Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30B is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 60mm 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
- Stroke60 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 ACEJ20X60-30B
The ACEJ20X60-30B is a double acting ISO 21287 compact cylinder with a 20 mm bore and a 60 mm stroke that an external stop screw trims by up to 30 mm, giving a usable extend range of 30-60 mm on site. 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 32 kgf at 1.0 MPa. The male rod thread (B code) bolts straight into standard knuckles and tooling.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs, guards and gantries. In practice, plan for roughly 94 N of real work at 0.5 MPa (about 0.6 of the push force), which is a vertical lift of about 8 kg with a 2:1 margin. A fixed TPU bumper at each end absorbs end-of-stroke energy, the hard-anodized aluminium body carries an S45C hard-chrome rod, and speeds run 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 60 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 ACEJ20X60-30B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 ACEJ20X60-30B Is Used
Small-part ejection from plastic molds
The 157.1 N push at 0.5 MPa is enough to kick lightweight molded caps off a bench-top mold, and the 30 mm window lets operators trim the 60 mm stroke down to 30 mm so parts clear the tool without over-travel.
Indexing stops on rotary assembly tables
As a pop-up stop on a dial table, the male-threaded 10 mm rod accepts a custom stop pad, and the stop screw lets each station be tuned between 30 and 60 mm without changing cylinders.
Sample press in a lab test rig
A vertical lift of about 8 kg with a 2:1 margin covers small specimen pressing, and the compact body fits test fixtures where an ISO 15552 profile cylinder would be roughly twice as long.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-30B the Right Cylinder?
At 157.1 N push (0.5 MPa) this 20 mm bore suits light clamping and positioning. Step down to the 16 mm bore (100.5 N) for smaller loads, or up to the 25 mm bore (245.4 N) when the job needs more muscle. The 60 mm stroke sits well inside the 100 mm maximum standard stroke for this bore. Remember the stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. No magnet is fitted on this version; order the -S code if you later need CMSE / DMSE switch sensing, and add FA flange or LB foot mounts to match your fixture.
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 ACEJ20X60-30B FAQ
At 0.5 MPa the 20 mm bore delivers 157.1 N push and 117.8 N pull; at 0.7 MPa it reaches 219.9 N push and 164.9 N pull, with a theoretical maximum of 32 kgf at 1.0 MPa. The base stroke is 60 mm and the -30 code gives a 30 mm adjustment window, so the extend stroke can be trimmed anywhere from 30 to 60 mm. It runs at 30-500 mm/s on 0.15-1.0 MPa (22-145 psi) air, with a 1.5 MPa (215 psi) proof pressure and a -20 to +70 C temperature range. The rod is 10 mm with a male thread, and the port is M5x0.8.
An external stop screw shortens the extend stroke within the ordered 30 mm window - turn it in to reduce travel, out to increase it, up to the full 60 mm. It is a mechanical end stop only, so it never holds a load if air pressure drops. Mounting covers FA flange and LB foot options plus I and Y rod knuckles on the ISO 21287 face. Sensing needs the optional -S magnet code, which enables CMSE or DMSE switches; this model without -S carries no magnet, so no switch can be mounted.
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