Airtac ACE Compact Cylinder ACE25X20B
The AirTAC Airtac ACE Compact Cylinder ACE25X20B 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 ACE25X20B
This AirTAC ACE25X20B is a double acting compact cylinder built to ISO 21287, with a 25 mm bore and 20 mm stroke. It delivers a 245.4 N push force at 0.5 MPa, and its short body takes up about 50% less mounting length than an ISO 15552 profile cylinder, so it fits into tight machine frames and guarding where a full-length unit will not.
The hard-anodized aluminium body and S45C hard-chrome plated rod resist wear in continuous cycling. The male rod thread (B code) lets you bolt on a custom tooling plate directly. For a real-world load, plan for about 15 kg of safe vertical work at 0.5 MPa, since 0.6 times the 245.4 N rating is a practical working limit. This model has no magnet fitted, so it cannot accept CMSE or DMSE sensors unless you order the optional -S version.
Airtac ACE Compact Cylinder ACE25X20B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X20B |
|---|---|
| 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 ACE25X20B
| 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 ACE25X20B Is Used
Compact Jig Clamping
Use the ACE25X20B to clamp small parts in a CNC fixture. The 245.4 N push at 0.5 MPa holds a 2 kg workpiece firmly, while the short body fits under a low-profile guard.
Carton Tabbing
In a packaging line, this cylinder can push a 20 mm tab on a cardboard box. The 206.2 N pull retracts the tab quickly, and the fixed TPU bumper prevents end-of-stroke shock on fast cycles.
Valve Actuation
Mount the ACE25X20B to actuate a small pneumatic valve lever. The 20 mm stroke matches common valve travel, and the male rod thread connects directly to a clevis for a positive link.
Is the Airtac ACE Compact Cylinder ACE25X20B the Right Cylinder?
For a lighter duty, the ACE20X20 offers a 157.1 N push at 0.5 MPa, while stepping up to the ACE32X20 gives you 402.1 N push at the same pressure. The M5x0.8 port suits small-bore air prep, and the 20 mm stroke handles short indexing moves. Since this unit has no magnet, choose the ACE25X20BS if you need position sensing with CMSE or DMSE switches. The male rod thread simplifies mounting a gripper or a small pusher plate without a rod-end adapter.
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 ACE25X20B 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 rises to 343.6 N and pull to 288.6 N. The theoretical maximum force is 50.1 kgf at 1.0 MPa. These numbers assume clean, dry air filtered to 40 um.
It follows the ISO 21287 compact standard, so the body is about 50% shorter than an ISO 15552 profile cylinder of the same bore. This saves space in tight fixtures. The fixed TPU bumper at each end absorbs impact, and the optional -S magnet (not on this model) enables CMSE or DMSE sensors.
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