What RINGSPANN does

RINGSPANN GmbH is a German family-owned manufacturer of precision power transmission components and clamping fixtures, headquartered in Bad Homburg since its founding in 1944 by Dipl.-Ing. Albrecht Maurer. The company is organized around eight core product categories: freewheels (backstops, overrunning clutches, indexing, cage, housing, and internal freewheels), industrial brakes (hydraulic, electromagnetic, electrohydraulic, and rail-clamps), shaft-hub connections (shrink discs and cone clamping elements), heavy-duty couplings (flange, gear, cardan shafts and pin-and-bush couplings), industrial couplings (disc, jaw, flexible, and friction torque limiters), precision couplings (beam, metal bellow, elastomer, and safety), precision clamping fixtures (chucks and mandrels), and RCS remote-control cable systems. RINGSPANN is described as the international market leader in freewheels and holds proprietary inventions including the sprag lift-off X (1971) and the FXR backstop type (1982), with branded product lines SIKUMAT and RIMOSTAT for torque limiting dating from 1969 and 1962 respectively. The company operates 21 wholly-owned international subsidiaries and 10 production plants across Germany, Europe, the Americas, APAC, and Africa, supported by an ISO 9001 / ISO 14001 / EMAS / CSA-certified quality and environmental management footprint.

RINGSPANN sells primarily through a direct sales force embedded in its 21 national subsidiaries, supplemented by a B2B webshop for catalogue products with tiered unit pricing and approximately 10-working-day standard lead times. Customer-specific and engineered solutions — including a modular assembly approach, CAD-model libraries, and online coupling-selection calculation tools — are developed in cooperation with key OEM accounts and represent a meaningful share of revenue alongside standard catalogue items. Distribution is supplemented in specific regions and applications by channel partners and dealers (e.g., Marx Marinetechnik for marine RCS products; regional distributors in Egypt, Israel, Poland, Romania, Greece, and Ukraine).

The end-customer base spans industrial manufacturing and plant engineering, port and crane operations, mining, cement, steel and metal production, energy generation (including wind), e-bike/e-mobility, machine-tool and gear-manufacturing, railway, printing and paper, and marine/offshore — collectively over 7,500 active customers per year. Recent growth has been driven by a coordinated program of bolt-on acquisitions (AISCO US 2023, Kempf Germany 2024, StS Coupling and Steigerwald CNC Germany 2025) to broaden the coupling portfolio, the addition of greenfield subsidiaries in Brazil, Turkey, Chile, South Korea, and Bosnia-Herzegovina (2019–2024), capacity expansion via the BKSN 2 plant (2023), and a steady product-launch cadence including DA electromagnetic brakes, FHHS high-speed housing freewheels, and the MV FEM and DX brake series through 2025–2026.

Name

RINGSPANN

Legal name

RINGSPANN GmbH

Website

https://ringspann.de

Company type

Private

Founded year

1944

Operating status

Operating

Headcount range

251–500 employees

Short description

RINGSPANN is a German, family-owned manufacturer (founded 1944) of precision power transmission components — freewheels, industrial brakes, couplings, shaft-hub connections, clamping fixtures, and RCS remote-control cable systems — serving over 7,500 industrial OEM and end-user customers annually across 21 international subsidiaries and 10 production plants.

Ownership category

akta.pro rank

Product category

Industrial Power Transmission Components

NAICS

Mechanical Power Transmission Equipment Manufacturing (333613), Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing (333612), Bolt, Nut, Screw, Rivet, and Washer Manufacturing (332722)

SIC

General Industrial Machinery & Equipment (3560), Bolts, Nuts, Screws, Rivets & Washers (3452), Screw Machine Products (3451)

akta.pro primary industry

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

Keywords

• Power transmission components
• Industrial brake systems
• Freewheel manufacturing
• Precision clamping fixtures
• Remote control cable systems

Headquarters

HQ city

Bad Homburg

HQ country

Germany

HQ region

Europe

Offices24 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Power Transmission Component Sales: RINGSPANN generates revenue primarily through the manufacture and sale of power transmission components and clamping fixtures. Products are sold via direct sales through international subsidiaries, a Webshop for catalogue products, and through channel distributors. The business model includes both standard catalogue products and custom, customer-specific solutions developed in cooperation with key customers.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

