Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50B
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm bore and 70mm 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
- Stroke70 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 ACEJ16X70-50B
This double acting AirTAC ACEJ16X70-50B is an ISO 21287 compact cylinder with a 16 mm bore and a 70 mm stroke that an external stop screw can trim on site by up to 50 mm, giving a usable extend range of 20-70 mm. 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. The short hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures where a full-length body cannot.
The S45C rod carries a hard-chrome finish and ends in a male thread (the B code), and a fixed TPU bumper at each end absorbs end-of-stroke energy. Speed runs 30-500 mm/s across 0.15-1.0 MPa (22-145 psi) of clean, 40 um filtered air.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 70 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 ACEJ16X70-50B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -50 | 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 ACEJ16X70-50B Is Used
Pick-and-place gantries
Short-stroke lift of connectors or vials inside a compact gantry frame; the body is about 50% shorter than an ISO 15552 profile cylinder, and with the optional -S magnet a CMSE or DMSE switch confirms end positions.
Lab and test station actuation
Cycling a probe or sample clamp on a test rig at 30-500 mm/s, where the male rod thread (B code) takes a custom fixture stud and the M5x0.8 port keeps tubing runs tidy.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50B the Right Cylinder?
The 70 mm stroke sits under the 75 mm maximum standard stroke for this bore, so it ships as a catalogue item. Remember the stop screw is a mechanical end stop only: on air loss the piston drifts, so add a separate valve solution if you must hold position. If you need position sensing, order the optional -S magnet so CMSE / DMSE switches can be fitted; this B-code model has no magnet. FA flange or LB foot mounts bolt to the ISO 21287 face.
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 ACEJ16X70-50B FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa push is 140.7 N and pull 105.6 N; theoretical maximum is 20.5 kgf at 1.0 MPa. The 16 mm bore has an 8 mm rod, an M5x0.8 port and a 75 mm maximum standard stroke, so the 70 mm stroke is standard. It is double acting with an adjustable extend stroke: the -50 stop screw trims the 70 mm stroke down as far as 50 mm, giving a 20-70 mm range. 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.
The hard-anodized aluminium body with threaded aluminium covers is an ISO 21287 compact design that saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-chrome plated S45C rod and a fixed TPU bumper at each end that only decelerates at the ends of travel. This B version has a male rod thread. FA flange and LB foot mounts bolt straight to the ISO 21287 face. Position sensing requires the optional -S magnet code; without it no magnet is fitted, so CMSE or DMSE switches cannot be used.
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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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