Airtac ACE Compact Cylinder ACE25X55B
The AirTAC Airtac ACE Compact Cylinder ACE25X55B is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 55mm 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
- Stroke55 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 ACE25X55B
This AirTAC ACE25X55B is a double acting compact cylinder with a 25 mm bore and 55 mm stroke, delivering 245.4 N of push force at 0.5 MPa. Its hard-anodized aluminium body and S45C hard-chrome plated rod are built for repeated cycles in tight automation cells.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits inside guard doors and compact jigs. With a male rod thread (B code) and M5x0.8 port, it connects directly to standard fixtures. For a real workload, plan around 147 N (about 15 kg) at 0.5 MPa for a 2:1 safety margin, not the full rated force.
Airtac ACE Compact Cylinder ACE25X55B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X55B |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 55 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 ACE25X55B
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×55 | 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 ACE25X55B Is Used
Compact Jig Clamping
Use in a CNC fixture to clamp small aluminium parts with 245.4 N push force, fitting within a 50% shorter envelope than a profile cylinder.
Carton Tabbing
Drive a tab-folding mechanism on a packaging line at speeds up to 500 mm/s, with the M5x0.8 port simplifying air line routing.
Guard Door Stop
Mount on a machine guard to push a safety latch into place, relying on the fixed TPU bumper to absorb end-of-stroke impact.
Is the Airtac ACE Compact Cylinder ACE25X55B the Right Cylinder?
Choose this ACE25X55B when you need a 55 mm stroke in a space-constrained layout. For lighter duty, the ACE20X55 offers 157.1 N push at 0.5 MPa, while stepping up to the ACE32X55 gives 402.1 N push at the same pressure. This model has no magnet, so it cannot accept CMSE or DMSE sensors; order the -S version if you need position sensing.
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 ACE25X55B FAQ
At 0.5 MPa, push force is 245.4 N and 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).
No, this ACE25X55B does not include the optional -S magnet, so CMSE or DMSE switches cannot be mounted. If you need position sensing, order the ACE25X55SB version with the built-in magnet. The fixed TPU bumper only decelerates at stroke ends, it does not hold loads.
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Covers non-human-caused product damage.
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