Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-20S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-20S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 30mm 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
- Stroke30 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 ACEJ12X30-20S
A double acting compact actuator built to ISO 21287, the ACEJ12X30-20S pairs a 12 mm bore with a 30 mm stroke and a 20 mm adjustment window: an external stop screw trims the extend stroke on site anywhere between 10 and 30 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N at 0.7 MPa, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The hard-anodized aluminium body and S45C hard-chrome plated rod keep wear low in high-cycle automation.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures and guarded cells. Because the -S magnet is fitted, CMSE or DMSE reed and solid-state switches can be clamped anywhere along the body slots for end-of-travel signals. In practice, plan on roughly 34 N of usable push at 0.5 MPa, which lifts about 2.9 kg vertically with a 2:1 margin. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, with a fixed TPU bumper at both ends.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-20S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-20S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 30 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 ACEJ12X30-20S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| -20 | 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 ACEJ12X30-20S Is Used
Micro part ejection
Ejects small stamped terminals or plastic caps from a nest; the 10-30 mm trimmed stroke clears shallow pockets without overtravel.
Presence check with signal
With the fitted magnet, a CMSE switch confirms the rod reached the trimmed stop on a PCB clamp or lid-verify station.
Lab dosing press
The gentle 56.5 N push at 0.5 MPa seats vials or pipette tips in analytical equipment without crushing them.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-20S the Right Cylinder?
For a 12 mm bore the choice sits between the ACEJ16 (100.5 N push at 0.5 MPa) when the load creeps above about 34 N, and dropping to a fixed-stroke ACE if no on-site trimming is needed. The stop screw is a mechanical end stop only: it shortens the extend stroke, it is not a mid-stroke lock, and the piston still drifts if air is lost. FA flange and LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report position out of the box.
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 ACEJ12X30-20S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa, 79.2 N push and 59.4 N pull; theoretical maximum 11.5 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window: a stop screw on the front cover shortens the 30 mm extend stroke down to 10 mm. It is a mechanical end stop, not a load-holding lock. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, port M5x0.8, female rod thread M3x0.5.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits tight jigs and guarded assemblies. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches mount directly in the body slots. A fixed TPU bumper at each end absorbs end-of-stroke energy, and FA flange or LB foot brackets bolt straight to the standard face.
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