Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S
The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S is a genuine single acting, push (spring return) ISO 21287 compact air cylinder with a Ø25mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. Its short compact envelope saves about 50% of the mounting length of an ISO 15552 profile cylinder.
- BoreØ25 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push (spring return)
- Rod threadM6×1.0
- CushionFixed TPU bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S
This AirTAC ASE25X20S is a single acting push cylinder with spring return, delivering 210.1 N of push force at 0.5 MPa and 308.3 N at 0.7 MPa, net of the return spring. Its compact ISO 21287 body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight machine guards and gantries where space is at a premium.
The hard-anodized aluminium body and S45C hard-chrome plated rod resist wear in repetitive cycles. The optional -S magnet is fitted on this model, enabling CMSE or DMSE reed and solid-state switches for position sensing. For a safe working load, plan for about 126 N of real work at 0.5 MPa, which translates to lifting roughly 13 kg vertically with a 2:1 safety margin.
Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S Technical Specifications
| Model | Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S |
|---|---|
| Series | ASE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Single acting, push (spring return) |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | Fixed TPU bumper (both ends) |
| Max standard stroke | Up to 25 mm |
Specifications follow the official AirTAC ACE-series (ISO 21287) datasheet. Body: hard-anodized aluminium alloy; piston rod: S45C carbon steel with hard-chrome plating. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G. A built-in magnet is OPTIONAL — add the -S code to fit CMSE / DMSE position sensors.
Theoretical Output Force (Ø25mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 210.1 N |
| 0.7 MPa | 308.3 N |
Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa. Single-acting strokes are short (Ø12 to 10 mm, Ø16-100 to 25 mm).
Model Code: Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S
| ASE | ISO 21287 compact cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| S | Optional built-in magnet for CMSE / DMSE sensors (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
ACE-family variants: ACE (double acting), ASE / ATE (single acting push / pull), ACED (double rod), ACEJ (adjustable stroke), TACE / TACED (non-rotating twin-guide yoke). Mounting accessories: FA / FB flange, LB foot, CA / CB clevis, CR, SDB pivot, FTC; plus I and Y knuckles. Thread PT (blank) / G.
Where the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S Is Used
Jig Clamping
Use the 210.1 N push at 0.5 MPa to clamp small parts in a CNC fixture, where the compact body fits under a workholding plate and the spring retracts the clamp when air is removed.
Label Applicator
Drive a label tamp head in a packaging line with a 20 mm stroke, pushing labels onto cartons at speeds up to 500 mm/s, while the spring returns the head between cycles.
Guard Interlock
Activate a safety interlock pin on a machine guard, using the spring return to retract the pin when the guard opens, ensuring the mechanism defaults to a safe position.
Is the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S the Right Cylinder?
When sizing, compare this 25 mm bore with the 20 mm bore (127.4 N at 0.5 MPa) for lighter loads, or step up to 32 mm (352.5 N at 0.5 MPa) for more force. This model has a 20 mm stroke, within the 25 mm maximum standard stroke for this bore, and the spring returns the rod to its retracted home position on air loss, so it does not hold a mid-stroke position. Choose FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, or FTC brackets to match your fixture, and order the -S magnet for sensor feedback.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short stroke fits the compact body
- ✓ Port/thread type (PT / G)
- ✓ Add -S if you need the magnet for sensors
- ✓ Rod type (female / male B) & mount (FA/LB/CA)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Compact body: keep the stroke short and avoid side load on the rod.
- check Do not dismantle the threaded front/back covers.
- check Single-acting: do not force the rod against the spring.
- check Installation by qualified personnel per AirTAC docs.
Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20S FAQ
At 0.5 MPa, the push force is 210.1 N, and at 0.7 MPa it is 308.3 N, both net of the return spring. The minimum working pressure is 0.2 MPa, and the proof pressure is 1.5 MPa (215 psi).
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits in tight spaces. The fixed TPU bumper absorbs end-of-stroke impacts, and the optional -S magnet allows CMSE or DMSE switches for position sensing.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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