Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-30SB
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ12X40-30SB is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 40mm 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
- Stroke40 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 ACEJ12X40-30SB
The ACEJ12X40-30SB is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 40 mm stroke by up to 30 mm, giving a usable range of 10-40 mm on site. The male (B) rod thread and fitted -S magnet for CMSE / DMSE switches make it easy to wire into small automation cells.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits slim fixtures where a full-length cylinder will not. A hard-anodized aluminium body with an S45C hard-chrome plated 6 mm rod resists wear, and fixed TPU bumpers absorb end-of-stroke shock at both ends. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, air filtered to 40 um.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-30SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-30SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 40 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 ACEJ12X40-30SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 (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 ACEJ12X40-30SB Is Used
Micro clamping on electronics assemblies
About 34 N of usable holding force secures PCBs and small housings during screwdriving or test, with the short body fitting inside slim guarding.
Position-verified slide actuation
With the fitted -S magnet, CMSE / DMSE switches confirm extend and retract on a 40 mm slide in compact lab or packaging devices.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-30SB the Right Cylinder?
Plan real work at about 34 N, and note the stop screw is an end stop only - it does not hold a load if air is lost. FA flange or LB foot mountings and I/Y rod knuckles bolt to the ISO 21287 face; the fitted -S magnet accepts CMSE / DMSE switches for end-position sensing. Port is M5x0.8 and the rod end is male thread (B code).
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 ACEJ12X40-30SB FAQ
Theoretical maximum is 11.5 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke (30 mm window on a 40 mm stroke, so 10-40 mm usable), running on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), 30-500 mm/s, -20 to +70 C, with an M5x08 port written correctly as M5x0.8 and a male rod thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it suits tight jigs and gantries. Fixed TPU bumpers at both ends absorb end-of-stroke impact. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be clipped into the body slots; FA flange and LB foot mountings plus I/Y rod knuckles bolt straight to the ISO 21287 face.
Authorized Export Seller
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.
Request a Quote for Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X40-30SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.