Overview
The Festo 170851 DFM-25-50-P-A-GF is a compact, double-acting guided drive pneumatic cylinder designed for controlled linear motion with integrated lateral guidance. Operating at 10 bar maximum pressure, this unit combines a 25mm piston diameter with a 50mm stroke, delivering smooth, guided motion suitable for precision positioning and material handling in factory automation, assembly lines, and lightweight clamping applications.
Key Features
- Integrated Guide Design — Plain-bearing guide reduces side-load stress, extending component life in precision applications
- Double-Acting Operation — Powered motion in both directions; suitable for controlled advance and retract cycles
- Elastic Cushioning — Flexible cushioning rings at both rod and cap ends minimize shock and vibration during stroke reversal
- Yoke Operating Mode — Yoke-mounted drive unit with 50mm distance from load center of gravity to plate, enabling stable load positioning
- Position Detection Ready — Via proximity switch mounting position for cycle verification and safety interlocking
Technical Specifications
Comprehensive technical data verified from manufacturer documentation:
- Piston Diameter: 25 mm
- Stroke Length: 50 mm
- Operating Pressure Range: 0.15–10 bar
- Maximum Pressure: 10 bar
- Mode of Operation: Double-acting
- Cushioning: P (flexible cushioning rings/plates at both ends)
- Guide Type: Plain-bearing with integrated guidance
- Drive Unit Type: Yoke-mounted
- Load Capacity: Approximately 30 kg (nominal)
- Position Sensing: Via proximity switch compatible
- Operating Medium: Compressed air to ISO 8573-1:2010 [7:4:4]; lubricated operation possible
- Structural Design: Monobloc cylinder with integrated guide tubes
- Symbol Reference: 00991737
Typical Applications
- Precision positioning and linear transfer in light-duty assembly systems
- Material handling and feeding mechanisms requiring low deflection
- Lightweight clamping and work-holding fixtures
- Pick-and-place and robotic end-effector motion
- Laboratory and process automation requiring repeatable, guided motion
- Servo-type cycling with position feedback and cycle monitoring
Compatibility & Replacements
Compatible With
- Festo DGCI, DNGCI, and DFM series pneumatic control systems
- Pneumatic manifolds with NG6 (ISO 4401) ported cavity (requires adapter block)
- Proximity sensors (inductive and capacitive) for position feedback and cycle verification
- ISO 6162 (SAE ported) and ISO 4401 industrial pneumatic circuits
- Standard compressed air systems conforming to ISO 8573-1:2010 cleanliness classification [7:4:4]
Replaces / Drop-In Replacement For
The Festo DFM-25-50-P-A-GF is part of the DFM family. Related models in the same series with different bore and stroke combinations include DFM-20-50, DFM-25-75, DFM-32-50, and other DFM variants. Verify mounting plate and port configuration when substituting units. Consult Festo application engineering or your system integrator to confirm direct drop-in compatibility with legacy systems.
Works With
- Pneumatic Networks: ISO 4401, ISO 6162, and SAE ported directional control valves
- Position Detection: Proximity switches (NPN/PNP inductive sensors) for end-position feedback
- Control Platforms: PLC/Industrial Controller motion logic, Festo CROS application software, and third-party pneumatic circuit design tools
- Air Preparation: Regulators, filters, and lubricators rated for ISO 8573-1 [7:4:4] service
- Interconnect: Metric M5, G1/8, and push-in pneumatic connectors per Festo standard tubing specifications
