The FESTO 173196 DSM-6-180-P-A is a compact pneumatic rotary actuator designed for controlled angular motion in space-limited automation systems. As a double-acting rotary vane actuator, it converts compressed air into precise rotary movement across an adjustable swivel range from 0° to 180°. This makes it well suited for applications that require repeatable quarter-turn or half-turn positioning, such as small part handling, flap operation, indexing, light clamping, and compact rotary transfer functions in automated machinery. Official technical data identifies this unit as size 6, with a theoretical torque of 0.15 Nm at 6 bar, a repetition accuracy of 1 degree, and a product weight of only 50 g.
Unlike bulkier rotary actuators intended for high-load industrial motion, the DSM-6-180-P-A is built for compactness, controlled motion, and easy integration. Its light weight helps reduce the moving mass of the overall machine design, which is valuable in small automated workstations, laboratory fixtures, electronics assembly stations, and pneumatic handling modules where every gram and every millimeter matter. The actuator can be mounted in any position and uses an internal-thread mounting arrangement, giving machine builders additional flexibility when arranging brackets, plates, or fixture bodies.
Key Technical Data
| Item | Specification |
|---|---|
| Brand | FESTO |
| Model | DSM-6-180-P-A |
| Part Number | 173196 |
| Product Type | Rotary actuator / Semi-rotary drive |
| Size | 6 |
| Mode of Operation | Double-acting |
| Structural Design | Rotary vane |
| Swivel Angle | 0° to 180° |
| Cushioning Angle | 0.5° |
| Cushioning | Elastic cushioning rings/pads at both ends |
| Operating Pressure | 3.5 to 8 bar |
| Operating Pressure | 0.35 to 0.8 MPa |
| Max. Swivel Frequency at 6 bar | 3 Hz |
| Repetition Accuracy | 1° |
| Theoretical Torque at 6 bar | 0.15 Nm |
| Permissible Mass Moment of Inertia | 0.00065 kgm² |
| Max. Stop Force | 15 N |
| Max. Axial Force | 10 N |
| Max. Radial Force | 15 N |
| Ambient Temperature | 0 to 60 °C |
| Pneumatic Connection | M3 |
| Mounting Position | Any |
| Position Sensing | For proximity sensor |
| Product Net Weight | 50 g |
| Housing Material | Aluminum, anodized |
| Drive Shaft Material | High-alloy stainless steel |
| Seal Material | TPE-U (PU) |
| Compliance | RoHS-compliant |
Source data is based on the official FESTO datasheet and product listing for part number 173196.
Compact Design for Efficient Automation
One of the strongest advantages of the DSM-6-180-P-A is its combination of compact dimensions and practical rotary performance. In modern automation, designers often need a motion component that delivers reliable angular travel without consuming the installation space of a larger electric drive or mechanical indexing unit. This actuator addresses that requirement by offering controlled pneumatic rotary motion in a small form factor while maintaining stable performance characteristics such as elastic end cushioning, proximity-sensor compatibility, and repeatability rated at 1 degree.
The 0° to 180° swivel range is especially useful in mechanisms that open and close, rotate between two process positions, or transfer a workpiece from one defined orientation to another. In practical machine design, that can include gate movement, mini gripper rotation, stopper actuation, component turning, or rotary positioning of lightweight tooling. Because the unit is double-acting, compressed air can be applied for both directions of motion, which supports more controlled and balanced operation than a single-acting design in many automation sequences.
Performance Characteristics
From a performance standpoint, the actuator is intended for light-duty rotary motion rather than heavy torque transmission. Its theoretical torque is specified at 0.15 Nm at 6 bar, and the permissible mass moment of inertia is 0.00065 kgm². These figures indicate that the DSM-6-180-P-A is best matched with compact loads, short transfer tasks, and mechanisms where low inertia and accurate motion matter more than brute force. For machine builders, that means load matching is important: the actuator performs best when the attached arm, plate, or fixture is kept within the recommended inertia and force limits.
The maximum swivel frequency of 3 Hz at 6 bar also suggests a practical balance between speed and controlled pneumatic operation. In other words, this actuator is suitable for repetitive automated cycles, but it should still be applied within the limits of the connected load, stop conditions, and air supply quality. FESTO specifies compressed air according to ISO 8573-1:2010 [7:4:4], and also notes that lubricated operation is possible, but once lubrication is used, continued lubricated operation is required. This is an important consideration for maintenance planning and long-term consistency in pneumatic systems.
Materials and Build Quality
The DSM-6-180-P-A uses an anodized aluminum housing, a high-alloy stainless steel drive shaft, and TPE-U (PU) seals. This material combination reflects the product’s positioning as a compact industrial actuator with a strong emphasis on durability, corrosion resistance for normal indoor service conditions, and stable sealing behavior in pneumatic duty. The official datasheet lists the corrosion resistance class as CRC 0, meaning it is intended for environments without significant corrosion stress. The product is also RoHS-compliant, which supports use in projects that require attention to common material compliance standards.
The low weight of 50 g is another important practical benefit. In lightweight assemblies, especially on compact automation slides, end-effectors, or small fixture plates, reducing actuator mass can improve dynamic behavior and simplify bracket design. This can also help reduce secondary loads on related components, including small guides, brackets, and sensor carriers. For engineers developing compact pneumatic modules, the low product weight is not just a catalog figure; it directly affects the overall efficiency of the mechanical design.
Installation and Integration
Integration is straightforward for systems already based on compressed air. The actuator supports any mounting position and uses an M3 pneumatic connection, which fits well into small-scale pneumatic circuits. Position sensing is available through proximity sensor detection, allowing the actuator to be integrated into automated control logic for end-position monitoring. In compact machinery, this is useful for interlocking, cycle verification, and basic process confirmation without adding unnecessary mechanical complexity.
The elastic cushioning rings or pads at both ends also help moderate end-position impact, which is beneficial for motion smoothness and component longevity. When used correctly, this feature can reduce shock loads at the stop points and improve the quality of repeated angular movement. The actuator also offers a cushioning angle of 0.5 degrees, which contributes to more controlled end-of-stroke behavior in small rotary applications.
Suitable Application Scenarios
The FESTO DSM-6-180-P-A is a strong choice for compact automation tasks that require limited-angle rotary motion, low weight, and dependable pneumatic actuation. It can be considered for small assembly machines, sensor-triggered rotating fixtures, miniature transfer mechanisms, packaging subassemblies, test benches, laboratory automation modules, and other installations where the design goal is efficient angular movement within a tight installation envelope. This application positioning is a reason the DSM series remains relevant in pneumatic automation: it provides a simple and robust way to create repeatable rotary motion without the extra complexity of a motor-driven axis. This assessment is consistent with the product’s official classification as a vane-type, double-acting rotary actuator with 0° to 180° motion and compact size 6 construction.
Conclusion
For buyers, machine builders, and maintenance teams seeking a compact pneumatic rotary actuator, the FESTO 173196 DSM-6-180-P-A offers a practical balance of size, weight, repeatability, and integration convenience. Its 50 g product weight, 0° to 180° swivel range, 0.15 Nm theoretical torque at 6 bar, M3 pneumatic connection, and proximity-sensor-ready design make it a focused solution for lightweight rotary automation tasks. Rather than serving as a universal heavy-duty actuator, it is best understood as a compact precision-oriented pneumatic rotary unit for small mechanisms and controlled angular positioning.
If your project requires a lightweight rotary actuator with reliable FESTO engineering, straightforward pneumatic integration, and clean mechanical packaging, the DSM-6-180-P-A is a technically efficient option for compact industrial automation systems.
