Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-30B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-30B 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 ACEJ20X90-30B
The ACEJ20X90-30B is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 90 mm stroke by up to 30 mm on site, giving a usable 60-90 mm range. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N push at 0.7 MPa. The hard-anodized aluminium body and S45C hard-chrome plated rod suit 0.15-1.0 MPa (22-145 psi) air filtered to 40 um, running 30-500 mm/s.
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 gantries. For sizing, treat roughly 94 N (about 9.6 kg) as the practical working push at 0.5 MPa, or expect it to lift about 8 kg vertically with a 2:1 margin. Fixed TPU bumpers absorb end-of-stroke energy at both ends, and the male rod thread (B code) bolts to standard tooling.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-30B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-30B |
|---|---|
| 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 ACEJ20X90-30B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| -30 | 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 ACEJ20X90-30B Is Used
Fixture clamping on CNC pallets
The 60-90 mm adjustable range matches varying pallet heights, and 157.1 N push at 0.5 MPa secures small aluminium parts without over-clamping.
Small-part press fitting
Around 94 N of practical working force at 0.5 MPa is enough to seat bushings, pins and connectors in electronics assembly.
Packaging line part stops
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, letting the stop sit inside a narrow conveyor frame.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-30B the Right Cylinder?
At 157.1 N push at 0.5 MPa, the 20 mm bore sits between the 16 mm bore (100.5 N) and the 25 mm bore (245.4 N); step up if your fixture needs more margin. The 90 mm stroke is within the 100 mm maximum standard stroke for this bore, so no made-to-order build is required. The stop screw shortens the extend stroke only - it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts on air loss. FA flange or LB foot mounts and I/Y rod knuckles fit the ISO 21287 face; PT ports are standard and G threads are available. This unit has no magnet - order the -S code if you need CMSE / DMSE switch sensing.
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 ACEJ20X90-30B 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, with a theoretical maximum of 32 kgf at 1.0 MPa. The -30 code sets a 30 mm adjustment window: the external stop screw shortens the 90 mm extend stroke by up to 30 mm, so the working range is 60-90 mm. It cannot lengthen the stroke beyond 90 mm.
It is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end and FA/LB mounting options. Position sensing requires the optional -S magnet code; this unit (no S) has no magnet, so CMSE or DMSE switches cannot be mounted unless you order the -S version.
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