Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10B
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10B is a genuine double acting, double rod, 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, double rod, adjustable stroke
- Rod threadM3×0.5
- CushionFixed TPU bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10B
The ACEJ12X20-10B is a double acting AirTAC compact cylinder built to ISO 21287, with a 12 mm bore and a 20 mm stroke that an external stop screw can trim anywhere in a 10 mm window, giving a usable extend range of 10-20 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those figures rise to 79.2 N and 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures where a full-length body simply will not fit.
The hard-anodized aluminium body carries a hard-chrome plated S45C rod with a male thread (the B code), a fixed TPU bumper sits at both ends, and the optional -S magnet enables CMSE / DMSE switches - without that code no magnet is fitted.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 20 mm |
| Acting type | Double acting, double rod, 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 kgf |
ACEJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10B
| 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 (double rod, 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 ACEJ12X20-10B Is Used
Micro part clamping
Holds small electronics or watch-movement parts in a machining fixture, where the 10-20 mm adjustable extend range lets you dial in the exact clamp position without shimming.
Presence push-off on PCB lines
Ejects rejected PCBs from a conveyor lane; with the optional -S magnet a CMSE or DMSE switch confirms the rod has retracted between cycles.
Sample press in lab automation
Applies about 34 N of usable force at 0.5 MPa to press microplate seals, fitting the tight deck space thanks to the short ISO 21287 body.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X20-10B the Right Cylinder?
The 20 mm stroke with a 10 mm adjustment window covers 10-20 mm of extend travel, and the male rod thread (B) mates directly with I or Y rod knuckles. Remember the stop screw is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts. FA flange or LB foot mounting bolts to the ISO 21287 face, and order the -S code if you will need CMSE / DMSE position 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 ACEJ12X20-10B FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa it pushes 79.2 N and pulls 59.4 N; theoretical maximum is 11.5 kgf at 1.0 MPa. It is double acting with a 12 mm bore, 20 mm stroke adjustable down to 10 mm, M5x08 ports (M5x0.8), 0.15-1.0 MPa (22-145 psi) operating pressure, 1.5 MPa (215 psi) proof pressure, -20 to +70 C temperature range, and 30-500 mm/s speed.
An external stop screw shortens the 20 mm extend stroke by up to 10 mm, so the working range is 10-20 mm; it is an end stop only and never holds a load on air loss. Switches are possible only with the optional -S magnet code, which allows CMSE / DMSE reed or solid-state switches on the magnet slots; without -S there is no magnet. The fixed TPU bumper at both ends absorbs end-of-stroke energy, and FA flange or LB foot brackets bolt straight to the ISO 21287 face.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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