EMS 21 – Powerful actuator for accurate web positioning
EMS 21
Description
BST EMS 21 combines robust design with precise, maintenance-free performance. It plays a key role in BST's web guiding systems, ensuring accurate and dynamic web correction across multiple production processes.
Its electric motor with ball screw drive guarantees smooth movement under load, while the integrated absolute position feedback ensures repeatability and control accuracy. Thanks to its plug-and-play design, EMS 21 is easy to install and suitable for both new machines and system upgrades.
EMS 21 provides immediate and reliable correction of web position deviations, ensuring stability and product quality. Its compact and robust design allows for easy integration into BST guiding systems.
What are your values?
- High positioning force for precise control of web tension and tracking
- Maintenance-free operation ensures maximum uptime
- Quick installation via plug-and-play design
- Compact construction for flexible mounting
- Reliable feedback system for repeatable accuracy
EMS 21 – Reliable power and precision for demanding web guiding applications.
Technical details
Nominal positioning force
840 N | 1.680 N
Nominal positioning speed
20 mm/s | 10 mm/s
Available strokes
100 mm | 195 mm
Position feedback
±9 V (max. 2 mA)
Electrical connection
via BST connecting cable
Certification
CE/UL 2011, CSA C22.2/RoHS compliant
Protection class
IP 54
Download the product sheet
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EMS 21 product sheetMore information about the actuator EMS 21.BST.HELP Open
Downloads
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Web guiding brochureMore information about our web guiding systems, components and functionality.BST.HELP Open -
EMS 21 product sheetMore information about the actuator EMS 21.BST.HELP Open
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UL-certificate of complianceOur web guiding components are UL-certified.BST.HELP Open -
Brochures at a glanceGet an overview about our product portfolio and download the needed brochures via QR code.BST.HELP Open
Videos
Get to know our web guiding solutions
Precision in motion that’s where actuators make the difference. BST actuators translate control signals into accurate mechanical adjustments. Whether pivoting frames, linear guides, or high-speed actuators: they reposition the web quickly, powerfully, and with repeatable accuracy, even at high speeds or with demanding materials.
With robust construction, high dynamics, and precise controllability, these actuators ensure smooth, stable web guiding. They form the strong backbone of every web guiding system.
EMS 21 – Reliability and power you need to experience!
Stable web control is not possible without reliable actuators. Our systems work reliably with simple plug-and-play installation. Connect the web, switch on the power, and the control system is ready for use. Customers benefit from worldwide use in accordance with international standards. Particularly remarkable is the combination of robust technology and immediate readiness for use.
Ingo EllerbrockProduct Management Guiding & Control