Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20SB
The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20SB 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 ASE25X20SB
This AirTAC ASE25X20SB is a single acting push cylinder with spring return, so air extends the 10 mm rod and the spring retracts it. It delivers 210.1 N of push force at 0.5 MPa, net of the return spring, and needs a minimum of 0.2 MPa to overcome that spring.
The ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, which lets it fit into tight jigs and guards. With the optional -S magnet fitted, you can mount CMSE or DMSE reed or solid-state switches for position sensing. For a safe vertical lift, plan for about 12.8 kg at 0.5 MPa, using a 2:1 margin on the 210.1 N rating.
Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20SB Technical Specifications
| Model | Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20SB |
|---|---|
| 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 ASE25X20SB
| 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 ASE25X20SB Is Used
Fixture Clamping
Use this cylinder to clamp small parts in a CNC fixture, where the 20 mm stroke and 210.1 N force hold components securely during drilling or milling.
Label Applicator
In a packaging line, this compact unit can push a label applicator head forward to press labels onto boxes, with the spring retracting it quickly after each cycle.
Guard Door Latch
Mount this cylinder to release a safety guard door on a small machine. The 20 mm stroke is enough to disengage a latch, and the spring ensures the door stays locked when air is off.
Is the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X20SB the Right Cylinder?
For a lighter duty, the ASE20X25 offers 127.4 N at 0.5 MPa, while the ASE32X25 steps up to 352.5 N if you need more force. This 25 mm bore with a 20 mm stroke suits short-travel applications where space is tight. The male rod thread (B code) simplifies mounting to linkages, and the M5x0.8 port is standard for this bore. Remember, the spring returns the rod to its home position on air loss; it does not hold a mid-stroke load.
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 ASE25X20SB FAQ
At 0.5 MPa, the push force is 210.1 N, and at 0.7 MPa it is 308.3 N. These figures are net of the return spring, so they are the actual force available to move a load. The operating pressure range is 0.2-1.0 MPa (28-145 psi), with a proof pressure of 1.5 MPa (215 psi).
The ISO 21287 body is about 50% shorter than an ISO 15552 profile cylinder, saving mounting space in tight areas. It has a fixed TPU bumper at both ends to absorb impact, and the optional -S magnet allows CMSE or DMSE sensors to detect the rod position. The body is hard-anodized aluminium with a hard-chrome plated S45C steel rod for durability.
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1-Year Warranty
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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