Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30S 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 ACEJ12X50-30S
The ACEJ12X50-30S is a double acting AirTAC compact cylinder built to ISO 21287, with a 12 mm bore and a 50 mm stroke that an external stop screw can trim anywhere in a 30 mm window, giving a usable extend range of 20-50 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N on the extend stroke at 0.7 MPa, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The hard-anodized aluminium body is about 50% shorter in mounting length than an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot reach.
Because roughly 60% of the push force is a realistic working figure, plan on about 34 N of actual work at 0.5 MPa, which corresponds to lifting about 3 kg vertically - and about 1.5 kg if you keep a 2:1 margin. This -S version carries the optional magnet, so CMSE or DMSE reed or solid-state switches can be clipped onto the body for end-of-stroke sensing. A fixed TPU bumper at each end absorbs stop energy, the S45C rod is hard-chrome plated with a female M3x0.5 thread, and the M5x0.8 ports take air filtered to 40 um at 0.15-1.0 MPa (22-145 psi).
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30S |
|---|---|
| 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 ACEJ12X50-30S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -30 | 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 ACEJ12X50-30S Is Used
Small-part ejection from plastic molds
The 56.5 N push at 0.5 MPa is enough to nudge finished caps or bushings off a mold nest, and the 20-50 mm adjustable range lets one cylinder handle several cavity depths without re-plumbing.
Presence checking on electronics assembly benches
With the -S magnet fitted, CMSE or DMSE switches confirm the 6 mm rod has reached the trimmed stop position, verifying a connector or PCB is seated before the next cycle.
Light hold-down of gaskets in packaging lines
About 34 N of usable force at 0.5 MPa holds thin gaskets or labels flat during a taping or heat-seal step, and the short ISO 21287 body fits under low machine guards.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30S the Right Cylinder?
At this bore size the 56.5 N push at 0.5 MPa suits light clamping, sorting and eject tasks; step down is not available in the ACEJ range, while the 16 mm bore (100.5 N push at 0.5 MPa) is the next size up if the load grows. The 30 mm adjustment window means one cylinder can serve several product lengths on the same station - set 20 mm for a short part, 50 mm for a long one. Remember the stop screw only shortens the extend stroke; it is a mechanical end stop, not a mid-stroke lock, so the rod will drift if air is lost. Order FA flange or LB foot mounts to match the ISO 21287 face, and specify the -S magnet (fitted here) whenever CMSE or DMSE switch feedback is needed.
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 ACEJ12X50-30S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those rise to 79.2 N and 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting with an extend stroke adjustable from 20 to 50 mm via the 30 mm stop-screw window, running at 30-500 mm/s on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, with M5x0.8 ports and a female M3x0.5 rod thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow jigs and guarded stations. This -S version carries the optional magnet, so CMSE or DMSE reed or solid-state switches mount directly in the body slots; FA flange and LB foot mounts bolt to the standard ISO 21287 face. A fixed TPU bumper at each end absorbs end-of-stroke energy but never locks or holds a load.
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