Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm bore and 40mm 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
- Stroke40 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 ACEJ16X40-30S
The ACEJ16X40-30S is a double acting ISO 21287 compact cylinder with a 16 mm bore and a 40 mm stroke that an external stop screw trims down by up to 30 mm, giving a usable extend range of 10-40 mm. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N, rising to 140.7 N at 0.7 MPa. Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into slim fixtures, guarding and small gantries where a full-length body simply will not fit.
For sizing the load, treat roughly 60 N (about 6 kg of thrust) as the practical working force at 0.5 MPa, or plan vertical lifts of around 5 kg with a 2:1 margin. The S code means the magnet is fitted on this unit, so CMSE / DMSE reed or solid-state switches can be clamped straight into the body slots to report end positions. A hard-anodized aluminium body, S45C hard-chrome plated rod and fixed TPU bumpers at both ends round out the build.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 40 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 ACEJ16X40-30S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×40 | 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 ACEJ16X40-30S Is Used
Small-parts ejection from a plastic mold
A 10-40 mm adjustable nudge clears thin molded clips off the tool face; 100.5 N at 0.5 MPa is enough for parts under about 6 kg of resistance.
Position-verified test fixture on a PCB line
With the magnet fitted, CMSE or DMSE switches confirm the press pad has reached the board, and the stop screw dials in the exact contact depth.
Bottle-cap press on a packaging bench
The compact body tucks under a low guard, and trimming the stroke to 10-40 mm prevents over-crush on delicate caps at speeds of 30-500 mm/s.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30S the Right Cylinder?
At this bore class the 16 mm size delivers 100.5 N push at 0.5 MPa; step down to a 12 mm bore (56.5 N) for lighter pick-and-place, or up to 20 mm (157.1 N) if the tooling weight grows. The -30 window suits jobs where the final stroke is tuned on the machine rather than fixed on paper. Remember the stop screw only shortens the extend stroke and acts as an end stop, not a mid-stroke lock - on air loss the piston still drifts. FA flange, LB foot and I/Y rod knuckles bolt to the ISO 21287 face, and the fitted magnet accepts 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 ACEJ16X40-30S FAQ
Bore 16 mm, stroke 40 mm adjustable down to 10 mm via the -30 stop screw. Push is 100.5 N and pull 75.4 N at 0.5 MPa; at 0.7 MPa push rises to 140.7 N and pull to 105.6 N, with a theoretical maximum of 20.5 kgf at 1.0 MPa. It is double acting, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, port M5x0.8, rod 8 mm with female M4x0.7 thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits tight jigs and guards. This S-coded unit carries the optional magnet, so CMSE / DMSE reed or solid-state switches mount in the body slots for end-position sensing. Mounting options include FA flange and LB foot, and fixed TPU bumpers absorb end-of-stroke shock at both 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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