Festo DSR-25-180-P 11911 Quarter Turn Actuator Semi‑Rotary Vane Drive

Festo DSR‑25‑180‑P is a double‑acting, semi‑rotary vane drive. The force is transmitted directly to the drive shaft via a rotary vane. It features a durable die‑cast zinc housing and a spigot shaft suitable for direct load attachment. The swivel angle can be adjusted from 0° to 180° with end‑position cushioning provided by elastic cushioning rings/plates at both ends. The actuator is designed for precision quarter‑turn motion and meets the long‑term reliability demands typical of industrial automation tasks.

Applications:

• Automating quarter‑turn valves (butterfly valves, ball valves) in process industries

• Material handling and product orientation systems

• Packaging machinery indexing and product transfer

• Assembly automation component positioning

• Dosing and mixing operations in pharmaceutical equipment

Core Specifications:

• Product type: Double‑acting, semi‑rotary vane drive

• Swivel angle: 0° … 180° (adjustable)

• Theoretical torque at 6 bar: 5 Nm

• Operation mode: Double‑acting

• Design: Rotary vane

• Port size: M5

• Operating pressure range: 1.5 … 8 bar

• Ambient temperature: –10 °C … +60 °C

• Housing material: Die‑cast zinc

• Shaft type: Spigot shaft (nickel‑plated steel)

Advanced Specifications:

• Theoretical torque: 5 Nm at 6 bar

• Max. swivel frequency at 6 bar: 3 Hz

• Cushioning angle: 1.8°

• Cushioning type: Elastic cushioning rings/pads at both ends

• Mounting position: any

• Mounting type: through-hole

• Position sensing: none (use external sensors for position feedback)

• Seal material: NBR

• Operating medium: Compressed air as per ISO 8573‑1:2010 [7:-:-]

• LABS (PWIS) conformity: VDMA24364‑B2‑L

• Symbol: 00991265

• Product weight: approx. 500 g

• Shaft diameter: 12 mm

• Dimensions (L × W × H): 98 mm × 94.5 mm × 68.1 mm

System Integration:

• The actuator is part of the Festo DSR series. The stop system is separate from the rotary vane, so end‑position forces are absorbed by stop cams and cushioned by flexible plastic pads.

• Can be mounted using through‑holes; an external proximity sensor can be added for end‑position feedback.

• Designed for direct connection to quarter‑turn valves via a spigot or hollow flanged shaft.

• For detailed installation and pneumatic circuit diagrams, refer to the product hardware manual.

Standards & Compliance:
Refer to manufacturer official documentation for certification and compliance details (CE, RoHS, UKCA).

Related Products (upgrade path):

• DSR‑12‑180‑P – smaller size 12 (1 Nm torque, same function)

• DSR‑25‑180‑P – current model (size 25, 5 Nm torque)

• DSR‑40‑180‑P – larger size 40 (20 Nm torque, 1/4″ BSPP port)

• DRVS‑25‑180‑P – modern replacement (similar torque, compact housing)

• SMTO‑8E‑PS‑S‑LED‑24 – external T‑slot proximity sensor for position feedback (requires mounting accessory)