Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75 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 ACEJ20X75-75
A double acting ISO 21287 compact cylinder with an adjustable extend stroke, the ACEJ20X75-75 pairs a 20 mm bore with a 75 mm stroke and an external stop screw that trims the extend stroke anywhere in the 0-75 mm window on site. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight jigs, guards and gantry frames where a full-length body simply will not fit.
For real-world sizing, plan on roughly 94 N of usable push at 0.5 MPa (about 60% of the rating), which means this unit lifts about 8 kg vertically with a 2:1 margin - enough for small clamps, part presenters and light pick-and-place heads. The hard-anodized aluminium body carries a 10 mm S45C hard-chrome rod with a female M6x1.0 thread, and a fixed TPU bumper at each end absorbs end-of-stroke shock. Note that no magnet is fitted on this version; order the -S code if you later need CMSE / DMSE switch position sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75 |
|---|---|
| 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 ACEJ20X75-75
| 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 ACEJ20X75-75 Is Used
Small press-fit clamping
Clamping brackets or bearing caps on an electronics assembly fixture, where the 0-75 mm trim lets one cylinder serve several product heights and 94 N of working force seats light press parts.
Light part lifting
Raising connectors or small housings from a feeder chute to a conveyor, lifting about 8 kg vertically with a 2:1 margin and the short body fitting under a low machine guard.
Slide and gate actuation
Pushing small parts off a indexing table or diverting a light gate on a packaging line, with the stop screw set so the extend stroke matches each station pitch without changing hardware.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-75 the Right Cylinder?
Check the load both ways before committing: one bore down, the ACEJ16 delivers 100.5 N push at 0.5 MPa, while the ACEJ25 steps up to 245.4 N - so if your clamp or lifter needs more than about 94 N of working force, move to the 25 mm bore. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the rod will still drift if air is lost; add a separate valve or lock for load holding. FA flange and LB foot mountings bolt straight to the ISO 21287 face, and the optional -S magnet enables CMSE / DMSE switches if position feedback is added later.
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 ACEJ20X75-75 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; the 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 by up to 75 mm, giving a usable range of 0-75 mm. It runs double acting 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 a fixed TPU bumper at both ends.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow fixtures and guarded spaces. FA flange and LB foot mountings plus I/Y rod knuckles bolt to the standard face. This version has no magnet fitted, so no sensor can be read from it; order the -S variant to enable CMSE or DMSE reed / solid-state switches. The rod end is female M6x1.0 and the port is M5x0.8.
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