Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-10B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-10B is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 45mm 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
- Stroke45 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 ACEJ12X45-10B
The ACEJ12X45-10B is a double acting ISO 21287 compact cylinder with a 12 mm bore and a 45 mm stroke that can be trimmed on site. An external stop screw shortens the extend stroke by up to 10 mm inside the ordered -10 window, giving a usable range of 35-45 mm without changing the cylinder. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N on the extend stroke at 0.7 MPa, with a theoretical maximum of 11.5 kgf at 1.0 MPa.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim pick-and-place heads and small fixtures. A practical sizing guide: plan for roughly 34 N (about 60% of the push rating) as real working force, which lifts about 2.9 kg vertically with a 2:1 margin. The male rod thread (B code) ends in an M3x0.5 stud for direct tooling attachment. Note that this unit has no magnet fitted - order the -S version if you need CMSE / DMSE switch position sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-10B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-10B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 45 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 ACEJ12X45-10B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×45 | 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 ACEJ12X45-10B Is Used
Micro part ejection
Ejects small plastic caps or connector housings off a mould or nest, where the 35-45 mm adjustable extend range lets the operator dial in exact part release depth.
Lab sample indexing
Pushes sample trays or vial racks one station at a time on compact benchtop analysers, using the 56.5 N push force at 0.5 MPa for light, repeatable motion.
Small clamp actuation
Clamps thin PCBs or brackets during soldering or screw-driving, with the male M3x0.5 rod thread bolting straight to a custom clamp finger.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-10B the Right Cylinder?
At this bore size the neighbours matter: the ACEJ12X45-10B gives 56.5 N push at 0.5 MPa, while a 16 mm bore reaches 100.5 N and a 20 mm bore 157.1 N at the same pressure - step up if your mechanism needs more than about 34 N of usable force. The 45 mm stroke sits inside the 50 mm maximum standard stroke for bore 12, so it is a catalogue item, not a made-to-order build. The stop screw only trims the extend stroke; it is a mechanical end stop, not a load lock, so the rod can drift if air pressure is lost. FA flange or LB foot mounts and the optional -S magnet for CMSE / DMSE switches can be added at ordering.
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 ACEJ12X45-10B FAQ
At 0.5 MPa the cylinder pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push force is 79.2 N; the theoretical maximum is 11.5 kgf at 1.0 MPa. The base stroke is 45 mm and the -10 stop screw trims the extend stroke anywhere in a 35-45 mm window. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, port M5x0.8, rod thread M3x0.5 male (B code).
The hard-anodized aluminium ISO 21287 body is about 50% shorter in mounting length than an ISO 15552 profile cylinder, so it fits tight machine frames. Turning the external stop screw in shortens the extend stroke by up to 10 mm; a fixed TPU bumper at each end absorbs end-of-stroke impact. Position sensing is only possible on the -S version, which carries the magnet for CMSE / DMSE switches - this model has no magnet.
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