Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50 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 ACEJ12X50-50
A double acting ISO 21287 compact cylinder, the ACEJ12X50-50 pairs a 12 mm bore with a 50 mm stroke that an external stop screw can trim anywhere from 0 to 50 mm on site. 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 ceiling of 11.5 kgf at 1.0 MPa. The hard-anodized aluminium body with an S45C hard-chrome plated rod runs at 0.15-1.0 MPa (22-145 psi) and 30-500 mm/s.
The short 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 cannot. As a rule of thumb, plan on roughly 34 N (about 3 kg of vertical lift with a 2:1 margin) of real work at 0.5 MPa rather than the full rating. No magnet is fitted on this version; order the -S code if you want CMSE / DMSE switch sensing. FA flange, LB foot and I/Y rod knuckles bolt straight to the ISO 21287 face.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50 |
|---|---|
| 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 ACEJ12X50-50
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -50 | 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 ACEJ12X50-50 Is Used
Micro part clamping
Holds small electronics or watch components against a fixture, with the stop screw trimmed so the 50 mm travel ends exactly at the part face.
Lab sample ejection
Pushes vials or test coupons off a shuttle in compact benchtop automation where a 56.5 N push at 0.5 MPa is ample.
Multi-depth pin press
One cylinder set to different trimmed strokes serves several shallow insert or marking depths on a small rotary dial table.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50 the Right Cylinder?
At 56.5 N push and 42.4 N pull at 0.5 MPa, this 12 mm bore suits light clamping, ejecting and positioning of small parts. Step down is not possible below this bore, so if even 56.5 N is marginal, look at a lever or a second cylinder in parallel. Step up to the 16 mm bore (100.5 N push at 0.5 MPa) when loads grow. The -50 window lets one cylinder serve several station depths, but remember the stop screw is an end stop only: on air loss the piston still drifts, so do not rely on it to hold a load. Female M3x0.5 rod thread and PT ports; add the optional -S magnet if position sensing is planned.
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 ACEJ12X50-50 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa, 79.2 N push and 59.4 N pull; theoretical maximum is 11.5 kgf at 1.0 MPa. The -50 code is a 50 mm adjustment window: an external stop screw shortens the 50 mm extend stroke by up to 50 mm, giving a usable range of 0-50 mm. It shortens the stroke only and acts as a mechanical end stop, not a load-holding brake. Speed range is 30-500 mm/s and operating pressure is 0.15-1.0 MPa (22-145 psi).
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at both ends to absorb end-of-stroke energy. This version has no magnet, so no CMSE / DMSE switch can be read; order the -S variant for that. FA flange, LB foot, FTC brackets and I/Y rod knuckles mount directly on the ISO 21287 face, and the rod end is female M3x0.5 with PT ports.
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