Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke20 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 ACEJ12X20-10
The ACEJ12X20-10 is a double acting ISO 21287 compact cylinder from AirTAC with an adjustable extend stroke. Its 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N push at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window, so an external stop screw trims the 20 mm extend stroke down to as little as 10 mm on site. Air filtered to 40 um, 0.15-1.0 MPa (22-145 psi) operating pressure, speed 30-500 mm/s.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so this 12 mm unit slots into slim fixtures where a full-length body will not fit. The hard-anodized aluminium body carries a hard-chrome plated S45C rod with a female M3x0.5 thread, and a fixed TPU bumper at each end absorbs end-of-stroke shock. As a rule of thumb, plan on roughly 34 N (about 3 kg lifted vertically with a 2:1 margin) of real work at 0.5 MPa rather than the full 56.5 N rating. Note that the magnet is not fitted on this code; order the -S variant if you need CMSE / DMSE switch sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 20 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 ACEJ12X20-10
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×20 | 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 ACEJ12X20-10 Is Used
Micro part clamping
Trim the extend stroke between 10 and 20 mm to lightly clamp small electronics or watch-movement parts in a slim test fixture, using about 34 N of usable force at 0.5 MPa.
Compact ejection in assembly stations
The short body, about 50% shorter in mounting length than an ISO 15552 profile cylinder, ejects tiny components from nests where a full-length body cannot reach.
Lab and optical positioning
The 10 mm adjustment window lets technicians dial in a repeatable 10-20 mm push for sample holders or optical shutters, with the M5x0.8 port keeping plumbing minimal.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10 the Right Cylinder?
At 56.5 N push at 0.5 MPa this 12 mm bore suits light clamping and part-present duty. If your load needs more, the 16 mm bore gives 100.5 N push at the same pressure; if less is enough, check whether a shorter trimmed stroke on the same 12 mm bore covers it. The stop screw is a mechanical end stop only - on air loss the piston still drifts, so do not rely on it to hold a load mid-stroke. Mounting: FA flange or LB foot plus I/Y rod knuckles bolt to the ISO 21287 face. This code has no magnet; specify -S to enable CMSE / DMSE switches.
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 ACEJ12X20-10 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa it pushes 79.2 N and pulls 59.4 N; theoretical maximum is 11.5 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke: the -10 stop screw trims the 20 mm stroke within a 10 mm window (usable range 10-20 mm). Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um. Port is M5x0.8 (PT), rod thread female M3x0.5, max standard stroke for this bore is 50 mm.
It is an ISO 21287 compact cylinder with a hard-anodized aluminium body, threaded aluminium covers, a hard-chrome plated S45C rod and a fixed TPU bumper at both ends that only decelerates at stroke ends - it never locks or holds a load. FA flange, LB foot and I/Y rod knuckles bolt to the standard ISO 21287 face. Switches: this code has no magnet, so no sensor can be read; order the optional -S magnet version to use CMSE or DMSE reed / solid-state switches.
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