Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 80mm 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
- Stroke80 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 ACEJ20X80-30
A double acting ISO 21287 compact cylinder with an adjustable extend stroke, the ACEJ20X80-30 pairs a 20 mm bore with an 80 mm stroke and a 30 mm trim window. An external stop screw shortens the extend stroke on site anywhere in the 50-80 mm range, so one cylinder serves several jig positions without re-plumbing. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those rise to 219.9 N and 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight guarding and slide fixtures. In practice, plan on roughly 94 N of usable push at 0.5 MPa, which lifts about 8 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries a hard-chromed S45C rod, fixed TPU bumpers sit at both ends, and the optional -S magnet enables CMSE / DMSE switches - without -S there is no magnet fitted.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 80 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 ACEJ20X80-30
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 ACEJ20X80-30 Is Used
Small-part press fitting
The 157.1 N push at 0.5 MPa seats bearings, bushings and dowel pins in electronics and small appliance assemblies, with the 50-80 mm trim window matching varying part heights.
Fixture clamping on machining tables
Clamps jigs on CNC fixtures where the short ISO 21287 body fits under guarding that a full-length profile cylinder cannot, and the stop screw sets exact clamp position per jig.
Packaging line part stops
Stops or diverts cartons and blisters on conveyor transfers, lifting about 8 kg vertically with a 2:1 margin, running 30-500 mm/s to keep pace with the line.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30 the Right Cylinder?
Size against the load: the 16 mm bore delivers 100.5 N push at 0.5 MPa, while stepping up to the 25 mm bore gives 245.4 N. If your fixture needs roughly 94 N of working force, this 20 mm bore is the balanced pick. The stop screw is a mechanical end stop for the extend stroke only - on air loss the piston still drifts, so add a separate valve or lock if the load must be held. FA flange or LB foot mounts bolt to the ISO 21287 face, and order the -S code if CMSE / DMSE position sensing is planned.
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 ACEJ20X80-30 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 32 kgf at 1.0 MPa. The 20 mm bore has an M5x0.8 port, a 10 mm hard-chromed rod with female M6x1.0 thread, PT body ports, operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and a temperature range of -20 to +70 C on air filtered to 40 um.
The -30 code is a 30 mm window: an external stop screw shortens the 80 mm extend stroke to any length from 50 to 80 mm, set by hand on the machine. It is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. Fixed TPU bumpers absorb end-of-stroke shock at both ends. For position feedback, order the optional -S magnet so CMSE / DMSE switches can be mounted on the body slots; this model without -S carries no magnet.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X80-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.