Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20
The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20 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 ASE25X20
This AirTAC ASE25X20 is a single acting push cylinder with spring return, so air extends the rod and the return spring pulls it back, needing only one air line. At 0.5 MPa it delivers 210.1 N of push force, net of the spring, and at 0.7 MPa it reaches 308.3 N, making it a solid choice for light clamping or positioning tasks.
The ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight jigs and guards where a full-length unit will not. For a safe working load, plan for roughly 126 N of real work at 0.5 MPa, which lifts about 12.8 kg vertically with a 2:1 margin, helping you match a real part weight without over-specifying.
Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20 Technical Specifications
| Model | Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20 |
|---|---|
| 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 ASE25X20
| 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 ASE25X20 Is Used
Jig Clamping
Use the ASE25X20 to clamp small parts in a drilling jig, where the 210.1 N push at 0.5 MPa holds a bracket firmly and the spring retracts the pin for quick part changes.
Label Applicator
In a packaging line, this cylinder extends a label applicator pad to press labels onto boxes, with the spring return lifting the pad after each cycle at speeds up to 500 mm/s.
Guard Door Actuator
Mount the ASE25X20 on a machine guard door to push it open for access, then let the spring close it automatically, using the compact body to fit within the guard frame.
Is the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20 the Right Cylinder?
When sizing, compare the 25 mm bore's 210.1 N push at 0.5 MPa with the smaller 20 mm bore at 127.4 N or the larger 32 mm bore at 352.5 N, so you can pick the right force for your application. Since this is single acting, the spring retracts the rod on air loss and does not hold a mid-stroke position, so use it for simple extend-and-return tasks, not load holding. The M5x0.8 port suits small air lines, and the optional -S magnet is not fitted here, so order the -S code if you need CMSE or DMSE sensors.
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 ASE25X20 FAQ
The ASE25X20 delivers 210.1 N push at 0.5 MPa and 308.3 N at 0.7 MPa, both net of the return spring. Minimum working pressure is 0.2 MPa, with a proof pressure of 1.5 MPa (215 psi). The bore is 25 mm with a 20 mm stroke and an M5x0.8 port.
Sensors are only possible if you order the optional -S magnet, which is not included in this model. Without the -S code, there is no magnet, so CMSE or DMSE switches cannot be mounted. The fixed TPU bumper at both ends absorbs end-of-stroke impact, and the compact ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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