Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 45mm 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
- Stroke45 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 ACEJ12X45-30S
The ACEJ12X45-30S is a double acting AirTAC compact cylinder built to ISO 21287, with a 12 mm bore and a 45 mm stroke that an external stop screw can trim by up to 30 mm, giving a usable extend range of 15-45 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 maximum of 11.5 kgf at 1.0 MPa. Air is the only fluid, filtered to 40 um, at 0.15-1.0 MPa (22-145 psi).
Because the hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, this 12 mm unit slips into small fixtures, slide assemblies and guarding where a full-length body cannot. The -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped into the body slots for end-of-stroke signalling. A fixed TPU bumper at each end absorbs end-of-stroke impact, and the S45C hard-chrome-plated 6 mm rod runs in a grease-retaining two-way seal. As a rule of thumb, plan on roughly 34 N of real work at 0.5 MPa (about 60% of the push rating), which corresponds to lifting around 3 kg vertically with a 2:1 margin.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 45 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 ACEJ12X45-30S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×45 | 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 ACEJ12X45-30S Is Used
Signalled micro-part ejection
Ejects small electronic components from a nest with a trimmed 15-45 mm extend stroke, while the fitted -S magnet drives a CMSE switch to confirm each cycle.
Compact jig clamping
Clamps light PCB test fixtures inside tight guarding, where the short ISO 21287 body fits where an ISO 15552 profile cylinder would not.
Lab dosing slide
Drives a small dosing or sampling slide at 30-500 mm/s, with the stop screw set so the extend stroke matches the vial pitch exactly.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30S the Right Cylinder?
At 12 mm bore this is the smallest ACEJ size: if your load needs more than about 56 N at 0.5 MPa, step up to the 16 mm bore (100.5 N push) or the 20 mm bore (157.1 N push). For lighter pick-and-place work under 3 kg vertical, the 12 mm keeps air consumption low. The 45 mm stroke sits inside the 50 mm maximum standard stroke for this bore, so no made-to-order stroke is needed. The stop screw shortens the extend stroke only - it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. Choose FA flange or LB foot mounting, and note the magnet is already fitted on this -S version; the plain ACEJ12X45-30 without S has no magnet.
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 ACEJ12X45-30S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push is 79.2 N and pull 59.4 N; theoretical maximum is 11.5 kgf at 1.0 MPa. The -30 code is a 30 mm adjustment window: an external stop screw shortens the 45 mm extend stroke by up to 30 mm, so the usable range is 15-45 mm. It shortens the stroke only and acts as an end stop, not a load-holding brake. Speed range is 30-500 mm/s, pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), temperature -20 to +70 C.
The ISO 21287 short-body design saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome 6 mm rod, M3x0.5 female rod thread and M5x0.8 ports. Fixed TPU bumpers at both ends absorb end-of-stroke energy. Because this model carries the optional -S magnet, CMSE or DMSE reed and solid-state switches can be fitted in the body slots; FA flange and LB foot mountings bolt straight to the ISO 21287 face.
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