Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30SB 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 ACEJ12X45-30SB
A double acting compact cylinder built to ISO 21287, the ACEJ12X45-30SB pairs a 12 mm bore with a 45 mm stroke that the -30 stop screw trims anywhere down to 15 mm on site. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N at 0.7 MPa, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot reach.
The hard-anodized aluminium body carries a hard-chromed S45C rod with a male thread (B code), and this unit ships with the optional -S magnet already fitted, so CMSE or DMSE reed and solid-state switches can be clipped straight onto the body. A fixed TPU bumper at each end softens end-of-stroke contact, and the stop screw is purely a mechanical end stop - on air loss the piston drifts, so it never holds a load. Plan on roughly 34 N of real work at 0.5 MPa (about 60% of the push rating), which corresponds to lifting around 3 kg vertically with a 2:1 margin.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30SB |
|---|---|
| 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 ACEJ12X45-30SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×45 | Stroke length in mm. |
| -30 | 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 ACEJ12X45-30SB Is Used
Micro part ejection
Ejects small stamped or moulded parts from a die or nest, with the 15-45 mm adjustable window letting you set the exact push-off travel per part.
Presence check with signalling
The fitted -S magnet drives CMSE / DMSE switches, so a jig can confirm the rod reached its trimmed stop before the next cycle starts.
Light clamp on a compact fixture
About 34 N of usable clamping force at 0.5 MPa holds small brackets or PCBs in a machining or assembly fixture where mounting space is scarce.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30SB the Right Cylinder?
At 56.5 N push (0.5 MPa) this 12 mm bore suits light clamping and small-part positioning. If your load needs more muscle, the 16 mm bore delivers 100.5 N push at the same pressure; for lighter duty the range starts smaller still. The 45 mm stroke sits inside the 50 mm maximum standard stroke for this bore, so no made-to-order stroke is needed. The male rod thread (B) suits knuckle or external tooling, FA flange or LB foot mountings bolt to the ISO 21287 face, and because the -S magnet is fitted, CMSE / DMSE switches give end-of-stroke signalling out of the box.
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 ACEJ12X45-30SB FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push is 79.2 N and pull 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -30 code is a 30 mm adjustment window: an external stop screw shortens the 45 mm extend stroke by up to 30 mm, giving a usable range of 15-45 mm. It is a mechanical end stop only - it never locks or brakes the load, and the piston drifts if air is lost.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at both ends and a hard-anodized aluminium body. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount in the body slots. FA flange and LB foot mountings bolt to the standard face, the rod end is male threaded, and the air port is M5x0.8. Operating range is 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s.
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