Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 80mm 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
- Stroke80 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 ACEJ20X80-30S
A double acting compact actuator built to ISO 21287, the ACEJ20X80-30S pairs a 20 mm bore with an 80 mm stroke that an external stop screw trims anywhere in a 30 mm window, giving a usable extend range of 50-80 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N on the extend stroke at 0.7 MPa. The hard-anodized aluminium body with an S45C hard-chrome rod runs at 0.15-1.0 MPa (22-145 psi) and 30-500 mm/s.
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. Because the -S magnet is fitted, CMSE or DMSE reed and solid-state switches mount directly in the body slots for end-of-travel signals. As a rule of thumb, plan on roughly 94 N (about 9.6 kg of force) of usable push at 0.5 MPa, and expect it to lift about 8 kg vertically with a 2:1 margin.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 80 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 ACEJ20X80-30S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 ACEJ20X80-30S Is Used
Jig clamping on CNC fixtures
The 50-80 mm adjustable extend range lets a machinist dial in clamp travel per fixture, while the 157.1 N push at 0.5 MPa holds small aluminum parts firmly.
Packaging line push-off arms
At 30-500 mm/s the rod ejects cartons or blisters from a conveyor lane, and the fitted -S magnet feeds CMSE switch signals back to the PLC for cycle counting.
Lab sample press station
The compact body, about 50% shorter in mounting length than an ISO 15552 profile cylinder, fits inside benchtop enclosures where a light 16 kg-class press force is enough.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30S the Right Cylinder?
Size this bore when your load sits under about 94 N of real working force at 0.5 MPa. A 16 mm bore delivers 100.5 N push at 0.5 MPa if the duty is lighter, while a 25 mm bore gives 245.4 N push at 0.5 MPa when you need more headroom. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the rod can still drift if air is lost. FA flange or LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet lets you add CMSE / DMSE switches without reordering.
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 ACEJ20X80-30S FAQ
This 20 mm bore model pushes 157.1 N and pulls 117.8 N at 0.5 MPa, and pushes 219.9 N at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. It is double acting with an 80 mm stroke adjustable down to 50 mm via the -30 stop screw, runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um, operates from -20 to +70 C at 30-500 mm/s, and uses an M5x0.8 port with an M6x1.0 female rod thread.
The ISO 21287 short body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, and FA flange or LB foot plates bolt straight to its face. A fixed TPU bumper at each end absorbs end-of-stroke impact. Because the -S magnet is fitted on this variant, CMSE and DMSE reed or solid-state switches can be clipped into the body slots for position feedback.
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