Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B is a genuine double acting, adjustable stroke 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, adjustable stroke
- Rod threadM3×0.5
- CushionFixed TPU bumper (both ends)
About the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B
This double acting AirTAC ACEJ12X25-10B is an ISO 21287 compact cylinder with a 12 mm bore and a 25 mm stroke that can be trimmed on site: the external stop screw of the -10 code shortens the extend stroke by up to 10 mm, giving a usable range of 15-25 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N and 59.4 N at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The hard-anodized aluminium body with an S45C hard-chrome-plated 6 mm rod keeps the envelope tight.
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slips into slim fixtures, small gates and compact clamping stations. A fixed TPU bumper at each end absorbs end-of-stroke shock, and the male (B code) rod thread with a PT port suits direct tooling attachment. As a rule of thumb, plan for about 34 N (roughly 3.5 kgf) of real work at 0.5 MPa, which is about 2.9 kg of vertical lift with a 2:1 margin.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 25 mm |
| Acting type | Double acting, adjustable stroke |
| 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 ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -10 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| 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 ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B Is Used
Micro clamping of small parts
Holds light aluminium or plastic workpieces in a drill or assembly jig, where the 15-25 mm adjustable extend range matches varying part heights without re-gauging the fixture.
Slide push on a compact feeder
Advances a light parts slide on a small electronics assembly station; the 56.5 N push at 0.5 MPa is enough for low-friction trays, and the short body fits the tight rail pitch.
Ejector for test fixtures
Pushes finished PCBs or small housings off a test nest; with the -S magnet option, CMSE / DMSE switches confirm end positions inside the narrow body.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B the Right Cylinder?
At 56.5 N push at 0.5 MPa this 12 mm bore suits light clamping, small part ejection and sensor-actuated slides. Step down is not available in this series, so if the load exceeds about 34 N of working force, move to the 16 mm bore (100.5 N push at 0.5 MPa); if 56.5 N is far more than needed, check whether a smaller actuator type fits. The 25 mm stroke with a 10 mm window covers 15-25 mm of extend travel. The rod end is male thread (B code) and the port is M5x0.8. If position feedback is ever needed, order the -S variant so CMSE / DMSE switches can be fitted; this model has no magnet. Remember the stop screw sets the end of stroke only - it does not hold a load if air is lost.
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 ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa the figures are 79.2 N push and 59.4 N pull; the theoretical maximum is 11.5 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window: an external stop screw shortens the 25 mm extend stroke, so the usable range is 15-25 mm. It runs double acting on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C.
The ISO 21287 compact body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, a hard-chrome-plated 6 mm rod and fixed TPU bumpers at both ends. This model has no magnet; order the -S code to enable CMSE / DMSE switches. Mounting options include FA flange and LB foot, with I and Y rod knuckles; the rod end here is male thread and the port is M5x0.8 (PT).
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