Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10SB
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10SB is a genuine double acting, double rod, 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, double rod, adjustable stroke
- Rod threadM3×0.5
- CushionFixed TPU bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
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, double rod, 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 kgf |
ACEJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
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 (double rod, 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?
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
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.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-10SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.