Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30B
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm 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.
- BoreØ16 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM4×0.7
- 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 ACEJ16X40-30B
The ACEJ16X40-30B is a double acting AirTAC compact cylinder built to ISO 21287, with a 16 mm bore, 40 mm stroke and a male-threaded rod end (the B code). An external stop screw trims the extend stroke anywhere inside the ordered 30 mm window, giving a usable range of 10-40 mm without swapping the cylinder. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those figures rise to 140.7 N and 105.6 N. Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight fixtures where a full-length body cannot.
The hard-anodized aluminium body carries a hard-chrome-plated S45C rod, fixed TPU bumpers absorb end-of-stroke energy at both ends, and the M5x0.8 ports suit small air lines. Note: this unit has no magnet fitted, so position switches cannot be mounted unless you order the optional -S version, which accepts CMSE / DMSE switches.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 75 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 (Ø16mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 75 N |
| 0.7 MPa | 106 N |
| Max (@1.0 MPa) | 15 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 ACEJ16X40-30B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | 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 ACEJ16X40-30B Is Used
Product divert gates on packaging lines
Pushing chocolate boxes or blister packs sideways off a 200 mm conveyor needs about 60 N of usable force at 0.5 MPa - well inside this bore's rating - while the short body mounts under low guards.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-30B the Right Cylinder?
The stop screw is a mechanical end stop only: it sets the extend stroke but does not lock the piston, so on air loss the rod still drifts and an external brake is needed for load holding. Mounting brackets (FA flange, LB foot, FTC) and I/Y rod knuckles bolt to the ISO 21287 face; the male rod thread suits couplings that need a stud. If you need position feedback, order the -S code instead, since this model carries no magnet.
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 ACEJ16X40-30B FAQ
The bore is 16 mm, the ordered stroke is 40 mm, and the -30 code gives a 30 mm adjustment window, so the extend stroke can be set anywhere from 10 to 40 mm with the external stop screw. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the port is M5x0.8. The maximum standard stroke for this bore is 75 mm.
It is an ISO 21287 compact cylinder: hard-anodized aluminium body with an 8 mm hard-chrome-plated S45C rod, threaded aluminium covers, and fixed TPU bumpers at both ends that absorb end-of-stroke energy. The body saves about 50% of the mounting length of an ISO 15552 profile cylinder. FA flange, LB foot and FTC brackets plus I/Y rod knuckles bolt to the standard face. Sensors require the optional -S magnet code - this model (no S) has no magnet, so CMSE / DMSE switches cannot be fitted unless you order that version.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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