Airtac ACE Compact Cylinder ACE25X25S
The AirTAC Airtac ACE Compact Cylinder ACE25X25S is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 25mm 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
- Stroke25 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 ACE25X25S
This AirTAC ACE25X25S is a double acting ISO 21287 compact cylinder with a 25 mm bore and 25 mm stroke. Its hard-anodized aluminium body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight automation frames where a full-length unit will not. The rod is 10 mm S45C steel with hard-chrome plating, and the port is M5x0.8.
At 0.5 MPa this model pushes with 245.4 N and pulls with 206.2 N, so it handles light clamping and indexing jobs with ease. Because the -S magnet is fitted, you can mount CMSE or DMSE reed or solid-state switches for position sensing. For a real part, plan on lifting about 15 kg vertically with a 2:1 safety margin, or about 25 kg if you use the full theoretical force at 1.0 MPa.
Airtac ACE Compact Cylinder ACE25X25S Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X25S |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 25 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 ACE25X25S
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×25 | 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 ACE25X25S Is Used
Fixture Clamping
Use the 245 N push force to clamp small parts in a CNC vise or fixture, with the short body fitting under a machine guard where a longer cylinder would not fit.
Stop Gate
Mount this cylinder on a packaging conveyor to raise a stop gate for diverting boxes. The 25 mm stroke is enough to block or release items, and the optional magnet lets you confirm the gate position.
Light Press
In a small bench press for inserting bushings or pins, the 245.4 N push at 0.5 MPa provides controlled force. The compact body saves space on a crowded workbench, and the fixed bumper reduces end-of-stroke noise.
Is the Airtac ACE Compact Cylinder ACE25X25S the Right Cylinder?
Choose this 25 mm bore when you need around 245 N of push force at 0.5 MPa. If your application needs less, the 20 mm bore delivers 157.1 N push; if you need more headroom, step up to the 32 mm bore which provides 402.1 N push at the same pressure. The 25 mm stroke suits short transfer or pressing moves, and the fixed TPU bumper at both ends handles speeds from 30 to 500 mm/s.
Since the magnet is already fitted, you can add CMSE or DMSE sensors without any cylinder modification. Mounting options include FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, and FTC brackets, all matching the ISO 21287 face. Remember that this cylinder is double acting, so it will not hold its position if air pressure is lost; use a rod lock or pilot check valve for load holding.
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 ACE25X25S 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. These figures assume clean, dry air at the specified pressure.
The -S code means the magnet is fitted on this specific model, so you can mount CMSE or DMSE reed or solid-state switches for position sensing. On ACE cylinders without the -S code, the magnet is not included and sensors cannot be used. The body is ISO 21287 compact, about 50% shorter than an ISO 15552 profile cylinder, and uses a fixed TPU bumper at both ends.
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