Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30SB is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 50mm 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
- Stroke50 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 ACEJ12X50-30SB
The ACEJ12X50-30SB is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. An external stop screw trims the 50 mm stroke by up to 30 mm, giving a usable range of 20-50 mm without changing the cylinder. At 0.5 MPa the 12 mm bore delivers 56.5 N push and 42.4 N pull, rising to 79.2 N push at 0.7 MPa. In practice, plan on roughly 34 N of real work at 0.5 MPa, which is about 3 kg of vertical lifting with a sensible margin.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures and guarded cells. The hard-anodized aluminium body carries a hard-chrome plated S45C rod, a male rod thread (B code) and a fixed TPU bumper at each end. This model carries the optional -S magnet, so CMSE or DMSE switches can be clamped into the body slots for end-of-stroke sensing. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, port M5x0.8.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 50 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 ACEJ12X50-30SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | 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 ACEJ12X50-30SB Is Used
Small-part ejection in plastic molding
Trims the eject stroke between 20 and 50 mm to clear shallow cavities on injection molds, with 56.5 N push at 0.5 MPa enough for light sprue and part knock-off.
Presence checking on electronics assembly lines
The fitted -S magnet drives CMSE or DMSE switches to confirm board or connector seating, while the 12 mm bore gives gentle, repeatable 34 N-class pressing.
Sample handling in lab automation
The short ISO 21287 body fits tight instrument enclosures, lifting sample vials of about 2-3 kg equivalent load vertically with a 2:1 margin at 0.5 MPa.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-30SB the Right Cylinder?
At 56.5 N push at 0.5 MPa this bore suits light clamping and part presence tasks; drop to a smaller bore only if you need even less force, and step up to a 16 mm bore (100.5 N push at 0.5 MPa) when loads creep past about 34 N of working force. The 30 mm window means you can dial the extend stroke anywhere from 20 to 50 mm on site. Remember the stop screw is an end stop, not a mid-stroke lock: on air loss the piston still drifts, so add a valve or external stop if you must hold position. FA flange or LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report end positions.
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 ACEJ12X50-30SB FAQ
Push is 56.5 N and pull 42.4 N at 0.5 MPa; at 0.7 MPa push rises to 79.2 N and pull to 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting with a 30 mm adjustable window on the 50 mm stroke (usable 20-50 mm), runs on air at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, and uses an M5x0.8 port with a 6 mm male-thread rod.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits slim jigs and guarded machines. A fixed TPU bumper at each end absorbs end-of-stroke impact. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be mounted in the body slots; FA flange and LB foot mountings bolt straight to the ISO 21287 face.
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