Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50S
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50S is a genuine double acting, double rod, 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, 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 ACEJ12X50-50S
The ACEJ12X50-50S 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 0-50 mm window, so one cylinder serves several fixture positions. The -S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted anywhere along the body slots.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters in slim pick-and-place heads and guarded cells. A hard-anodized aluminium body carries an S45C hard-chrome-plated 6 mm rod with a female M3x0.5 thread, and fixed TPU bumpers at both ends absorb end-of-stroke shock.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 50 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 ACEJ12X50-50S
| 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 (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 ACEJ12X50-50S Is Used
Position-verified gating
A light gate or diverter on a conveyor for electronic components: with the fitted -S magnet, CMSE / DMSE switches confirm extend and retract, while the compact body fits where a full-length cylinder cannot.
Lab and test fixture actuation
Pressing probes or sample holders in a small test rig: the 3 kg vertical-lift equivalent covers light loads, the M5x0.8 ports suit compact manifolds, and the stop screw sets exact probe depth.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X50-50S the Right Cylinder?
Stay with this 12 mm model for light ejection, gating and sensor-checked micro positioning where space is tighter than the force budget. Note that the stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. Mounting options include FA flange and LB foot, with I or Y rod knuckles; the fitted -S magnet accepts CMSE / DMSE switches for end-of-stroke signalling. Air supply: 0.15-1.0 MPa (22-145 psi), filtered to 40 um, speed 30-500 mm/s.
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 ACEJ12X50-50S FAQ
This 12 mm bore model pushes 56.5 N and pulls 42.4 N at 0.5 MPa, and pushes 79.2 N (pull 59.4 N) at 0.7 MPa, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The ordered stroke is 50 mm and the -50 stop screw trims the extend stroke anywhere in a 0-50 mm window. It is double acting, runs at 30-500 mm/s on 0.15-1.0 MPa (22-145 psi) air, and carries a 1.5 MPa (215 psi) proof rating.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarded assemblies. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be clipped into the body slots for position feedback. It bolts to FA flange or LB foot mounts, takes I or Y rod knuckles on the M3x0.5 female rod thread, and fixed TPU bumpers at both ends absorb end-of-stroke impact.
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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.
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