Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 20mm 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.
- BoreØ12 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- CushionFixed TPU bumper (both ends)
About the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10S
A double acting ISO 21287 compact cylinder with a trimmable extend stroke, the ACEJ12X20-10S pairs a 12 mm bore with a 20 mm stroke and a 10 mm adjustment window. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N push at 0.7 MPa, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The external stop screw shortens the extend stroke on site anywhere in the 10-20 mm range, so one cylinder can be dialled to several fixture positions.
The short ISO 21287 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 micro-assembly stations. A hard-anodized aluminium body carries an S45C hard-chrome plated 6 mm rod, and fixed TPU bumpers absorb end-of-stroke shock. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clamped on the body slots for end-position sensing. Rule of thumb: expect roughly 34 N (about 3.5 kg) of usable work at 0.5 MPa, or plan on lifting about 2.8 kg vertically with a 2:1 margin.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 20 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 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 ACEJ12X20-10S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -10 | 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 ACEJ12X20-10S Is Used
Micro-assembly press head
The 56.5 N push at 0.5 MPa seats small connectors and clips in electronics assembly, and the 10-20 mm trim range lets one cylinder serve several product variants.
Compact part ejector
In a slim injection-mould fixture the short body, about 50% shorter than an ISO 15552 profile cylinder, ejects finished 3-5 g parts where space behind the mould is tight.
Position-verified sorting gate
With the fitted -S magnet and CMSE switches, the 20 mm stroke confirms gate-open and gate-closed states on a small conveyor diverter running at 30-500 mm/s.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10S the Right Cylinder?
At this bore size the neighbours matter: a 16 mm bore gives 100.5 N push at 0.5 MPa if 56.5 N feels marginal, while stepping down is not possible since 12 mm is the smallest ACEJ bore. The 6 mm rod with female M3x0.5 thread suits light tooling plates and small knuckles; add the B code if you need a male thread. Remember the stop screw only trims the extend stroke and is not a mid-stroke lock, so the rod will drift if air is lost under load. FA flange or LB foot mounts bolt to the ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report end positions without any extra ordering step.
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 ACEJ12X20-10S FAQ
At 0.5 MPa it delivers 56.5 N push and 42.4 N pull; at 0.7 MPa, 79.2 N push and 59.4 N pull; theoretical maximum 11.5 kgf at 1.0 MPa. The base stroke is 20 mm and the -10 stop screw trims the extend stroke anywhere within a 10 mm window, giving a usable 10-20 mm range. Operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, speed 30-500 mm/s, and the port is M5x0.8.
It is an ISO 21287 compact cylinder: hard-anodized aluminium body, S45C hard-chrome plated 6 mm rod, threaded aluminium covers and fixed TPU bumpers at both ends, roughly 50% shorter in mounting length than an ISO 15552 profile cylinder. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches mount directly in the body slots. FA flange and LB foot mounts bolt to the standard ISO 21287 face.
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