Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10SB 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 ACEJ12X40-10SB
A double acting ISO 21287 compact cylinder, the ACEJ12X40-10SB pairs a 12 mm bore with a 40 mm stroke and a 10 mm adjustment window: an external stop screw trims the extend stroke on site anywhere between 30 and 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, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The hard-anodized aluminium body and S45C hard-chrome plated 6 mm rod keep wear low in continuous duty.
Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into slim pick-and-place heads and test fixtures a full-length cylinder cannot enter. Plan on roughly 34 N (about 3 kg of vertical lift) for real work at 0.5 MPa, leaving margin for friction and part weight. The -S code on this model means the magnet is fitted, so CMSE / DMSE reed or solid-state switches read end positions directly, and a fixed TPU bumper at each end absorbs end-of-stroke shock.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10SB |
|---|---|
| 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 ACEJ12X40-10SB
| 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 ACEJ12X40-10SB Is Used
Micro part ejection
Ejects small machined pins or molded caps from a fixture; the 30-40 mm trimmed stroke clears shallow pockets without overtravel.
Presence check slide
Pushes a component into a gauge nest on an electronics line; the fitted magnet drives CMSE / DMSE switches for extend and retract confirmation.
Light gate actuation
Swings or trips a small gate or diverter on a packaging conveyor, where the compact body fits inside the guard frame.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10SB the Right Cylinder?
At 56.5 N push, this bore suits light clamping, sorting and small-part transfer. If your load needs more, step up to bore 16 (100.5 N push at 0.5 MPa) or bore 20 (157.1 N); for lighter duty, no smaller ACEJ bore exists. Remember the stop screw is a mechanical end stop only - on air loss the piston drifts, so it never holds a load mid-stroke. Mounting: FA flange or LB foot bolt to the ISO 21287 face, and I or Y rod knuckles suit the male (B) rod thread. Speed range is 30-500 mm/s over 0.15-1.0 MPa (22-145 psi).
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 ACEJ12X40-10SB 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 11.5 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke: the -10 stop screw trims the 40 mm stroke by up to 10 mm (usable 30-40 mm). Port is M5x0.8, rod thread is male (B code), speed 30-500 mm/s, pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), temperature -20 to +70 C, air filtered to 40 um.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits tight jigs and guards. A fixed TPU bumper at each end absorbs end-of-stroke energy. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be mounted in the body slots; without -S there is no magnet. FA flange, LB foot, FTC brackets and I/Y rod knuckles bolt straight to the ISO 21287 face.
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