532317

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Festo part **532317** is a **DFM-25- -B guided pneumatic cylinder** designed to deliver stable, precise linear motion where side loads and high repeatability matter. With a **25 mm piston diameter** and **stroke options from 20 mm to 400 mm**, this **double-acting** actuator combines a compact body with an integrated guidance system to help minimise play and resist twisting during operation. It features **adjustable pneumatic cushioning at both ends**, alongside elastic end stops/plates and a smooth characteristic shock profile to reduce impact energy at end positions.

This unit supports **proximity sensor position detection**, offers **flexible mounting in any orientation**, and uses **G1/8 pneumatic ports**. It is specified for **1.5 to 10 bar** operating pressure using compressed air to **ISO 8573-1:2010 [7:4:4]**, and operates from **-20 °C to +120 °C** (Ex ambient **-20 °C to +70 °C**). The construction includes a forged aluminium body and cover, **NBR seals**, and a high-alloy stainless-steel piston rod, with **RoHS compliance**. The DFM-25- -B variant is also rated for **ATEX Zone 1 and Zone 2** gas environments (Category **II 2G**, protection type **Ex h IIC T4 Gb**).
Specification Description
Manufacturer Festo
Manufacturer Part Number 532317
Product Type Guided cylinder (guided drive)
Series / Type DFM-25- -B
Part Description Festo DFM-25- -B guided cylinder (part number 532317) designed for accurate, stable linear motion with integrated guidance, suitable for compact handling and positioning tasks where resistance to side loads and precise travel are required.
Piston Diameter 25 mm
Stroke Range 20 mm to 400 mm
Acting Type Double-acting
Operating Pressure Range 0.15 MPa to 1 MPa (1.5 bar to 10 bar)
Theoretical Force at 6 bar (Advance) 295 N
Theoretical Force at 6 bar (Retract) 247 N
End-Position Impact Energy 0.15 J to 0.3 J
Cushioning Elastic cushioning rings/plates at both ends; adjustable pneumatic cushioning at both ends; shock absorber with flat characteristic curve
Mounting Position Any
Guide Type Plain-bearing guidance; ball-bearing recirculating guidance
Position Sensing Provision for proximity sensor
Pneumatic Connection G1/8
Operating Medium Compressed air to ISO 8573-1:2010 [7:4:4]
Lubrication Lubricated operation possible (if used, continued lubricated operation is required)
Ambient Temperature Range -20 °C to +120 °C
Explosion Protection Marking (Gas) Ex h IIC T4 Gb
ATEX Gas Category II 2G
ATEX Zones (Gas) Zone 1 and Zone 2
Ex Ambient Temperature -20 °C to +70 °C
Materials (Body) Forged aluminium alloy
Materials (Cover) Forged aluminium alloy
Materials (Piston Rod) High-alloy stainless steel
Seal Material NBR
RoHS Compliant
Corrosion Resistance Class (CRC) 0 (no corrosion stress) to 2 (moderate corrosion stress)
PWIS Conformity VDMA24364-B1/B2-L

What does this guided cylinder do in a pneumatic system?

It provides a linear pneumatic stroke while maintaining precise, anti-rotation guidance for the moving carriage. This makes it suitable where side loads or torque could cause a standard cylinder rod to bind or twist.

What stroke lengths are available for this guided cylinder series?

The stroke range for this guided cylinder family is 20 mm to 400 mm, depending on the specific variant selected.

What is the piston diameter and what does it affect?

The piston diameter is 25 mm. Bore size influences achievable force at a given pressure, air consumption, and overall actuator sizing.

Is it single-acting or double-acting?

It is a double-acting pneumatic actuator, meaning air pressure is used for both extending and retracting motion.

What operating pressure range can it run at?

The operating pressure range is 0.15 MPa to 1 MPa (1.5 bar to 10 bar).

What pneumatic port thread does it use?

The pneumatic connection is G1/8. This helps when selecting fittings, tubing, and valve manifolds.

What guidance options are available in this product family?

The guided cylinder family includes versions with plain (sliding) guidance and versions with ball bearing recirculation guidance. The choice typically depends on load, smoothness requirements, and expected duty.

What cushioning options are available?

The family supports elastic end stops/plates on both sides, adjustable pneumatic cushioning on both sides, and a shock absorber option with a soft characteristic curve, depending on configuration.

Can it be mounted in any orientation?

Yes. The mounting position is specified as indifferent, so it can be installed in any orientation as required by the machine design.

Can position sensing be added?

Yes. It is designed for position detection using proximity sensors (for end position or intermediate detection, depending on the sensor arrangement and stroke).

What compressed air quality is recommended?

The specified working medium is compressed air to ISO 8573-1:2010 class [7:4:4]. Matching air quality helps maintain consistent performance and service life.

Can it be used with lubricated air?

Yes, lubricated operation is permitted. If lubricated air is used, it should be continued consistently thereafter to avoid changes in sealing conditions.

What ambient temperature range is permitted?

The ambient temperature range is -20 °C to +120 °C. For Ex-marked use, the specified ambient range is -20 °C to +70 °C.

Is this actuator suitable for potentially explosive atmospheres?

The series includes Ex-marking information: ATEX gas category II 2G with protection type Ex h IIC T4 Gb, suitable for Zone 1 and Zone 2 applications when installed and used according to the relevant requirements.

What are the theoretical forces at 6 bar?

At 6 bar, the theoretical force is 295 N on advance and 247 N on return (values stated for this 25 mm bore guided cylinder family).

What materials are used for the main components?

Key materials include a wrought aluminium alloy housing and cover, NBR seals, and a high-alloy stainless steel piston rod.

Is the product RoHS compliant and suitable for PWIS-sensitive environments?

Yes. The material note states RoHS conformity, and PWIS conformity is listed as VDMA24364-B1/B2-L.

What end-position impact energy should be considered when sizing deceleration?

The specified impact energy at end positions is 0.15 J to 0.3 J, which can help guide selection of cushioning and any external deceleration measures.

How can I reference this exact item when placing an enquiry?

You can reference article number 532317 in your message to ensure the correct guided cylinder configuration is identified.

  • Precision guiding of pneumatic linear movement where side loads and torsional forces must be controlled
  • Compact pick-and-place axes for short-to-medium strokes in automated assembly cells
  • Workpiece positioning and locating for repeatable infeed/outfeed transfer stations
  • Actuation of grippers, stops, diverters and gates with improved anti-rotation stability
  • Jigs and fixtures requiring guided pressing, clamping, lifting or indexing actions
  • Packaging machinery motions such as pusher plates, cartoners and tray handling mechanisms
  • Labelling and printing stations where accurate, guided extension and retraction is required
  • Small-part handling in electronics and light manufacturing, supporting consistent alignment
  • Integration into modular pneumatic systems where proximity sensing for end-position detection is needed
  • Use in applications demanding flexible mounting orientation without compromising guided travel

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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