Engineering
Sizing force, stroke, speed, installation position, motor, sensors and control.
Electric linear actuators · engineering & manufacturing from one source
S+R develops electric linear actuators from the load case outward – individually engineered, robustly built and traceably documented.
Solutions
The entry point may be a new development, retrofit, series assembly or repair. What matters is that the solution fits the problem: technically sound, commercially appropriate and traceable later in service.
Sizing force, stroke, speed, installation position, motor, sensors and control.
AP, SP and XP as proven design principles for standard-adjacent and custom solutions.
Machining, assembly, testing and documentation from one source.
Repair, spare parts and retrofit support, also for older electric linear actuators and installed units.
Limit switches, encoders, potentiometers, positioning and synchronous control systems.
Repeatable assemblies, defined variants and technical alignment for serial demand.
Industries
Many inquiries do not start with a product range. They start with a machine: flap, slide, format adjustment, test bench, retrofit or series assembly. The industries lead faster to the right technical question.
Custom electric actuators for machines that need reliable motion.
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Robust and precise linear motion for conveying, dosing, mixing and laboratory applications.
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Heavy electric actuators for locks, gates, slides and waterway infrastructure.
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Actuator solutions for heat, protected spaces and hard-to-access installation positions.
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Heavy, heat-resistant linear actuators for foundry and steelworks processes.
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Quiet, precise and hygienic adjustment for medical devices and equipment.
View solution routeReference projects
With technical challenge, solution route and result. This shows how a load case becomes a matching assembly.
A heavy electric actuator from a lock project returned to the S+R workshop after roughly 20 years in operation for service and service-life assessment.
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An existing machine geometry left very little axial space but required a robust lifting motion.
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An existing drive was no longer economical to repair and needed a mechanically compatible replacement.
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The product families show how S+R typically builds force line, space, protection, sensors and control. For customer projects, these principles are adapted, combined or extended.
Motors & motion control
We build the actuator. You choose the motor that drives it – from a robust three-phase motor to a servo drive for demanding motion control.
Robust, economical standard solution for reliable lifting and positioning motion – proven and long-lasting.
For precise, dynamic and networked motion we equip the actuator with all common servo motors – e.g. SEW, Beckhoff (EtherCAT), Fanuc, Siemens (PROFINET, SIMOTION) – exactly as it fits your control environment.
Customer-supplied servo motors are possible: you provide the preferred motor, we integrate it into the actuator.
Supported servo & control platforms (selection)



Process
We guide each project from the first load case to the right solution: technically sound, commercially appropriate and as specific as needed - no more and no less.
We assess force, stroke, environment, installation position and existing drawings, then identify early what really matters.
With experience from engineering, manufacturing and service, we select the product range, spindle, motor, sensors and protection class to fit the problem.
Once the technical route is clear, drawing, assembly, testing and documentation come from one source.
After delivery, repair, spare parts, retrofit and technical questions remain traceable and supported.
From one source
Series production, custom builds and service work together so load case, interface and documentation remain traceable for engineering, purchasing and maintenance.
Spindles, bearings and connection geometry are prepared so serial demand and spare-part supply remain traceable.
Service cases, retrofit and new designs are handled by people who understand both mechanics and the application.
When force, stroke, mounting or environment differ from standard, the solution is built from drawings, load case and manufacturing experience.
Component quality
An electric actuator is only as reliable as the combination of screw, motor, gearbox, coupling, brake, sensors and interface. Depending on the load case, S+R uses proven components from established manufacturers and integrates them into a testable S+R assembly.
Examples of project-specific component manufacturers. The actual selection depends on load case, environment, installation space, control concept and service requirements.
Typical use cases
This experience becomes relevant where standard catalogues end too early: high forces, limited space, harsh environments, retrofit and documented series capability.
Direct contact
Initial response within 24 hours from someone who can classify your technical request.