RINGSPANN manufactures and sells power transmission components, industrial brakes, and precision clamping fixtures across eight core product lines: freewheels (backstops, overrunning clutches, cage freewheels, housing freewheels, internal freewheels), industrial brakes (disc, drum, electromagnetic, electrohydraulic and storm types), shaft-hub connections, heavy-duty couplings, industrial couplings, precision couplings, precision clamping fixtures, and RCS remote control cable systems. The company serves industrial OEMs and equipment operators with a catalogue programme available through direct sales subsidiaries, a B2B Webshop, and regional distributors, complemented by customer-specific engineering solutions developed in cooperation with key customers.

Product overview

RINGSPANN is a premium manufacturer of power transmission components, industrial brakes, and precision clamping fixtures. The comprehensive catalogue programme encompasses eight core product categories: (1) Freewheels (backstops, overrunning clutches, indexing freewheels, cage freewheels E/SF/SFB/SF-P series, housing freewheels FH/FHHS, internal freewheels) - RINGSPANN is the international market leader in freewheels; (2) Industrial Brakes including disc brakes (HS series hydraulic, DA series electromagnetic), drum brakes (DT series electrohydraulic), storm brakes, MV FEM electromagnetic brakes, DX series electrohydraulic brakes, and heavy-duty rail clamps, plus BCS 600 control systems; (3) Shaft-Hub-Connections featuring shrink discs (RLK 608 E), cone clamping elements (RLK...TC), clamping systems for torque motors (RTM), and star spring washers; (4) Heavy-Duty Couplings including flange couplings (RFK), grid couplings, gear couplings, cardan shafts, and pin & bush couplings; (5) Industrial Couplings including disc couplings, jaw couplings, friction torque limiters (RIMOSTAT RSHD), flexible couplings, force limiters, and cone clamping couplings; (6) Precision Couplings including beam couplings, positive torque limiters (SIKUMAT), metal bellow couplings, elastomer couplings, intermediate shaft couplings, and safety couplings; (7) Precision Clamping Fixtures including precision chucks, mandrels, and clamping clutches; (8) RCS Remote Control Systems including push/pull cables, bowden cables, control cables, lever systems, and throttle pedals. RINGSPANN positions itself as a one-stop shop offering catalogue products, customer-specific solutions, and product-related services including CAD models, online calculation programs, and webshop access. The company operates 10 production plants worldwide and serves over 7,500 customers annually.

Differentiator

Problem solved

Functional benefit

Brands

• RCS® Fernbetätigungen: Remote control systems including push/pull cables, bowden cables, control cables, control lever systems, and throttle pedal systems
• RIMOSTAT®
• SIKUMAT®
• RINGSPANN StS
• RINGSPANN Kempf

