Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75 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 ACEJ20X90-75
Double acting and built to the ISO 21287 compact format, the ACEJ20X90-75 gives you a 20 mm bore with a 90 mm stroke that an external stop screw can trim anywhere in a 75 mm window, so the working range is 15-90 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those figures rise to 219.9 N and 164.9 N, with a theoretical ceiling of 32 kgf at 1.0 MPa. The hard-anodized aluminium body and S45C hard-chrome plated rod keep wear down through the 30-500 mm/s speed band.
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into slim pick-and-place heads and test rigs where a full-length body will not fit. For planning, treat roughly 94 N (about 9.6 kg of thrust) as the practical working force at 0.5 MPa, and expect it to lift about 8 kg vertically once you keep a 2:1 margin. A fixed TPU bumper at each end absorbs end-of-stroke shock, FA flange or LB foot plates bolt to the standard face, and CMSE / DMSE switches work only if you order the optional -S magnet, which this model does not carry.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75 |
|---|---|
| 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 ACEJ20X90-75
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | 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 ACEJ20X90-75 Is Used
Small-parts ejection from molding fixtures
The 157.1 N push at 0.5 MPa clears nylon or aluminum components off a mold nest, and the 15-90 mm adjustable range lets one cylinder serve several cavity depths.
Bench-top leak and pressure testing
Compact enough for a guarded test enclosure, the 20 mm bore presses a probe or seal plug with about 94 N of usable force, with the stop screw setting contact depth per part.
Carton diverting on light conveyor lines
Mounted LB-foot down beside the belt, the cylinder pushes small parcels off a sorter lane; the fixed TPU bumper quiets each extend at speeds up to 500 mm/s.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75 the Right Cylinder?
If 157.1 N of push at 0.5 MPa is more than your jig needs, the 16 mm bore delivers 100.5 N in the same compact envelope; if you need more, step up to the 25 mm bore for 245.4 N. Remember the stop screw only shortens the extend stroke within the ordered 75 mm window, and it is a mechanical end stop, not a mid-stroke lock: on air loss the piston still drifts, so add a separate valve or clamp where position must be held. Match FA flange or LB foot mounting to your fixture, and add the -S code if you later want CMSE / DMSE switch position feedback.
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 ACEJ20X90-75 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. The 20 mm bore runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, with a 90 mm stroke adjustable down to 15 mm via the 75 mm stop-screw window and an M5x0.8 port.
The ISO 21287 short body takes roughly half the mounting length of an ISO 15552 profile cylinder, so it fits tight gantries and slides. FA flange and LB foot brackets bolt to the standard face, and the rod ends in a female M6x1.0 thread. Switches are CMSE / DMSE types, but they only work when the optional -S magnet is ordered; this version has no magnet, so confirm the -S code at purchase if sensing is planned.
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