Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 75mm 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
- Stroke75 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 ACEJ20X75-75S
Double acting and built to the ISO 21287 compact format, the ACEJ20X75-75S gives a 20 mm bore with a 75 mm stroke that an external stop screw can trim anywhere in the 0-75 mm range. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N on extension at 0.7 MPa. The hard-anodized aluminium body is about 50% shorter in mounting length than an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot reach.
Because the -75 window covers the entire stroke, one cylinder can be dialled to 30 mm for a small part nest and later reset to 75 mm when the tooling changes, with no disassembly. The S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches read end positions directly on the body. Plan on roughly 94 N of usable push at 0.5 MPa, which lifts about 8 kg vertically with a 2:1 margin - enough for small plastic housings, sensor brackets or light clamping plates. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and a fixed TPU bumper sits at each end.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 75 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 ACEJ20X75-75S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×75 | 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 ACEJ20X75-75S Is Used
Adjustable part-stop on assembly conveyors
The 0-75 mm trim range lets a line engineer set the stop position per product size without swapping cylinders - 157.1 N at 0.5 MPa easily stalls small cartons or trays.
Small-part ejection from plastic injection moulds
With about 8 kg vertical lift capability and a 75 mm stroke, it pushes lightweight moulded clips or caps off the nest, and the CMSE switch confirms the eject is home.
Sample press in laboratory dispensing equipment
The compact body fits inside instrument guards, the M5x0.8 ports suit small manifolds, and 94 N of working force presses microplates or seals without crushing them.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75S the Right Cylinder?
Size up or down by force: the 16 mm bore delivers 100.5 N push at 0.5 MPa, while the 25 mm bore reaches 245.4 N. If your load needs more than about 94 N of working force, step to the 25 mm bore instead. The stop screw is a mechanical end stop for the extend stroke only - it does not hold position if air is lost, so add a separate locking solution for suspended loads. The female M6x1.0 rod thread accepts standard rod knuckles (I and Y types), and FA flange or LB foot mounts bolt to the ISO 21287 face. This model already carries the optional -S magnet, so order CMSE or DMSE switches separately.
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 ACEJ20X75-75S FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa push is 219.9 N and pull 164.9 N; theoretical maximum is 32 kgf at 1.0 MPa. The -75 code is a 75 mm adjustment window: an external stop screw shortens the 75 mm extend stroke anywhere down to 0 mm, so the usable range is 0-75 mm. It shortens the stroke only - it never extends past 75 mm, and it is not a mid-stroke lock, so the rod still drifts if air pressure is lost.
It is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome rod and fixed TPU bumpers at both ends. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be clipped into the body slots to signal end positions. Mounting options include FA flange and LB foot, plus I and Y rod knuckles on the female M6x1.0 thread. Operating range is 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s, with air filtered to 40 um.
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