Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10 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 ACEJ20X75-10
A double acting ISO 21287 compact cylinder, the ACEJ20X75-10 pairs a 20 mm bore with a 75 mm stroke that an external stop screw can trim on site by up to 10 mm, giving a usable extend range of 65-75 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, and its 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 cannot.
In service terms, plan for roughly 94 N (about 9 kg) of real work at 0.5 MPa rather than the full rating, which covers lifting small fixtures or parts of that weight with margin. The hard-anodized aluminium body carries a hard-chromed S45C rod with a female M6x1.0 thread, fixed TPU bumpers absorb end-of-stroke shock at both ends, and the optional -S magnet enables CMSE / DMSE switches when position feedback is needed.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10 |
|---|---|
| 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 ACEJ20X75-10
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -10 | 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 ACEJ20X75-10 Is Used
Small-part ejection from plastic molds
The 65-75 mm adjustable extend range lets a mold setter trim the ejector throw to clear a shallow cavity, with 157.1 N at 0.5 MPa enough to part lightweight components.
Sample vial indexing on lab automation decks
A 75 mm travel moves vials between stations, and the short ISO 21287 body fits under low deck guards where an ISO 15552 profile cylinder would not.
Carton flap tuck on a packaging line
About 9 kg of usable vertical push at 0.5 MPa seats flaps reliably, while the 30-500 mm/s speed range matches typical tuck-and-fold cycle rates.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10 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 up to 25 mm if your load approaches the 94 N working figure with little margin, or down to 16 mm for lighter clamping. The -10 stop screw shortens the extend stroke only - it never lengthens it past 75 mm - and it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. Specify FA flange or LB foot mounting to match standard ISO 21287 fixtures, and add the -S code if CMSE / DMSE sensing is planned.
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 ACEJ20X75-10 FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa push rises to 219.9 N and pull to 164.9 N, with a theoretical maximum of 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, and the air supply must be filtered to 40 um. The stop screw trims the extend stroke within the ordered 10 mm window (65-75 mm).
An external stop screw shortens the extend stroke on site by up to 10 mm, so the 75 mm stroke can be set anywhere from 65 to 75 mm; it is a mechanical end stop and does not hold a load if air is lost. Sensing is available only with the optional -S magnet, which allows CMSE / DMSE switches on the body slots - without -S there is no magnet. The fixed TPU bumpers at both ends simply decelerate the piston at each end of travel.
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