Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10S 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 ACEJ20X75-10S
The ACEJ20X75-10S is a double acting ISO 21287 compact cylinder with a 20 mm bore and a 75 mm stroke that an external stop screw trims on site. The -10 code gives a 10 mm adjustment window, so the usable extend range is 65-75 mm; turning the screw in shortens the stroke, it never lengthens it past 75 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N push at 0.7 MPa, with a theoretical 32 kgf ceiling at 1.0 MPa.
The short ISO 21287 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. A hard-anodized aluminium barrel carries an S45C hard-chrome rod, with a fixed TPU bumper at each end to soften arrival. In practical terms, plan for roughly 94 N of real work at 0.5 MPa, which is about 8 kg of vertical lift with a 2:1 margin - enough for small clamps, gates or part ejection. The fitted -S magnet lets CMSE / DMSE switches report end positions, and FA flange or LB foot mounts bolt straight to the ISO 21287 face.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10S |
|---|---|
| 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 ACEJ20X75-10S
| 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 ACEJ20X75-10S Is Used
Fixture clamp with trim
On a small machining fixture, the 10 mm window lets you dial the clamp stroke between 65 and 75 mm to suit different part heights, with 157.1 N of push at 0.5 MPa holding light workpieces.
Position-verified ejector
A small parts-handling station uses the fitted -S magnet with CMSE switches to confirm the 75 mm eject stroke completed, while the TPU bumpers quiet the return at 30-500 mm/s.
Compact gate pusher
Inside a packaging machine guard, the short body - about 50% shorter than an ISO 15552 profile cylinder - pushes a sliding gate with 219.9 N available at 0.7 MPa.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X75-10S the Right Cylinder?
Size around the load: at 0.5 MPa this 20 mm bore delivers 157.1 N push and 117.8 N pull, so keep continuous demand near 94 N. If your load needs more, the 25 mm bore gives 245.4 N push; if less, the 16 mm bore still manages 100.5 N. Remember the stop screw is a mechanical end stop only - on air loss the piston drifts, so it is not a mid-stroke lock. Choose the female M6x1.0 rod thread as coded here, or the B variant for male thread, and add FA or LB mounting to match the fixture. This unit already carries the -S magnet for CMSE / DMSE switch mounting.
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 ACEJ20X75-10S 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 range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um, temperature -20 to +70 C. The extend stroke is adjustable from 65 to 75 mm via the stop screw, and the M5x0.8 port matches the 20 mm bore.
It is an ISO 21287 compact cylinder: hard-anodized aluminium body, S45C hard-chrome plated rod, threaded aluminium covers and a fixed TPU bumper at each end. The body saves about 50% of the mounting length of an ISO 15552 profile cylinder. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be clamped into the body slots; FA flange and LB foot mounts bolt to the standard ISO 21287 face.
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