Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 90mm 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
- Stroke90 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 ACEJ20X90-10S
A double acting compact actuator built to ISO 21287, the ACEJ20X90-10S pairs a 20 mm bore with a 90 mm stroke and an external stop screw that trims the extend stroke by up to 10 mm on site, giving a usable range of 80-90 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 ceiling of 32 kgf at 1.0 MPa. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarded cells where a full-length body will not fit.
The hard-anodized aluminium body carries a roller-burnished bore, and the S45C hard-chrome plated rod runs in a two-way seal that stores grease for long service. A fixed TPU bumper at each end absorbs end-of-stroke energy. Because this model carries the -S magnet, CMSE / DMSE reed or solid-state switches can be clamped straight onto the body for end-of-travel sensing. As a rule of thumb, plan on roughly 94 N (about 9.6 kg) of usable vertical work at 0.5 MPa, and with a 2:1 margin expect it to lift about 4.8 kg vertically.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 90 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 ACEJ20X90-10S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | 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 ACEJ20X90-10S Is Used
Fixture clamping on CNC jigs
The 157.1 N push at 0.5 MPa holds aluminium or plastic workpieces in drill and milling jigs, while the 10 mm trim window lets you dial the clamp position between 80 and 90 mm without swapping cylinders.
Position-verified eject on small assembly stations
With the -S magnet fitted, CMSE / DMSE switches confirm the rod has reached the trimmed end position before the next pick-and-place cycle starts, at speeds of 30-500 mm/s.
Bottle and carton press-down in packaging cells
The compact body, about 50% shorter than an ISO 15552 profile cylinder, fits inside guarding where space is tight, and the 32 kgf theoretical class handles light press and snap-fit tasks.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10S the Right Cylinder?
Size by load first: at 0.5 MPa this 20 mm bore delivers 157.1 N push, enough for clamping and indexing light parts. If your load needs more, step up to the 25 mm bore at 245.4 N push; if less force and a shorter body work, the 16 mm bore gives 100.5 N. Both neighbours share the same M5x0.8 port. 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. FA flange or LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report position.
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 ACEJ20X90-10S FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa it pushes 219.9 N and pulls 164.9 N; the theoretical maximum is 32 kgf at 1.0 MPa. The -10 code is a 10 mm adjustment window: an external stop screw shortens the 90 mm extend stroke by up to 10 mm, so the working range is 80-90 mm. It shortens the stroke only and acts as a mechanical end stop, not a load-holding brake. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um, temperature -20 to +70 C.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA flange or LB foot mountings bolt straight to its standard face. A fixed TPU bumper at each end absorbs end-of-stroke energy. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be mounted on the body slots for position feedback; without -S there is no magnet. The rod end is female M6x1.0 and the air port is M5x0.8.
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