Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 60mm 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.
- BoreØ20 mm
- Stroke60 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- CushionFixed TPU bumper (both ends)
About the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30S
The ACEJ20X60-30S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: a 20 mm bore, 60 mm stroke and a 30 mm trim window, so an external stop screw lets you set the extend stroke anywhere between 30 and 60 mm on site. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa that rises to 219.9 N push. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be mounted in the body slots for end-of-stroke signalling.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs, guarding and gantry tooling. A rule of thumb for sizing: plan for roughly 94 N (about 60% of the push force) of real work at 0.5 MPa, which corresponds to lifting about 8 kg vertically, or roughly 4 kg with a 2:1 margin. The hard-anodized aluminium body, S45C hard-chrome plated rod and fixed TPU bumpers at both ends keep it running at 30-500 mm/s on air filtered to 40 um.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 60 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 100 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | 165 N |
| Max (@1.0 MPa) | 32 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 ACEJ20X60-30S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 ACEJ20X60-30S Is Used
Fixture clamping on CNC jigs
The 30-60 mm adjustable extend stroke lets one cylinder serve several fixture depths on a machining jig, with about 94 N of usable clamping force at 0.5 MPa.
Signalled ejection on assembly lines
With the fitted -S magnet, CMSE or DMSE switches confirm the eject stroke on small electronics assembly stations without adding external sensors.
Compact press-fit of connectors
The 20 mm bore delivers 219.9 N push at 0.7 MPa, enough to press-fit terminals and connectors inside machines too tight for an ISO 15552 profile cylinder.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30S the Right Cylinder?
At 157.1 N push at 0.5 MPa, this 20 mm bore sits between the 16 mm bore (100.5 N) and the 25 mm bore (245.4 N): step down to 16 mm for lighter pick-and-place loads, up to 25 mm if your part weight grows. The 30 mm window means the 60 mm stroke can be shortened but never extended past 60 mm, and the stop screw is a mechanical end stop only - on air loss the piston still drifts, so it is not a load-holding brake. FA flange or LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet works with CMSE / DMSE switches. Female M6x1.0 rod thread, PT ports.
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 ACEJ20X60-30S FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa, 219.9 N push and 164.9 N pull; theoretical maximum is 32 kgf at 1.0 MPa. It is double acting with a 30 mm adjustment window on the 60 mm stroke, 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 M5x0.8 ports and a female M6x1.0 rod thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder. Turn the external stop screw to trim the extend stroke anywhere in the 30 mm window (usable range 30-60 mm); fixed TPU bumpers absorb end-of-stroke energy at both ends. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount directly in the body slots. FA flange and LB foot mountings bolt straight to the ISO 21287 face.
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