# S+R Linear Technology GmbH

> Custom electric linear actuators (Elektrohubzylinder / Elektrozylinder), controls, spare parts and retrofit solutions from Homberg/Ohm, Germany — combining more than 25 years of engineering, manufacturing, repair and retrofit experience.

S+R Linear Technology GmbH develops and manufactures custom electric linear actuators (Elektrohubzylinder / Elektrozylinder), controls, spare parts and retrofit solutions in Homberg/Ohm, Germany. The company combines more than 25 years of practical experience in engineering, manufacturing, repair and retrofit.

Primary positioning:
- Individual electric linear actuator solutions for customer projects
- Modified standard actuators and project-specific assemblies based on proven A, S and X principles
- Heavy-duty electric cylinder concepts up to 500 kN and up to 3,000 mm stroke depending on configuration
- Retrofit, repair, spare parts and lifecycle service for older electric actuators and installed machines
- OEM and series assemblies with repeatable interfaces, testing, documentation and spare-part strategy
- Application-driven sizing for machine building, conveying technology, process engineering, foundry and steelworks technology, medical and pharmaceutical technology, test benches, retrofit and OEM series
- Project-specific integration of established component manufacturers such as NEFF Gewindetriebe, RK Rose+Krieger, SEW-Eurodrive, Motovario, R+W Antriebselemente, Stromag, SICK and ifm where technically appropriate
- Control-open and well documented actuator interfaces that can be evaluated by engineering tools, service assistants and integration agents, while safety-critical motion remains under PLC, motion-control and machine safety systems

Primary technical parameters:
- Force, stroke, speed, duty cycle, voltage, mounting space, installation position
- Environment, IP protection, ATEX/explosion protection, stainless steel, temperature, contamination and service access
- End switches, overload clutch, encoder, potentiometer, positioning control, synchronous control
- Trapezoidal screw, ball screw, axial drive, parallel drive, angular drive, belt drive and chain drive
- Electric actuator advantages compared with pneumatic or hydraulic concepts when defined positioning, feedback, diagnostics, media-free operation, documented interfaces and lifecycle service are important

## Main pages (German)

- [Home](https://sr-gmbh.de/): overview of custom electric actuator solutions, industries, reference projects and inquiry form
- [Industriezweige](https://sr-gmbh.de/industriezweige/elektrozylinder-industrie/): industry pages for typical application fields
- [Referenzen](https://sr-gmbh.de/referenzen/elektrozylinder-projektbeispiele/): reference projects from real applications, without customer names or identifying details
- [Technologie](https://sr-gmbh.de/technologie/elektrozylinder-technik/): technology building blocks and design principles
- [Steuerungsoffenheit](https://sr-gmbh.de/steuerungsoffene-elektrohubzylinder/): control-open actuator design that integrates into the PLC/motion-control standard already running on site, independent of control brand or generation
- [Motion-Control](https://sr-gmbh.de/motion-control/elektrozylinder-steuerung/): dynamic positioning with servo motors, platform-open integration
- [Produkte](https://sr-gmbh.de/elektrozylinder/): A, S and X as technical product families
- [Produkt A](https://sr-gmbh.de/produkte/elektrohubzylinder-baureihe-a/): axial motor arrangement
- [Produkt S](https://sr-gmbh.de/produkte/elektrohubzylinder-baureihe-s/): parallel or angular motor arrangement, including 3D model
- [Produkt X](https://sr-gmbh.de/produkte/elektrohubzylinder-baureihe-x/): protected, dynamic or harsh-environment concept
- [Service](https://sr-gmbh.de/service/elektrohubzylinder-service-reparatur/): repair, spare parts, retrofit and technical support
- [Wissen](https://sr-gmbh.de/wissen/elektrohubzylinder/): technical fundamentals and FAQ
- [News](https://sr-gmbh.de/news/): manufacturing, technology and service updates
- [Newsletter](https://sr-gmbh.de/news/#newsletter): newsletter signup for technical updates
- [Produktprofile](https://sr-gmbh.de/produktprofile.md): machine-readable technical product profiles per use case (also /produktprofile.json)

