoreStrategic or Co-development Partner · 25 April 2022Flender completed acquisition of Finnish wind turbine gearbox manufacturer Moventas following regulatory approval in April 2022. Both companies continued operating independently during the transition period. The acquisition strengthened Flender's position in the wind energy sector.

Scale indicators8 records

Recent moves8 records

Expansion highlights5 records

Regional players

• Wärtsilä: Finnish marine and energy technology company producing ship propulsion gearboxes and power plant solutions. Comparable to Flender in marine propulsion and turbo/power generation drivetrains, though with a different geographic and product emphasis.

Direct peers

• SEW-Eurodrive: Global leader in drive technology, gearmotors, electronic drives and mechatronic systems. Closely comparable to Flender in industrial gear units, couplings and drive solutions for mining, cement, automotive and logistics sectors.
• Bonfiglioli: Italian manufacturer of gearmotors, drive systems and planetary gearboxes for industrial automation, wind energy and mobile machinery. Direct peer in industrial gearboxes and wind/wind-adjacent drivetrain components.
• David Brown (Clyde Blowers Capital): Specialist manufacturer of industrial gear units, gear systems and service solutions for heavy industries including mining, metals, marine and power. Highly comparable to Flender's industrial gearbox portfolio.
• Renk Group: German manufacturer of special gear units, propulsion systems and slide bearings serving military and industrial customers. Directly comparable to Flender in industrial gearboxes, with overlapping end markets in defense, marine and industrial drivetrains.
• Nord Drivesystems: Manufacturer of drive technology including gear units, electric motors, frequency inverters and servo drives. Directly competes with Flender across industrial gearbox and integrated drive applications.
• Sumitomo Heavy Industries: Japanese industrial group producing power transmission equipment, gear motors and precision drives. Comparable to Flender in industrial gearboxes and power transmission components.

Others

• Moventas: Finnish wind turbine gearbox manufacturer now wholly owned by Flender after the 2022 acquisition. Continues to operate as a recognized wind gearbox specialist brand, closely aligned with Flender's Winergy business.

Broad incumbents

• ZF Friedrichshafen: Large German automotive and industrial technology group producing transmissions, driveline and chassis technology as well as industrial drives. Overlaps with Flender in mechanical power transmission and wind/marine drivetrains, but operates a much broader portfolio.
• Siemens Energy: Global energy technology company and Flender's former parent. Overlaps in wind drivetrain systems (via Siemens Gamesa) and industrial power transmission solutions; a major incumbent across Flender's served markets.

Market position

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCqppWH07Rg2Zx631ldDHs7Q
• LinkedInlinkedin.com/company/flenderdrives

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Flender