Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10B 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 ACEJ12X50-10B
A double acting compact cylinder built to ISO 21287, the ACEJ12X50-10B pairs a 12 mm bore with a 50 mm stroke and a 10 mm adjustment window. An external stop screw trims the extend stroke on site anywhere between 40 and 50 mm, so one cylinder can be tuned to several fixture positions without reordering. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N on the extend side at 0.7 MPa.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters inside small pick-and-place heads and slide clamps. In practice, plan on roughly 34 N of usable push at 0.5 MPa (about 0.6 of the rating), which lifts about 2.9 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome plated 6 mm rod, and the male rod thread (B code) bolts straight to standard tooling. Note: this unit has no magnet, so no CMSE or DMSE switch can be fitted; order the -S code if sensing is needed.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10B |
|---|---|
| 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 ACEJ12X50-10B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -10 | 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 ACEJ12X50-10B Is Used
Micro part ejection from molds
The 56.5 N push at 0.5 MPa is enough to strip tiny plastic or metal parts off small mold cores, and the 40-50 mm trimmed stroke keeps the ejector footprint inside a compact tool base.
Light-duty fixture clamping
Clamps thin sheet-metal brackets or PCB test fixtures in electronics assembly, where about 34 N of working force at 0.5 MPa holds the part without deforming it.
Small vertical lift in a pick head
Lifts about 2.9 kg vertically with a 2:1 margin, ideal for raising sensors, nozzles or small grippers on a compact gantry where headroom is tight.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-10B the Right Cylinder?
At the bottom of the ACEJ range, the 12 mm bore suits light clamping and small part transfer. Step up to the 16 mm bore (100.5 N push at 0.5 MPa) for roughly double the force, or drop to a fixed-stroke ACE if no on-site trimming is needed. The stop screw only shortens the extend stroke and is not a mid-stroke lock: on air loss the piston still drifts, so use a valve with a holding position if the load must stay put. Mounting via FA flange or LB foot, with I and Y rod knuckles available; PT ports as standard, G on request.
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 ACEJ12X50-10B FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa the figures are 79.2 N push and 59.4 N pull, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window: an external stop screw shortens the 50 mm extend stroke to any value between 40 and 50 mm. It is a mechanical end stop only, 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, so it fits shallow jigs and tight gantries. A fixed TPU bumper at each end absorbs end-of-stroke shock. This model has no magnet fitted, so no switch can be mounted; order the -S version to enable CMSE or DMSE reed or solid-state switches. Mounting options include FA flange and LB foot, and the male rod thread (B code) attaches directly to standard tooling.
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