Dunkermotoren ST25 SERIES Linear Motor
The Dunkermotoren ST25 Series Linear Motor is a high-performance solution for precise and dynamic linear motion. With continuous stall forces up to 90 N and peak forces reaching 780 N, it is ideal for automation, medical devices, and industrial machinery that demand accuracy and reliability. Key features include integrated high-resolution sin/co...
Read MoreThe Dunkermotoren ST25 Series Linear Motor is a high-performance solution for precise and dynamic linear motion. With continuous stall forces up to 90 N and peak forces reaching 780 N, it is ideal for automation, medical devices, and industrial machinery that demand accuracy and reliability.
Key features include integrated high-resolution sin/cos feedback with repeatability of ±12 µm and absolute accuracy of ±350 µm, ensuring exceptional positioning precision. Available in actuator (STA) and component (STB) versions, the ST25 Series offers flexibility for diverse application needs. The actuator version includes integrated polymer bearings, while the component version is designed for compact installations. With an IP67 protection rating, it is highly resistant to harsh environmental conditions.
This linear motor supports peak speeds of up to 8.9 m/s (STB version) and peak accelerations up to 586 m/s² (STA version), making it suitable for high-speed operations. Maintenance-free construction ensures long-term reliability, while the optional brake feature enhances safety.
The Dunkermotoren ST25 Series Linear Motor is a versatile and durable choice for industries requiring dynamic and precise motion solutions.
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Features
- Peak Force: 312N ~ 780N
- Peak Current: 20 Apk
- Continuous Stall Force: 42.5N ~ 90N
- Stroke / Hub mm: 27~309 mm
- Peak Acceleration: 394~586 m/s2
Selection Table
| Type | STA 2504 | STA 2506 | STA 2508 | STA 2510 | STB 2504 | STB 2506 | STB 2508 | STB 2510 | |
|---|---|---|---|---|---|---|---|---|---|
| Peak force @ 25°C ambient for 1 sec | N | 312 | 468 | 624 | 780 | 312 | 468 | 624 | 780 |
| Peak current @ 25°C ambient for 1 sec | Apk | 20 | |||||||
| Continuous stall force @ 25°C ambient | N | 42.5 | 59.5 | 75.1 | 90 | 42.5 | 59.5 | 75.1 | 90 |
| Continuous stall current @ 25°C ambient(1) | Arms | 1.92 | 1.8 | 1.7 | 1.63 | 1.92 | 1.8 | 1.7 | 1.63 |
| Force constant (sine commutation)(1) | N/Arms | 22.1 | 33.1 | 44.1 | 55.2 | 22.1 | 33.1 | 44.1 | 55.2 |
| Maximum working voltage | VDC | 325 | |||||||
| Peak acceleration (STA)(2) | m/s² | 394 | 483 | 542 | 586 | 394 | 483 | 542 | 586 |
| Maximum speed (STA)(3) | m/s | 5.3 | 5.3 | 4.7 | 4.2 | 5.3 | 5.3 | 4.7 | 4.2 |
| Peak acceleration (STB)(4) | m/s² | 223 | 223 | 235 | 256 | 223 | 223 | 235 | 256 |
| Maximum speed (STB)(5) | m/s | 8.9 | 6.6 | 5.4 | 4.6 | 8.9 | 6.6 | 5.4 | 4.6 |
| Repeatability | µm | 12 | |||||||
| By means of appropriate cooling plate or fan, the continuous force be increased by up to 20%(1) | |||||||||
| Based on a moving thrust rod with 27 mm stroke, no payload.(2) | |||||||||
| Based on a moving thrust rod with triangular move over maximum stroke, no payload.(3) | |||||||||
| Based on a moving forcer and no payload.(4) | |||||||||
| Based on a moving forcer with triangular move over maximum stroke, no payload.(5) | |||||||||
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.