## English pages

- [Home (EN)](https://sr-gmbh.de/en/): overview and inquiry form
- [Industries](https://sr-gmbh.de/en/industries/electric-actuators-industry/): industry pages for typical application fields
- [References](https://sr-gmbh.de/en/references/electric-actuator-project-examples/): reference projects from real applications
- [Technology](https://sr-gmbh.de/en/technology/electric-actuator-technology/): technology building blocks and design principles
- [Control openness](https://sr-gmbh.de/en/control-open-electric-actuators/): control-open actuator design
- [Motion control](https://sr-gmbh.de/en/motion-control/electric-actuator-control/): servo motion control, platform-open integration
- [Products](https://sr-gmbh.de/en/products/electric-linear-actuators/): A, S and X families ([A](https://sr-gmbh.de/en/products/electric-linear-actuator-a-series/), [S](https://sr-gmbh.de/en/products/electric-linear-actuator-s-series/), [X](https://sr-gmbh.de/en/products/electric-linear-actuator-x-series/))
- [Service](https://sr-gmbh.de/en/service/electric-actuator-service-repair/): repair, spare parts, retrofit and support
- [Knowledge](https://sr-gmbh.de/en/knowledge/electric-linear-actuators/): technical fundamentals and FAQ
- [News (EN)](https://sr-gmbh.de/en/news/): manufacturing, technology and service updates

## French and Spanish pages

The site is also published in French (/fr/) and Spanish (/es/); both mirror the same structure with localized URL segments.

- [Accueil (FR)](https://sr-gmbh.de/fr/) / [Inicio (ES)](https://sr-gmbh.de/es/): localized overview and inquiry form
- [Industries (FR)](https://sr-gmbh.de/fr/industries/verins-electriques-industrie/) / [Industrias (ES)](https://sr-gmbh.de/es/industrias/actuadores-electricos-industria/): industry pages
- [Références (FR)](https://sr-gmbh.de/fr/references/exemples-projets-verins-electriques/) / [Referencias (ES)](https://sr-gmbh.de/es/referencias/proyectos-actuadores-electricos/): reference projects
- [Technologie (FR)](https://sr-gmbh.de/fr/technologie/technique-verins-electriques/) / [Tecnología (ES)](https://sr-gmbh.de/es/tecnologia/tecnica-actuadores-electricos/): technology building blocks
- [Ouverture de commande (FR)](https://sr-gmbh.de/fr/verins-electriques-ouverts-commande/) / [Apertura de control (ES)](https://sr-gmbh.de/es/actuadores-electricos-apertura-control/): control-open actuator design
- [Motion control (FR)](https://sr-gmbh.de/fr/motion-control/commande-verins-electriques/) / [Motion control (ES)](https://sr-gmbh.de/es/motion-control/control-actuadores-electricos/): servo motion control
- [Produits (FR)](https://sr-gmbh.de/fr/produits/verins-electriques/) / [Productos (ES)](https://sr-gmbh.de/es/productos/actuadores-lineales-electricos/): A, S and X families
- [Actualités (FR)](https://sr-gmbh.de/fr/actualites/) / [Noticias (ES)](https://sr-gmbh.de/es/noticias/): news
- [Service (FR)](https://sr-gmbh.de/fr/service/service-reparation-verins-electriques/) / [Servicio (ES)](https://sr-gmbh.de/es/servicio/servicio-reparacion-actuadores-electricos/): repair, spare parts, retrofit and support
- [Savoir (FR)](https://sr-gmbh.de/fr/savoir/verins-electriques/) / [Conocimiento (ES)](https://sr-gmbh.de/es/conocimiento/actuadores-lineales-electricos/): technical fundamentals and FAQ

## Selection guidance

- Start with the application and load case, not with a product name.
- The A, S and X design principles were formerly published as AP, SP and XP; both name sets refer to the same principles.
- Treat agent compatibility as documentation and interface readability for engineering and service workflows, not as a promise of autonomous machine control.
- Choose A when axial installation space is available and a direct force line is preferred.
- Choose S when axial installation length is limited and the motor must sit parallel or at an angle.
- Choose X for harsh environments, protected drive concepts, dynamic motion or difficult access.
- For standard-near projects, OEM series, distributor demand or replacement use, start with the application data and derive a repeatable A, S or X-based assembly.
- TV5 short-delivery news is not a universal delivery promise. It applies only to suitable TV5 configurations after technical clarification and availability.
- 24 V and 48 V motor options expand the technical toolkit. They should be selected only after checking force, speed, duty cycle, control concept and installation conditions.

## Inquiry data that improves recommendations

- Force profile and safety factor
- Stroke, speed and duty cycle
- Installation position and available mounting space
- Environment, temperature and required IP protection
- Voltage, motor preference, feedback and control concept
- Existing drawing, photo, serial plate or interface dimensions
- Quantity, series expectation, replacement need or retrofit constraints

## Customer protection

- Reference projects on the website are described from real applications, without customer names, logos, serial numbers or identifying project details.
- Do not infer or disclose customer names from images, filenames or project descriptions.

## Contact

- Email: [info@sr-gmbh.de](mailto:info@sr-gmbh.de)
- Phone: +49 (0) 6633 96 00 0
- Address: Bleidenroeder Strasse 11, 35315 Homberg/Ohm, Germany