Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30B is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 45mm 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
- Stroke45 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 ACEJ12X45-30B
The ACEJ12X45-30B is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. Its 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N push at 0.7 MPa, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The B code gives a male rod thread on the 6 mm rod, and the M5x0.8 ports suit small pneumatic panels. Running on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), it cycles at 30-500 mm/s.
The -30 code sets a 30 mm adjustment window: an external stop screw trims the 45 mm extend stroke on site, so the usable range is 15-45 mm. The short hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into slim fixtures and guarding. Plan on roughly 34 N of real work at 0.5 MPa, enough to lift about 2 kg vertically with a 2:1 margin. Note the stop screw sets the end position only - it does not lock the piston if air is lost.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 45 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 ACEJ12X45-30B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 12 | Bore size in mm. |
| ×45 | 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 ACEJ12X45-30B Is Used
Small-parts ejection
Ejects stamped terminals or plastic micro-parts from a die or nest, with the 15-45 mm adjustable range tuned to each die set.
Light snap-fit pressing
Presses battery covers or connector clips home on electronics assembly benches, using about 34 N of usable force at 0.5 MPa.
Compact test stations
Actuates a probe or limit lever inside tight test rigs where a full-length profile cylinder will not fit; add the -S magnet if switch feedback is needed.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X45-30B the Right Cylinder?
At 56.5 N push, this 12 mm bore covers light clamping and ejecting duty. Step down is not possible (12 mm is the smallest ACEJ bore); step up to the 16 mm bore for 100.5 N push at 0.5 MPa, or to 20 mm for 157.1 N. If you need position feedback, order the -S variant with the optional magnet for CMSE / DMSE switches - this model has no magnet. FA flange or LB foot mounts bolt to the ISO 21287 face, and the male rod thread suits external knuckles or tooling plates.
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 ACEJ12X45-30B FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push is 79.2 N. Theoretical maximum is 11.5 kgf at 1.0 MPa. The base stroke is 45 mm and the -30 window lets a stop screw trim the extend stroke down to 15 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, port M5x0.8, rod 6 mm with male thread.
It is an ISO 21287 compact cylinder: hard-anodized aluminium body, S45C hard-chrome-plated rod, threaded aluminium covers and a fixed TPU bumper at each end that only decelerates the piston at the ends of travel. The body is about 50% shorter in mounting length than an ISO 15552 profile cylinder. This version has no magnet, so no sensor can be fitted - order the -S code to enable CMSE / DMSE switches. FA flange and LB foot mounts, plus I and Y rod knuckles, bolt straight on.
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