Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30B is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 35mm 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
- Stroke35 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 ACEJ12X35-30B
The ACEJ12X35-30B is a double acting AirTAC compact cylinder built to ISO 21287, with a 12 mm bore and a 35 mm stroke that an external stop screw trims anywhere in a 30 mm window, giving a usable extend range of 5-35 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N and 59.4 N at 0.7 MPa, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. Air supply is 0.15-1.0 MPa (22-145 psi) and rod speed runs 30-500 mm/s.
The short ISO 21287 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 will not fit. With 56.5 N of push, plan on roughly 34 N (about 3 kg) of real work at 0.5 MPa, which is around 1.7 kg of vertical lift with a 2:1 margin. The hard-anodized aluminium body carries a 6 mm S45C hard-chrome rod with a male thread (the B code), and fixed TPU bumpers absorb end-of-stroke shock at both ends. This unit has no magnet; order the optional -S code if you need CMSE / DMSE switch sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 35 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 ACEJ12X35-30B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×35 | 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 ACEJ12X35-30B Is Used
Micro part ejection
Trims its 5-35 mm extend range to eject small machined or moulded parts weighing up to about 3 kg from a nest, with the stop screw set per part family.
Compact test stations
The short body, roughly half the length of an ISO 15552 profile cylinder, fits inside bench-top leak or press-check rigs where space is minimal.
Adjustable indexing pins
Sets exact pin projection per product variant on small assembly pallets, re-trimmed on site within the 30 mm window without swapping cylinders.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30B the Right Cylinder?
At 12 mm bore this is the smallest ACEJ size: 56.5 N push at 0.5 MPa. Step up to bore 16 for 100.5 N or bore 20 for 157.1 N if the load grows. The -30 window means the 35 mm stroke can be shortened by up to 30 mm on site, so one cylinder covers several fixture positions. The stop screw is a mechanical end stop only, not a mid-stroke lock, so the rod still drifts if air is lost. Mounting: FA flange or LB foot brackets plus I/Y rod knuckles bolt to the ISO 21287 face. Port is M5x0.8 and the rod end is male thread (B code).
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 ACEJ12X35-30B FAQ
Push 56.5 N and pull 42.4 N at 0.5 MPa; push 79.2 N and pull 59.4 N at 0.7 MPa; theoretical maximum 11.5 kgf at 1.0 MPa. It is double acting with a 12 mm bore, 35 mm stroke adjustable down to 5 mm via the -30 stop screw, M5x08 ports (M5x0.8), a 6 mm male-thread rod, 0.15-1.0 MPa (22-145 psi) air, 30-500 mm/s speed and fixed TPU bumpers both ends.
An external stop screw shortens the extend stroke by up to 30 mm within the ordered window, so the rod stops anywhere from 5 mm to the full 35 mm; it is a mechanical end stop, not a mid-stroke lock or brake. This model has no magnet, so no switch can be read; order the optional -S magnet version to run CMSE or DMSE switches. Mounting is via FA flange, LB foot or FTC brackets on the ISO 21287 face.
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