Airtac ACE Compact Cylinder ACE25X5B
The AirTAC Airtac ACE Compact Cylinder ACE25X5B is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 5mm 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
- Stroke5 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 ACE25X5B
This AirTAC ACE25X5B is a double acting compact cylinder built to ISO 21287, with a 25 mm bore and a 5 mm stroke. It delivers 245.4 N of push force at 0.5 MPa, and 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 unit will not. The male rod thread (B code) simplifies direct coupling to a load without needing a rod-end adapter.
The hard-anodized aluminium body and S45C hard-chrome plated rod resist wear in high-cycle automation. A fixed TPU bumper at both ends absorbs end-of-stroke energy, but it is not a lock or brake, so a load will drift if air pressure is lost. For a safe working load, plan on about 147 N (roughly 15 kg) of real work at 0.5 MPa, not the full 245.4 N rating, to keep a 2:1 safety margin.
Airtac ACE Compact Cylinder ACE25X5B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X5B |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 5 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 ACE25X5B
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×5 | 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 ACE25X5B Is Used
Precision Clamping Fixture
Use the ACE25X5B to clamp small parts in a CNC vise or a dedicated fixture. The 5 mm stroke is ideal for a quick clamp action, and the 245.4 N push at 0.5 MPa holds a workpiece firmly during a drilling or tapping operation.
Label Applicator Press
In a packaging line, this cylinder can press a label applicator against a moving carton. The short stroke and 206.2 N pull force at 0.5 MPa retract the applicator cleanly between cycles, and the compact body fits under a conveyor guard.
Indexing Stop Pin
Mount the ACE25X5B to raise a stop pin that locates a pallet on an assembly conveyor. The 5 mm stroke moves the pin in and out of a locating hole, and the fixed TPU bumper prevents shock to the pallet at the end of each stroke.
Is the Airtac ACE Compact Cylinder ACE25X5B the Right Cylinder?
When sizing this ACE25X5B, compare it with the ACE20X5B which pushes 157.1 N at 0.5 MPa for lighter duty, or step up to the ACE32X5B which pushes 402.1 N at 0.5 MPa if you need more force in the same compact footprint. The 5 mm stroke suits short indexing or clamping motions, but remember the cylinder does not hold position when the valve is centered, so add a pilot check valve or rod lock if the load must stay put. This model has no magnet, so CMSE or DMSE sensors cannot be mounted; order the -S code version if you need position sensing. Mounting options like FA/FB flanges, LB foot brackets, or CA/CB clevises bolt directly to the ISO 21287 face.
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 ACE25X5B 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 is 50.1 kgf at 1.0 MPa. These figures are based on the 25 mm bore and 10 mm rod, and the port is M5x0.8.
It is compact because the ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, making it ideal for tight spaces. This specific model has no magnet, so you cannot mount CMSE or DMSE sensors. To use sensors, you must order the -S code version, which includes the optional magnet.
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