Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ12X25-10B is a genuine double acting, double rod, 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, double rod, adjustable stroke
- 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 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.
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, double rod, 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 kgf |
ACEJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
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 (double rod, 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.
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?
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
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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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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