Festo ADN-25-50-A-PPS-A Compact Cylinder

ADN-25-50-A-PPS-A: 25 mm bore, 50 mm stroke double-acting compact cylinder

The Festo ADN-25-50-A-PPS-A (article 577188) is a double-acting compact cylinder with a 25 mm piston and 50 mm stroke, built to ISO 21287. Seven Star LLC supplies ADN-25-50-A-PPS-A in Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer. The paragraphs below explain the data on the manufacturer sheet, how to select the right size and what to send for a quotation.

Reading the part number against the datasheet:

• ADN is the series: the compact cylinder series.
• 25 in the code corresponds to the 25 mm piston diameter and 50 to the 50 mm stroke stated on the datasheet.
• Cushioning: Self-adjusting pneumatic end-position cushioning.
• Rod end: external thread, thread M8.
• Port size: M5.

ADN-25-50-A-PPS-A technical specifications

Values below are taken from the manufacturer data sheet for article 577188.

How the ADN-25-50-A-PPS-A works and what the force figures mean

Compressed air admitted behind the piston pushes the rod out; air admitted on the rod side pulls it back, which is what double-acting means. The advancing force of 295 N at 6 bar is the theoretical value (pressure times piston area). The retracting force is lower, 247 N, because the rod takes up part of the piston area on that side; the loss is about 16 percent.

Force scales with pressure. As a theoretical guide, the same cylinder gives about 197 N at 4 bar and about 393 N at 8 bar when advancing, before friction and load acceleration are deducted. Real systems deliver less, so size with margin.

End-position damping is by self-adjusting pneumatic end-position cushioning, which adapts to the load without manual setting. The datasheet states an impact energy of 0.3 J in the end positions, which is the energy the cushioning can handle; if moving mass times speed squared is above it, add external damping or reduce speed with flow control.

Where ADN-25-50-A-PPS-A fits: compatible and related parts

A cylinder of this type is normally part of a small chain: a directional valve, flow controls, fittings and tubing, and a position sensor on the barrel. The datasheet lists proximity switch sensing and mounting options (With through-hole, With internal thread, With accessories), so mounting kits such as foot, flange or clevis mounts are ordered separately as accessories. Fittings must match the M5 port.

Siblings in the same family that we handle include ADN-40-50-I-P-A, ADN-40-80-I-P-A, ADN-25-40-I-P-A, ADN-50-40-A-PPS-A, ADN-S-40-50-A-P. Each differs in bore, stroke or cushioning, so they are not interchangeable without checking force, travel and mounting.

Selection and ordering checklist for ADN-25-50-A-PPS-A

• Required force at the real working pressure, with margin; ADN-25-50-A-PPS-A gives 295 N advancing at 6 bar.
• Stroke: 50 mm is fixed by the part number, so confirm the full travel including any dead length.
• Cushioning type: self-adjusting pneumatic end-position cushioning, which adapts to the load without manual setting.
• Rod end: external thread with M8; confirm that attachments match.
• Operating pressure window 1.5 to 10 bar; check that the plant air stays inside it.
• Position sensing: Via proximity switch.
• The minimum operating pressure is 1.5 bar for this unit, higher than for the rubber-cushioned versions, so check the supply pressure at the point of use.

Installation, commissioning and maintenance of ADN-25-50-A-PPS-A

Mount the cylinder on a flat rigid surface and align the load with the rod axis so that no side force acts on the rod bearing. Use flow control valves to tune speed; the M5 port takes standard Festo-type or generic fittings of that thread. Mounting position is any.

For commissioning, supply clean dried air, start at low pressure, cycle the cylinder without load and then raise to working pressure. The self-adjusting cushioning needs no screws; check only that the stroke ends are reached smoothly. Check rod and wiper for wear and listen for air leaks at the end caps during routine rounds. Keep a spare seal kit or a replacement cylinder on the shelf for lines that cannot stop.

Typical applications of ADN-25-50-A-PPS-A in Oman and the GCC

Oman and the wider GCC put pneumatic equipment under demanding conditions: ambient heat in summer, fine desert dust, high humidity in coastal plants and compressed-air systems that are not always perfectly dried. A 25 mm bore with a 50 mm stroke and self-adjusting cushioning is a small cylinder that still brings pneumatic end-position damping, useful for light loads moved at higher speed.

Where air is dry and filtered, a cylinder such as the ADN-25-50-A-PPS-A typically runs for years between seal replacements. In dusty outdoor or semi-outdoor locations, a bellows or rod protection and a regular wipe of the rod extend life.

ADN-25-50-A-PPS-A and sibling variants compared

The table compares ADN-25-50-A-PPS-A with other cylinders of this family from the manufacturer data sheets.

Information to send with your ADN-25-50-A-PPS-A RFQ

• Full part number ADN-25-50-A-PPS-A and the quantity required.
• Working pressure, load mass and cycle time, so we can check force and cushioning.
• Mounting accessories needed: foot, flange, clevis, rod eye or sensors.
• Fitting thread and tube size on your side.
• Environment: ambient temperature, dust, washdown or outdoor exposure.
• Delivery location in Oman or the GCC and required lead time.

Documents and quotation

The manufacturer data sheet for ADN-25-50-A-PPS-A is attached on this page for download.

Send the part number ADN-25-50-A-PPS-A with quantity and delivery location and we will confirm availability and a quotation. Seven Star LLC is an independent supplier and is not affiliated with the manufacturer.