Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 40mm 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
- Stroke40 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 ACEJ12X40-10S
A double acting compact actuator built to ISO 21287, the ACEJ12X40-10S pairs a 12 mm bore with a 40 mm stroke that an external stop screw trims on site by up to 10 mm, giving a usable extend range of 30-40 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. The hard-anodized aluminium body with an S45C hard-chrome rod saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures a full-length body cannot reach.
For sizing intuition, treat about 34 N (0.6 of the 56.5 N push) as the practical working force at 0.5 MPa, which corresponds to lifting roughly 2.9 kg vertically with a 2:1 margin. The -S code on this model means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the body slots. Fixed TPU bumpers absorb end-of-stroke energy at both ends, and the female M3x0.5 rod thread accepts standard knuckles.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 40 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 ACEJ12X40-10S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 ACEJ12X40-10S Is Used
Small-part ejection from plastic molds
The 56.5 N push at 0.5 MPa is enough to kick light molded caps off a stripper plate, and the 30-40 mm trim range lets the molder dial the eject position without changing the cylinder.
Presence checks on electronics assembly benches
With the -S magnet fitted, CMSE or DMSE switches confirm board seating in test jigs, while the short ISO 21287 body fits under low fixture covers.
Light hold-down on packaging counters
About 34 N of practical working force at 0.5 MPa holds pouches or cartons steady for taping, and the M5x0.8 port keeps tubing runs tidy on crowded machines.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10S the Right Cylinder?
At 56.5 N push (42.4 N pull) at 0.5 MPa, this 12 mm bore suits light clamping, sorting and eject tasks; step up to the 16 mm bore (100.5 N push) for roughly double the force, or drop to a smaller option only if the 6 mm rod and 11.5 kgf theoretical ceiling still cover the load. Remember the stop screw sets the extend position mechanically - it is not a mid-stroke lock, so the piston can drift if air is lost. FA flange or LB foot mounts bolt to the ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report end positions without extra tooling.
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 ACEJ12X40-10S FAQ
At 0.5 MPa it delivers 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. Operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, speed 30-500 mm/s, air filtered to 40 um, and -20 to +70 C temperature range.
The -10 code gives a 10 mm window: an external stop screw shortens the 40 mm extend stroke anywhere down to 30 mm, set on site with a wrench. The S in the model code means the optional -S magnet is fitted, so CMSE / DMSE reed or solid-state switches mount in the body slots. The fixed TPU bumpers at both ends only soften end-of-stroke impact; FA flange and LB foot mounts attach to the standard ISO 21287 face.
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