Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30 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 ACEJ12X50-30
The ACEJ12X50-30 is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. A stop screw on the outside trims the 50 mm stroke down by up to 30 mm, giving a usable range of 20-50 mm without changing the cylinder. At 0.5 MPa the 12 mm bore delivers 56.5 N push and 42.4 N pull, rising to 79.2 N push at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures, small gates and compact pick stations. A practical sizing rule: plan for roughly 34 N of real work at 0.5 MPa, which is about 2 kg of vertical lift with a 2:1 margin. The hard-anodized aluminium body carries a 6 mm S45C hard-chrome rod with a female M3x0.5 thread, and a fixed TPU bumper at each end absorbs end-of-stroke shock. Speed range is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30 |
|---|---|
| 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 ACEJ12X50-30
| 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 ACEJ12X50-30 Is Used
Micro part clamping
Holds small electronics or watch-movement parts in a test nest; the 20-50 mm adjustable stroke lets one cylinder serve several fixture depths, with about 34 N usable clamp force at 0.5 MPa.
Small part ejection
Pushes finished 2-3 g components off a conveyor or out of a machining nest; 56.5 N push at 0.5 MPa clears sticky parts, and the short body fits under low machine guards.
Compact pick-and-present
Presents a connector or vial to a vision camera inside a tight gantry; the 50% shorter ISO 21287 body saves envelope, and the -S magnet option enables CMSE/DMSE end-position sensing.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30 the Right Cylinder?
At 56.5 N push at 0.5 MPa this 12 mm bore suits light clamping and part-presenting tasks; step down is not available in this series, while the 16 mm bore gives 100.5 N push at the same pressure if your load grows. The -30 window means the extend stroke can sit anywhere from 20 to 50 mm, set by the external stop screw - remember it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. Mounting: FA flange or LB foot brackets bolt to the ISO 21287 face, with I/Y rod knuckles available. This unit has no magnet; if you need CMSE or DMSE switch position feedback, order the -S code instead.
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 ACEJ12X50-30 FAQ
At 0.5 MPa: 56.5 N push and 42.4 N pull. At 0.7 MPa: 79.2 N push and 59.4 N pull. Theoretical maximum is 11.5 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke: the -30 stop screw trims the 50 mm stroke down to as little as 20 mm. Operating pressure 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 and the 6 mm rod ends in a female M3x0.5 thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits where a full-length cylinder will not. Fixed TPU bumpers at both ends absorb end-of-stroke impact. FA flange and LB foot mountings plus I/Y knuckles bolt to the standard face. Position sensing requires the optional -S magnet code - this unit has no magnet fitted, so no CMSE or DMSE switch can be read on it.
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