Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50SB 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 ACEJ12X50-50SB
The ACEJ12X50-50SB is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 50 mm stroke anywhere in the ordered -50 window, giving a usable range of 0-50 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, which suits light clamping, ejecting and positioning in tight fixtures.
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim jigs and guarded stations where a full-length body will not fit. Because the -S magnet is fitted on this model, CMSE / DMSE reed or solid-state switches can be mounted directly in the body slots for end-of-stroke signalling. A practical sizing note: plan on roughly 34 N of real work at 0.5 MPa, which lifts about 3 kg vertically - and halve that again for a 2:1 margin on actual lifts.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50SB |
|---|---|
| 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 ACEJ12X50-50SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -50 | 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 ACEJ12X50-50SB Is Used
Micro part clamping
Holds small PCB fixtures or connector housings in test stations, where the 56.5 N push at 0.5 MPa is enough and the trimmed 0-50 mm stroke clears the nest.
Signalled eject station
Ejects sorted components from a pick tray on an assembly line; the fitted -S magnet drives CMSE / DMSE switches so the PLC confirms each stroke.
Slide pusher in a slim jig
Nudges a light carriage sideways inside a compact gauge, using the short ISO 21287 body where an ISO 15552 profile cylinder would not fit.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50SB the Right Cylinder?
At the small end of the range, this 12 mm bore gives 56.5 N push at 0.5 MPa; step up to bore 16 for 100.5 N or bore 20 for 157.1 N if the load grows. The male rod thread (B code) takes external tooling directly, and the PT port keeps plumbing simple. Note that the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock - on air loss the piston still drifts, so add a separate clamp if the load must be held. FA flange or LB foot mounts bolt to the standard face, and the fitted -S magnet pairs with CMSE / DMSE switches.
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 ACEJ12X50-50SB FAQ
At 0.5 MPa: 56.5 N push and 42.4 N pull. At 0.7 MPa: 79.2 N push and 59.4 N pull. Theoretical maximum is 11.5 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke (0-50 mm via the -50 stop screw), runs on air filtered to 40 um 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, with a fixed TPU bumper at both ends.
The hard-anodized aluminium body with an S45C hard-chrome-plated rod is about 50% shorter in mounting length than an ISO 15552 profile cylinder, and FA flange or LB foot mounts bolt to the standard ISO 21287 face. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be clipped into the body slots; without the -S code there is no magnet. The rod end is male thread (B code) with an M5x0.8 port.
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