Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20S 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 ACEJ20X60-20S
The ACEJ20X60-20S is a double acting ISO 21287 compact cylinder with a 20 mm bore and a 60 mm stroke that can be trimmed on site by up to 20 mm, giving a usable extend range of 40-60 mm. An external stop screw shortens the extend stroke mechanically; it is an end stop, not a mid-stroke lock, so the piston still drifts if air is lost. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N at 0.7 MPa, with a theoretical ceiling 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, so it slots into tight fixtures and guarding. Applying the usual 0.6 rule of thumb to the 157.1 N push gives roughly 94 N of practical working force, which is about 9 kg of vertical lift with margin - enough for small fixtures, gates and pick-and-place parts. The -S magnet is fitted on this model, so CMSE / DMSE reed or solid-state switches can be mounted directly in the body slots.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20S |
|---|---|
| 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 ACEJ20X60-20S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | Stroke length in mm. |
| -20 | 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 ACEJ20X60-20S Is Used
Small fixture clamping
Trims its 60 mm extend stroke down to 40 mm on the stop screw to clamp small machined parts in drilling or milling jigs with 157.1 N of push force.
Pick-and-place lifting
With about 9 kg of practical vertical lift at 0.5 MPa, it raises small plastic housings or PCB trays in electronics assembly cells, the -S magnet feeding CMSE switch signals to the PLC.
Gated packaging stations
Acts as a short-stroke stopper or gate on a packaging conveyor, its compact body fitting where an ISO 15552 profile cylinder would overhang the frame.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20S the Right Cylinder?
At 157.1 N push (0.5 MPa) this 20 mm bore suits light clamping and small part handling; step down to the 16 mm bore (100.5 N) for lighter loads or up to the 25 mm bore (245.4 N) when more force is needed. The 60 mm stroke sits well inside the 100 mm maximum standard stroke for this bore. Choose the female M6x1.0 rod thread as coded, add FA flange or LB foot mounting to match the fixture, and remember the stop screw only shortens the extend stroke within the 20 mm window - it never holds a load on air loss.
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 ACEJ20X60-20S 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 the theoretical maximum is 32 kgf at 1.0 MPa. It is double acting with a 20 mm adjustable extend window (usable 40-60 mm), runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, with a 10 mm rod and M5x0.8 ports.
The hard-anodized aluminium ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end to absorb end-of-stroke energy. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount in the body slots for end-position sensing. FA flange, LB foot and I/Y rod knuckles bolt to the standard ISO 21287 face.
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