Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-75S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-75S 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 ACEJ20X80-75S
Double acting and stroke-trimmable, the ACEJ20X80-75S gives a 20 mm bore with an 80 mm stroke that an external stop screw can shorten anywhere inside a 75 mm window, so the working extend range is 5-80 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those rise to 219.9 N and 164.9 N, with a theoretical ceiling of 32 kgf at 1.0 MPa. As a rule of thumb, plan on roughly 94 N of real work at 0.5 MPa, which is about 9 kg of vertical lift with a 2:1 margin.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures, pick stations and guarding where a full-length body cannot. The hard-anodized aluminium barrel carries a hard-chrome-plated S45C rod, fixed TPU bumpers sit at both ends, and because this model carries the -S magnet, CMSE or DMSE reed and solid-state switches can be clamped into the body slots for end-of-travel sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-75S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-75S |
|---|---|
| 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 ACEJ20X80-75S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -75 | 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 ACEJ20X80-75S Is Used
Carton height changeover
One cylinder serves multiple carton depths on a packaging line: the stop screw trims the 80 mm stroke down to as little as 5 mm, and the fitted magnet signals home position via a CMSE switch.
Sample press in lab automation
With 157.1 N push at 0.5 MPa, about 9 kg of safe vertical lift, the 20 mm bore presses vials or sensor caps in compact analyser heads where a full-length body will not fit.
Small-part divert on conveyors
The short ISO 21287 body mounts between conveyor frames to kick small components off a belt, with DMSE switch feedback confirming the diverter reached the trimmed end position.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-75S the Right Cylinder?
Size up or down against real forces: the 16 mm bore delivers 100.5 N push at 0.5 MPa, while the 25 mm bore reaches 245.4 N, so this 20 mm unit at 157.1 N sits squarely between them for light clamping and transfer duties. The 75 mm window makes one cylinder cover several product heights; just remember the stop screw trims the extend stroke only and is not a mid-stroke lock, so a load will drift if air is lost. FA flange or LB foot mounts bolt to the ISO 21287 face, the rod end is female M6x1.0, and the fitted -S magnet means CMSE / DMSE switches work out of the box.
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 ACEJ20X80-75S 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. Operating pressure is 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, air filtered to 40 um. The extend stroke is 80 mm, trimmable by stop screw within the 75 mm window, and the port is M5x0.8.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium barrel, S45C hard-chrome rod and fixed TPU bumpers at both ends that decelerate the piston at each end of travel. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be fitted in the body slots. FA flange and LB foot mounts bolt straight to the ISO 21287 face; the rod end is female M6x1.0.
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