Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20B
The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20B 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 ASE25X20B
This AirTAC ASE25X20B is a single acting push cylinder with spring return, meaning air extends the rod and a built-in spring retracts it. With a 25 mm bore, it delivers 210.1 N of push force at 0.5 MPa, already net of the return spring, so you can size it directly for your application.
Its ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, fitting tight spaces where a full-length unit won't. The hard-anodized aluminium body and S45C hard-chrome rod resist wear, while the fixed TPU bumper absorbs end-of-stroke impact. For a safe working load, plan for about 126 N (0.6 times the push force) at 0.5 MPa, or roughly 13 kg of vertical lift with a 2:1 margin.
Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20B Technical Specifications
| Model | Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20B |
|---|---|
| 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 ASE25X20B
| 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 ASE25X20B Is Used
Jig Clamping
Use the ASE25X20B to clamp small parts in a CNC fixture. Its 210.1 N push at 0.5 MPa holds components firmly, and the compact body fits under a workholding plate.
Label Applicator
In a packaging line, this cylinder extends to press labels onto boxes. The 20 mm stroke matches the label height, and the spring return resets quickly for the next cycle.
Guard Door Interlock
Mount the ASE25X20B on a machine guard to push a locking pin into place. Its short stroke and reliable spring return ensure the guard stays closed until air is applied.
Is the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20B the Right Cylinder?
For lighter duty, the ASE20X20 offers 127.4 N push at 0.5 MPa, while the ASE32X20 steps up to 352.5 N. This 25 mm bore suits mid-range clamping or pressing tasks where space is limited. Note that the spring returns the rod to its home position on air loss, so it won't hold a mid-stroke position. The male rod thread (B code) simplifies mounting, and the M5x0.8 port accepts standard fittings. This model has no magnet, so CMSE or DMSE sensors cannot be used unless you order the optional -S version.
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 ASE25X20B FAQ
The ASE25X20B delivers 210.1 N of push force 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, and proof pressure is 1.5 MPa (215 psi). Operating pressure range is 0.2-1.0 MPa (28-145 psi).
This model has no magnet, so it cannot work with CMSE or DMSE switches. To use sensors, order the ASE25X20S version with the optional -S magnet. The cylinder's ISO 21277 compact body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and the fixed TPU bumper absorbs end-of-stroke impact.
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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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