Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30S 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 ACEJ12X35-30S
The ACEJ12X35-30S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. Its 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N push at 0.7 MPa, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -30 code gives a 30 mm adjustment window: an external stop screw trims the 35 mm stroke down on site to any length from 5 to 35 mm, so one cylinder can be dialled in for several fixture positions.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits slim clamping stations and compact slides. A hard-anodized aluminium body carries an S45C hard-chrome plated 6 mm rod, with a fixed TPU bumper at each end to soften end-of-stroke impact. Because the S code is ordered, the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted in the body slots. As a sizing guide, plan on roughly 34 N (about 3 kg of vertical lift) of real work at 0.5 MPa rather than the full 56.5 N rating.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30S |
|---|---|
| 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 ACEJ12X35-30S
| 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 ACEJ12X35-30S Is Used
Micro clamping of small parts
Holds light aluminium or plastic workpieces in electronics and watchmaking fixtures, with the stroke trimmed from 35 mm down to as little as 5 mm to match each jig.
Position-confirmed ejector
Pushes finished components off a small assembly nest; the fitted magnet plus a CMSE or DMSE switch confirms the part has been fully ejected at the trimmed stroke.
Lab and test-rig actuation
Cycles small gates, dosing heads and sample holders on automated test benches, running 30-500 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X35-30S the Right Cylinder?
At 56.5 N push at 0.5 MPa this bore 12 unit covers light-duty clamping and part-presenting. If your load needs more, step up to bore 16 (100.5 N push at 0.5 MPa) or bore 20 (157.1 N); if it needs less, no smaller bore exists in the range, so reduce pressure instead. The stop screw only shortens the extend stroke and acts as an end stop, not a mid-stroke lock: on air loss the piston still drifts, so add a separate holding valve for suspended loads. FA flange or LB foot mounts bolt to the ISO 21287 face, and the fitted -S magnet accepts CMSE / DMSE switches for end-position sensing.
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 ACEJ12X35-30S FAQ
The 12 mm bore gives 56.5 N push and 42.4 N pull at 0.5 MPa, and 79.2 N push and 59.4 N pull at 0.7 MPa, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The ordered stroke is 35 mm and the -30 stop screw trims the extend stroke anywhere within a 30 mm window, giving a usable range of 5-35 mm. Port size is M5x0.8 and the rod thread is female M3x0.5.
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. A fixed TPU bumper at each end absorbs end-of-stroke impact. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be clipped into the body slots to signal extend and retract positions.
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