Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-20
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-20 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm 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.
- BoreØ16 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM4×0.7
- 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 ACEJ16X50-20
The ACEJ16X50-20 is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. A stop screw on the outside of the body trims the 50 mm stroke by up to 20 mm, giving a usable range of 30-50 mm without changing the order code. At 0.5 MPa the 16 mm bore pushes 100.5 N and pulls 75.4 N, which suits light clamping and positioning in tight fixtures. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits where a full-length cylinder will not.
For day-to-day sizing, plan on roughly 60 N of real work at 0.5 MPa instead of the full 100.5 N rating, and treat the bore as lifting about 10 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries a hard-chrome plated S45C rod with an M4x0.7 female thread, and a fixed TPU bumper at each end absorbs end-of-stroke impact. The magnet is not fitted on this code; order the -S variant if you need CMSE or DMSE switch sensing. Speed range is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-20 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-20 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 75 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 (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 75 N |
| 0.7 MPa | 141 N | 106 N |
| Max (@1.0 MPa) | 21 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 ACEJ16X50-20
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -20 | 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 ACEJ16X50-20 Is Used
Small-part ejection stamping
Ejects finished terminals or connector pins from a micro stamping die, with the stop screw trimmed to 35 mm so the rod clears the tooling exactly.
Bench-top fixture clamping
Clamps PCB brackets or aluminium fittings on an assembly bench; about 60 N of usable clamping force at 0.5 MPa holds light parts securely.
Compact gating on a test line
Swings or stops small components between vision stations; with the -S magnet ordered, CMSE or DMSE switches confirm end positions in a guard-limited envelope.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-20 the Right Cylinder?
If 100.5 N of push at 0.5 MPa is more than your jig needs, the 12 mm bore (56.5 N) saves space; if you need roughly four times the force, step up to the 25 mm bore at 245.4 N. Both share the same M5x0.8 port. Remember the stop screw only shortens the extend stroke within the 20 mm window and is not a mid-stroke lock, so the rod still drifts if air is lost. FA flange or LB foot mounting bolts to the ISO 21287 face, and the -S magnet code is required before CMSE / DMSE switches can be used.
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 ACEJ16X50-20 FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those rise to 140.7 N and 105.6 N. The theoretical maximum is 20.5 kgf at 1.0 MPa. It is double acting with a 16 mm bore, 50 mm stroke adjustable down to 30 mm via the -20 stop screw, M5x0.8 ports, an M4x0.7 female rod thread, 30-500 mm/s speed and 0.15-1.0 MPa (22-145 psi) operating pressure with 1.5 MPa (215 psi) proof pressure.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into narrow jigs and guarded gantries. Sensing is not included by default: the magnet is the optional -S code, and only when that is ordered can CMSE or DMSE switches be clipped to the body. FA flange and LB foot mounts bolt straight to the standard face, and fixed TPU bumpers at both ends soften the stroke ends.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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