Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 50mm 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
- Stroke50 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 ACEJ12X50-10
This double acting AirTAC ACEJ12X50-10 is an ISO 21287 compact cylinder with a 12 mm bore and a 50 mm stroke that an external stop screw trims by up to 10 mm, giving a usable extend range of 40-50 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 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures where a full-length body cannot.
In practice, plan on roughly 34 N of real work at 0.5 MPa (about 60% of the rated push), which is around 3.4 kg of horizontal load or a vertical lift of about 2.8 kg with a 2:1 margin. The hard-anodized aluminium body carries a hard-chromed S45C rod with an M3x0.5 female thread, and a fixed TPU bumper at each end absorbs end-of-stroke energy. Note that no magnet is fitted on this version; the optional -S code is what enables CMSE / DMSE switch sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 50 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 ACEJ12X50-10
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | 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 ACEJ12X50-10 Is Used
Small-part ejection in electronics fixtures
The 56.5 N push at 0.5 MPa is enough to eject finished PCB carriers or connector housings from a nest, and the 40-50 mm trimmed stroke keeps the ejector pin travel matched to the nest depth.
Presence checking on a compact test bench
With the optional -S magnet, CMSE or DMSE switches report end positions on a gauge station; the short body fits inside a bench-top guard where an ISO 15552 profile cylinder would overhang.
Light snap-fit pressing in assembly cells
About 34 N of usable force at 0.5 MPa presses snap-fit caps or labels onto small plastic parts, with the stop screw set so the ram bottoms out at exactly the right compression point.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10 the Right Cylinder?
At 56.5 N push and 42.4 N pull at 0.5 MPa, the 12 mm bore suits light clamping, ejection and part-present tasks; step up to the 20 mm bore (157.1 N push) if the load is heavier, or stay at 12 mm against the 16 mm bore (100.5 N) when space is tightest. The stop screw shortens the extend stroke only within the ordered 10 mm window and never lengthens it past 50 mm, and it is a mechanical end stop, not a mid-stroke lock, so the rod can drift if air is lost. FA flange and LB foot mountings bolt to the ISO 21287 face; order the -S code if CMSE / DMSE switches are needed later.
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 ACEJ12X50-10 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. The 12 mm bore has a 6 mm rod with an M3x0.5 female thread, an M5x0.8 port, and a 50 mm stroke adjustable down to 40 mm via the 10 mm stop-screw window. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, temperature -20 to +70 C, with a fixed TPU bumper at both ends.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA flange or LB foot plates bolt straight to its standard face. Position sensing is not included by default: the magnet is the optional -S code, so order ACEJ12X50-10S if you want CMSE or DMSE switches to work on the magnet slots.
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