Airtac ACE Compact Cylinder ACE25X20S
The AirTAC Airtac ACE Compact Cylinder ACE25X20S is a genuine double acting 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 typeDouble acting
- 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 ACE Compact Cylinder ACE25X20S
This AirTAC ACE25X20S is a double acting ISO 21287 compact cylinder that uses air to both extend and retract its 10 mm rod. The 25 mm bore delivers 245.4 N of push force at 0.5 MPa, with a pull force of 206.2 N, making it a solid choice for light assembly tasks. Its short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits into tight jigs and guards where a full-length cylinder will not.
Because this model carries the optional -S magnet, you can mount CMSE or DMSE reed or solid-state switches directly on the body for reliable position sensing. The hard-anodized aluminium body and S45C hard-chrome plated rod resist wear in continuous cycling. As a practical rule, plan for about 148 N of real work at 0.5 MPa, which translates to lifting roughly 15 kg vertically with a 2:1 safety margin.
Airtac ACE Compact Cylinder ACE25X20S Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X20S |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed TPU bumper (both ends) |
| Max standard stroke | Up to 150 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 | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACE Compact Cylinder ACE25X20S
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 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 ACE Compact Cylinder ACE25X20S Is Used
Jig Clamping
Use in a pneumatic jig to clamp small plastic housings during drilling or gluing; the 20 mm stroke and 245.4 N push hold parts firmly without taking up much space in the fixture.
Light Sorting Stop
Mount on a conveyor line to divert lightweight packages or components; the short stroke and fast 30-500 mm/s speed allow quick indexing, while the magnet feeds position signals to a PLC.
Guard Door Interlock
Actuate a small safety guard or access door on a packaging machine; the compact body fits within the machine frame, and the 206.2 N pull retracts the latch reliably.
Is the Airtac ACE Compact Cylinder ACE25X20S the Right Cylinder?
When sizing, compare this 25 mm bore with the smaller 20 mm bore that pushes 157.1 N at 0.5 MPa, or step up to the 32 mm bore that pushes 402.1 N at the same pressure. For a 20 mm stroke, this cylinder suits short, precise movements in compact fixtures. The fixed TPU bumper at both ends absorbs end-of-stroke energy, but it does not hold a load if air pressure is lost; use a rod lock or pilot check valve for position holding. The M5x0.8 port and female M6x1.0 rod thread match standard fittings, and the optional -S magnet enables sensor feedback for automation control.
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 0.15 – 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 Keep speed within the rated range; the TPU bumper absorbs stroke-end energy.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACE Compact Cylinder ACE25X20S FAQ
At 0.5 MPa, the push force is 245.4 N and the pull force is 206.2 N. At 0.7 MPa, push is 343.6 N and pull is 288.6 N. The theoretical maximum force at 1.0 MPa is 50.1 kgf. Operating pressure range is 0.15-1.0 MPa (22-145 psi), with a speed range of 30-500 mm/s.
The ACE25X20S has a short body that is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight spaces like machine guards or small jigs. It features a fixed TPU bumper at both ends to absorb impact, and the optional -S magnet allows you to add CMSE or DMSE switches for position sensing. The body is hard-anodized aluminium, and the rod is S45C steel with hard-chrome plating 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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