Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X45-20
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X45-20 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm 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.
- BoreØ16 mm
- Stroke45 mm
- Port sizeM5×0.8
- Acting typeDouble acting, 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 ACEJ16X45-20
This is a double acting AirTAC ACEJ compact cylinder built to ISO 21287, with a 16 mm bore and a 45 mm stroke that an external stop screw trims by up to 20 mm on site, giving a usable extend range of 25-45 mm. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N, rising to 140.7 N at 0.7 MPa, with a theoretical peak of 20.5 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 tight fixtures a full-length body cannot reach.
Because the 100.5 N push converts to roughly 10 kg of force, plan on about 6 kg of real work at 0.5 MPa, or lift about 5 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome plated rod, a fixed TPU bumper at each end absorbs end-of-stroke shock, and the female M4x0.7 rod thread accepts standard knuckles. Note that the stop screw is a mechanical end stop only: on air loss the piston drifts, so it never holds a load. The magnet is the optional -S code; this unit has none, so CMSE / DMSE switches cannot be fitted unless -S is ordered.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X45-20 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X45-20 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 45 mm |
| Acting type | Double acting, 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 75 N |
| 0.7 MPa | 141 N | 106 N |
| Max (@1.0 MPa) | 21 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 ACEJ16X45-20
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×45 | Stroke length in mm. |
| -20 | 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 ACEJ16X45-20 Is Used
Small-part ejection from jigs
Trims to 30 mm to nudge machined aluminium fittings off a locating pin, using about 60 N of the 100.5 N push at 0.5 MPa.
Bench-top press for connector crimps
The 25-45 mm adjustable range lets one cylinder serve shallow and deep crimp dies on a compact electronics assembly bench.
Product stop on a narrow conveyor
The short body fits under guarding where an ISO 15552 profile cylinder is too long, stopping cartons up to about 5 kg lifted equivalent.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X45-20 the Right Cylinder?
Size both ways before committing: the 12 mm bore gives 56.5 N push at 0.5 MPa if your load is lighter, while the 20 mm bore delivers 157.1 N if you need more headroom. Keep the working load near 60 N (about 0.6 of the 100.5 N push) for a comfortable margin. The 45 mm stroke sits well inside the 75 mm maximum standard stroke for bore 16. FA flange and LB foot mountings bolt to the ISO 21287 face, and I or Y rod knuckles suit the M4x0.7 female thread. If position feedback matters later, order the -S variant so CMSE / DMSE switches can be added.
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 ACEJ16X45-20 FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa, 140.7 N push and 105.6 N pull; theoretical maximum 20.5 kgf at 1.0 MPa. It is double acting with a 45 mm stroke adjustable down to 25 mm via the -20 stop screw, running on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, with a fixed TPU bumper at both ends and an M5x0.8 port.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA flange or LB foot plates bolt straight to its face. Sensors need the optional -S magnet code: with -S, CMSE / DMSE switches read position along the body slots; without it there is no magnet, so no switch will detect the piston.
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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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