Airtac ACE Compact Cylinder ACE12X25B
The AirTAC Airtac ACE Compact Cylinder ACE12X25B is a genuine double acting ISO 21287 compact air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM3×0.5
- 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 ACE12X25B
This AirTAC ACE12X25B is a double acting compact cylinder that uses air to both extend and retract its 6 mm rod. With a 12 mm bore it delivers a 56.5 N push and a 42.4 N pull at 0.5 MPa, and at 0.7 MPa those figures rise to 79.2 N and 59.4 N. The short ISO 21287 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. A fixed TPU bumper at each end absorbs the impact at stroke limits, and the hard-anodized aluminium body with a hard-chrome plated S45C steel rod resists wear in daily cycling.
For real work at 0.5 MPa, plan for about 34 N of usable force rather than the full 56.5 N rating, which translates to lifting roughly 3.5 kg vertically with a 2:1 safety margin. This model has a male rod thread (the B code) and a PT port thread, and it uses an M5x0.8 port. The magnet is optional, so this unit without the -S code has no magnet and cannot accept CMSE or DMSE sensors. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), and the speed range is 30-500 mm/s.
Airtac ACE Compact Cylinder ACE12X25B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE12X25B |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 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 ACE12X25B
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 12 | 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 ACE12X25B Is Used
Light Clamping Jig
Use the ACE12X25B to clamp small plastic parts in a bench-top assembly fixture, where its 56.5 N push at 0.5 MPa is enough to hold a component steady for gluing or screw driving without damaging it.
Tight Guard Door
Fit this cylinder inside a machine guard panel to actuate a small safety door or cover. The compact ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slides into a shallow cavity.
Small Parts Ejector
Mount the ACE12X25B under a die or mold to push out a small ejected part. Its 42.4 N pull at 0.5 MPa retracts the rod reliably, and the fixed TPU bumper prevents shock at the end of each cycle.
Is the Airtac ACE Compact Cylinder ACE12X25B the Right Cylinder?
Choose this ACE12X25B when you need a compact, double acting cylinder with a 25 mm stroke in a very small envelope. Its 56.5 N push at 0.5 MPa suits light clamping or positioning tasks; if you need more force, step up to the ACE16X25 with its 100.5 N push, or drop to the ACE12X10 for a shorter stroke. The male rod thread simplifies mounting with a rod-end accessory, and the M5x0.8 port matches small-bore air lines. Since there is no magnet, this unit is best for applications that do not require position sensing; if you need sensors, order the ACE12X25S with the optional magnet instead. Remember that this cylinder does not hold its position when air is lost, so 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 ACE12X25B FAQ
At 0.5 MPa the push force is 56.5 N and the pull force is 42.4 N. At 0.7 MPa the push rises to 79.2 N and the pull to 59.4 N. The theoretical maximum force at 1.0 MPa is 11.5 kgf. These figures apply to this 12 mm bore, 25 mm stroke double acting cylinder.
The ACE12X25B follows ISO 21287, a compact standard that saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits into tight spaces. However, this model has no magnet, so you cannot mount CMSE or DMSE sensors on it. To use sensors, you must order the -S version (ACE12X25S) which includes the optional magnet.
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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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