The FESTO 161250 DZF-25-10-A-P-A is a compact flat pneumatic cylinder engineered for linear motion applications where installation space is limited but stable actuation is still required. This model belongs to FESTO’s DZF series, a product family designed for short-stroke movement, compact machine layouts, and reliable operation in automation equipment. The exact configuration of this unit includes a 25 mm piston diameter, 10 mm stroke, double-acting operating principle, and a piston rod with M10x1.25 thread. FESTO also specifies guidance against torsion through the cylinder’s structural design and notes that position sensing can be implemented with proximity detection.
In practical industrial use, this type of cylinder is well suited for equipment builders who need a low-profile actuator for clamping, stopping, pressing, separating, ejecting, or positioning functions. Compared with larger standard round-body cylinders, a flat cylinder like the DZF can be integrated more easily into compact stations, transfer systems, and tooling assemblies. Its short overall form factor helps reduce interference with surrounding components while maintaining repeatable pneumatic motion.
Key Technical Data
| Item | Specification |
|---|---|
| Brand | FESTO |
| Part Number | 161250 |
| Model | DZF-25-10-A-P-A |
| Product Type | Flat cylinder |
| Series | DZF |
| Operation | Double-acting |
| Piston Diameter | 25 mm |
| Stroke | 10 mm |
| Piston Rod Thread | M10x1.25 |
| Pneumatic Connection | M5 |
| Cushioning | Elastic cushioning rings/pads at both ends |
| Mounting Position | Optional / any position |
| Position Sensing | Via proximity sensor |
| Housing Material | Aluminum, smooth anodized |
| Piston Rod Material | High-alloy stainless steel |
| Net Weight | 168 g |
| Operating Pressure | 0.1 MPa to 1 MPa (about 1 to 10 bar) |
The table above reflects the main published parameters for this exact model. The 168 g weight is commonly shown as the basic weight at 0 mm stroke, while the same datasheet family also indicates additional weight per 10 mm stroke, which is relevant when comparing variants with longer stroke lengths. For this exact 10 mm stroke configuration, the market listings and datasheet references consistently point to roughly 168 g as the practical quoted product weight.
Product Design and Performance Characteristics
One of the main strengths of the DZF-25-10-A-P-A is its space-saving flat design. In modern automation systems, machine builders often need to install actuators inside dense assemblies where conventional cylinders may be too tall or too bulky. The flat body architecture of the DZF series addresses that issue directly. It allows designers to place pneumatic motion components close to guides, fixtures, sensors, and workpiece handling structures without sacrificing access or layout efficiency.
Another important advantage is its double-acting operating mode, which means compressed air drives both extension and retraction. This gives the cylinder more controlled movement than a spring-return solution and generally improves cycle consistency in automated processes. For equipment that runs repetitive motion—such as pick-and-place tooling, workpiece separation, end-stop movement, or small clamping tasks—double-acting control helps maintain stable performance over long operating periods.
The cylinder also includes elastic cushioning at both ends, which helps reduce impact at stroke limits. That matters for machine longevity, because repeated hard end-position contact can increase vibration, noise, and component wear. In compact stations with short movement distances, cushioning is especially valuable because motion transitions can be abrupt. FESTO’s published configuration for this model identifies built-in elastic cushioning rings or pads at both ends, supporting smoother operation during repeated cycles.
The oval piston design and anti-torsion guidance are also notable. In many applications, engineers do not want the rod to rotate freely, especially when the attached tooling or stopper must maintain a defined orientation. FESTO’s documentation for this unit indicates protection against torsion/guide and a very limited angular play at the piston rod. This makes the actuator more suitable for guiding small tools or parts that need controlled linear travel without significant rotational deviation.
Materials, Reliability, and Industrial Suitability
From a materials standpoint, the DZF-25-10-A-P-A is built for standard industrial pneumatic environments. Published data indicates an aluminum housing with smooth anodized surface, a high-alloy stainless steel piston rod, and sealing materials that include NBR and TPE-U (PU) in the referenced datasheet family. This material combination is common in industrial pneumatic components because it balances corrosion resistance, structural rigidity, and service life.
Its M5 pneumatic connection and compact body make it suitable for machines where tubing, valve manifolds, and fittings must be kept neatly organized in a small footprint. The cylinder can be integrated into packaging systems, small transfer devices, light assembly tooling, electronics manufacturing equipment, handling stations, and compact automation modules. Because the stroke is only 10 mm, it is especially appropriate where short, precise linear displacement is needed rather than long travel.
The listed operating pressure range of 0.1 MPa to 1 MPa gives machine designers flexibility in ordinary compressed-air systems. That range broadly corresponds to 1 to 10 bar, which fits typical factory pneumatic supply conditions. In addition, the cylinder is specified for position sensing via proximity switch, which is useful when a machine requires end-position monitoring, feedback to a PLC, or cycle confirmation in semi-automatic and fully automatic equipment.
Why This Model Is Useful in OEM and Maintenance Applications
For OEM machine builders, the FESTO DZF-25-10-A-P-A offers a practical combination of compact size, controlled double-acting motion, and low-profile installation. These traits are important in machinery where every millimeter of mounting space affects the final layout. A standard cylinder may provide the needed force, but a flat cylinder often makes the assembly cleaner and easier to protect. That is particularly relevant in modular automation frames, indexing devices, test fixtures, and compact conveyors.
For maintenance and replacement work, using the exact part number 161250 helps reduce selection errors. Pneumatic cylinders can appear similar at first glance, but bore size, stroke, thread specification, mounting style, and anti-rotation features all affect compatibility. The published identification of this unit as DZF-25-10-A-P-A makes it easier for buyers and technicians to match the original actuator specification during spare-part procurement or retrofit planning.
Weight Information
For buyers who need shipping, mounting, or BOM reference data, the product weight is approximately 168 g. This figure is the most consistently published value for the basic configuration of this exact model and is suitable for quotation sheets, catalog descriptions, and general procurement use. When handling bulk machine design calculations, engineers should still review the latest official datasheet if accessory loads, mounting hardware, or application-specific calculations are involved.
Conclusion
The FESTO 161250 DZF-25-10-A-P-A is a compact and reliable flat pneumatic cylinder intended for short-stroke industrial motion tasks. With its 25 mm bore, 10 mm stroke, double-acting operation, anti-torsion design, elastic end cushioning, and approximate 168 g weight, it is a practical actuator for automation equipment that demands compact installation and stable linear movement. For machine builders, spare-parts suppliers, and industrial users, this model is a strong choice where space efficiency, repeatable performance, and recognized FESTO engineering are important.