Products and services

• Freewheels (backstops, overrunning clutches, indexing freewheels, cage freewheels, housing freewheels, internal freewheels) RINGSPANN's flagship product category, in which the company is the international market leader. Includes backstops, overrunning clutches, indexing freewheels, cage freewheels (E, SF, SFB, SF-P series), housing freewheels (FH, FHHS) and internal freewheels serving gearboxes, conveyors, E-bike drives, hoists and material handling equipment.
• Industrial Brakes (disc, drum, electromagnetic, electrohydraulic, storm, rail clamps) Comprehensive industrial brake portfolio including hydraulic disc brakes (HS series), electromagnetic disc brakes (DA series), electrohydraulic disc and drum brakes (DS, DT and new DX series), storm brakes for wind power, MV FEM electromagnetic brakes, and heavy-duty rail clamps for port facilities.
• Shaft-Hub-Connections (shrink discs, cone clamping elements, RTM clamping systems, star spring washers) Keyless shaft-hub connections including RLK 608 E two-part shrink discs, RLK…TC cone clamping elements for maximum centering accuracy, RTM clamping systems for torque motors and Sternfeder star spring washers used as ball bearing compensating discs.
• Heavy-Duty Couplings (flange, grid, gear, cardan shafts, pin & bush couplings) Heavy-duty coupling range for industrial applications, including RFK flange couplings, steel/grid couplings, gear couplings, cardan shafts (universal joints, RINGSPANN Kempf range) and pin & bush couplings with torques from 8,500 Nm to 285,000 Nm.
• Industrial Couplings (disc, jaw, friction torque limiters, flexible, force limiters, cone clamping couplings) General industrial coupling portfolio including disc couplings, jaw couplings, RIMOSTAT RSHD friction torque limiters with high torque constancy during slipping, flexible couplings, force limiters and cone clamping couplings.
• Precision Couplings (beam, metal bellow, elastomer, SIKUMAT positive torque limiters, safety couplings) Precision couplings for machine tools and demanding applications, including beam couplings, precision springs, SIKUMAT positive torque limiters, metal bellow couplings, elastomer couplings, intermediate shaft couplings and safety couplings. Range expanded by StS Coupling and Steigerwald CNC acquisitions in 2025–2026.
• Precision Clamping Fixtures (precision chucks, mandrels, clamping clutches) Precision workholding solutions for the manufacture of gears and transmission components, including precision clamping chucks, precision clamping mandrels and clamping clutches for machine tools and gear production.
• RCS Remote Control Systems (push/pull cables, Bowden cables, control cables, control levers, throttle pedals) Remote control cable systems (Fernbetätigungen) manufactured by RINGSPANN RCS GmbH in Oberursel, including push/pull cables, Bowden cables, control cables, control lever systems and throttle pedal systems for sanitary/drainage, marine technology, and industrial remote control applications.

Quantifiable outcome

• RINGSPANN cage freewheels provide more than three times the torque capacity of sleeve freewheels, with nominal torque ratings up to 260 Nm.
• +3 more outcomes

Named customers13 records

Segments10 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

16 partnerships are on record, tiered minor and core.

• Marx Marinetechnik (Friedrich Marx GmbH & Co. KG)minorChannel Partner/ Reseller/ DistributorMarx Marinetechnik is listed as a dealer/distributor for RINGSPANN RCS (Remote Control Systems) products in Germany, specifically for marine technology applications. Located at Wendenstraße 8-12, 20997 Hamburg.
• Carl Werthenbach Konstruktionsteile GmbH & Co. KGminorChannel Partner/ Reseller/ DistributorListed as a distribution partner for RINGSPANN industrial components in Germany. Located at Grafenheider Straße 101, 33729 Bielefeld. Represents RINGSPANN in the German industrial components distribution market.
• Altman GmbH & Co. KGminorChannel Partner/ Reseller/ DistributorListed as a distribution partner for RINGSPANN products. Located at Theodor-Heuss-Straße 2, 85221 Dachau, Germany.
• a+s vertriebs gmbhminorChannel Partner/ Reseller/ DistributorListed as a distribution partner for RINGSPANN products. Located at Jenfelder Str. 74, 22045 Hamburg, Germany.
• Shofree Trading Co.minorChannel Partner/ Reseller/ DistributorRINGSPANN's distribution partner for Egypt. Located at 218 – Emtedad Ramsis (2), 2775 Nasr City, Cairo, Egypt. Covers the Egyptian market for power transmission components.
• Getter Group GG YaromminorChannel Partner/ Reseller/ DistributorRINGSPANN's distribution partner for Israel. Located at 4 Boltimor St., Petah Tikva, 4951015, Israel. Covers the Israeli market for RINGSPANN products.
• RADIUS-RADPOL Wiecheć Sp.J.minorChannel Partner/ Reseller/ DistributorRINGSPANN's distribution partner for Poland. Located at Ul. Pasjonatów 3, 62-070 Dąbrowa, Poland.
• ANASTASOPOULOS G. S.A.minorChannel Partner/ Reseller/ DistributorRINGSPANN's distribution partner for Greece. Located at 60 Doridos, Egaleo 122 42, Athens, Greece.
• Industrial Seals and Rolls S.R.L.minorChannel Partner/ Reseller/ DistributorRINGSPANN's distribution partner for Romania, Bulgaria, and Moldova. Located at Str. Depozitelor, Nr. 29, 110078 Pitești, Romania.
• START-UP LLC.minorChannel Partner/ Reseller/ DistributorRINGSPANN's distribution partner for Ukraine. Located at Saltivske Hwy, 43, letter G-3, office 101, Kharkiv 61038, Ukraine.
• StS Coupling GmbH (Acquired)coreOthersGerman precision coupling manufacturer acquired in 2025 to expand RINGSPANN's precision couplings range. Now operating as RINGSPANN StS GmbH, located in Niedernberg, Germany. Represents a full acquisition rather than a partnership.
• Kempf (Acquired)coreOthersGerman coupling manufacturer for cardan shafts/acquired in 2024. Now operating as RINGSPANN Kempf GmbH, located in Gersfeld (Rhön), Germany. Specializes in cardan shafts with torques from 8,500 to 285,000 Nm. Represents a full acquisition rather than a partnership.
• AISCO (Acquired)coreOthersUS coupling manufacturer for gear couplings and universal joints, acquired in 2023. Represents a full acquisition expanding RINGSPANN's North American presence and product range.
• Ostelectric (Acquired)coreOthersItalian brake manufacturer acquired in 2018, through which RINGSPANN introduced electrohydraulic brakes DS and DT series. Represents a full acquisition.
• Sprag Components (Acquired)coreOthersSouth African freewheel manufacturer acquired in 2017, strengthening RINGSPANN's freewheel product portfolio and African market presence. Represents a full acquisition.
• SIAM (Acquired)coreOthersFrench freewheel manufacturer acquired in 1978. Now operating as RINGSPANN France S.A. (SIAM brand retained). One of RINGSPANN's earliest acquisitions, expanding its European freewheel market coverage.

Scale indicators8 records

Recent moves25 records

Expansion highlights6 records

Direct peers

• Mayr Power Transmission: Germany-based Mayr is a leading European manufacturer of industrial brakes, safety brakes, and clutches, directly competing with RINGSPANN's brake and torque limiter product lines in elevators, cranes, and machine tools.
• R+W Coupling Technology: Specialist German manufacturer of precision couplings (metal bellow, elastomer, safety couplings) that directly competes with RINGSPANN StS and the precision couplings portfolio, serving machine tool, servo, and measurement applications.
• KTR Systems: German manufacturer of industrial couplings, torque limiters, and brake systems that directly overlaps with RINGSPANN's industrial couplings, heavy-duty couplings, and SIKUMAT/RIMOSTAT torque limiter portfolios.
• Formsprag / Warner Electric: Formsprag (part of Warner Electric / Altra Motion) manufactures freewheels, sprag clutches, and overrunning clutches with comparable product families to RINGSPANN's freewheel division, addressing the same industrial OEM and aftermarket channels.
• Jakob Antriebstechnik: German mid-market manufacturer of couplings, brakes, and torque limiters with a product portfolio highly comparable to RINGSPANN's couplings, brakes, and clamping fixture lines, serving similar industrial OEM customers.
• Stieber (Regal Rexnord): Stieber, now part of Regal Rexnord, is one of the closest direct competitors to RINGSPANN in industrial freewheels, backstops, and overrunning clutches, serving the same industrial OEM customers across cranes, conveyors, and gearboxes.

Broad incumbents

• Regal Rexnord: Large US-listed industrial conglomerate that owns Stieber, Formsprag, and Warner Electric, offering freewheels, couplings, bearings, and power transmission solutions across the same end markets as RINGSPANN, but at much greater scale and breadth.
• Bonfiglioli: Italian global manufacturer of gearboxes, gearmotors, and drive systems, broadly overlapping RINGSPANN's industrial drive component applications, but operating as a much larger incumbent with a broader product scope.
• NORD Drivesystems: German family-owned manufacturer of gear units, motors, and drive electronics with overlapping customer base in industrial plant engineering, materials handling, and bulk material handling where RINGSPANN supplies brakes and freewheels.
• Tsubaki (Tsubakimoto Chain): Japanese global manufacturer of power transmission products including chains, sprockets, couplings, and clutches, with comparable applications in industrial machinery, conveyors, and automotive manufacturing, competing with RINGSPANN across multiple product lines globally.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/RingspannGmbH
• LinkedInlinkedin.com/company/ringspanngmbh
• Xx.com/Ringspann
• Facebookfacebook.com/RINGSPANNDeutschland

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries23 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 RINGSPANN