Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50S is a genuine double acting, 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, 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 ACEJ16X70-50S
The ACEJ16X70-50S is a double acting ISO 21287 compact cylinder with a 16 mm bore and a 70 mm stroke that an external stop screw trims on site within the ordered 50 mm window, giving a usable extend range of 20-70 mm. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N, rising to 140.7 N push at 0.7 MPa, with a theoretical maximum of 20.5 kgf at 1.0 MPa. In practice plan on roughly 60 N of real work at 0.5 MPa, which is about 6 kg of horizontal load or around 5 kg lifted vertically with a 2:1 margin.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures where a full-length body will not fit. A hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers absorb end-of-stroke energy at both ends, and because this model carries the -S magnet, CMSE or DMSE reed and solid-state switches can be mounted anywhere along the body slots.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 70 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 ACEJ16X70-50S
| 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 (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 ACEJ16X70-50S Is Used
Small electronics fixture clamping
Trim the 70 mm stroke down to 20-50 mm with the stop screw to clamp PCB carriers or connector housings with about 60 N of usable force at 0.5 MPa.
Position-verified ejector on assembly lines
The fitted -S magnet accepts CMSE or DMSE switches, so a PLC can confirm full extend before the next station indexes a 5 kg-class part.
Compact gate or slider actuation
The short body, roughly half the mounting length of an ISO 15552 profile cylinder, drives light guards and sliding trays in machines where space is tight.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-50S the Right Cylinder?
At 100.5 N push and 75.4 N pull at 0.5 MPa, the 16 mm bore suits light clamping and small-part transfer; step down to the 12 mm bore (56.5 N push) for tighter loads or up to the 20 mm bore (157.1 N push) when force margins matter. The 70 mm stroke sits inside the 75 mm maximum standard stroke for this bore, so no made-to-order build is needed. The 50 mm adjustment window means one cylinder can serve several jig positions, and FA flange or LB foot mounts bolt to the standard ISO 21287 face. Note the stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the piston can still drift if air is lost.
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 ACEJ16X70-50S FAQ
This 16 mm bore model pushes 100.5 N and pulls 75.4 N at 0.5 MPa, and 140.7 N / 105.6 N at 0.7 MPa, with a theoretical maximum of 20.5 kgf at 1.0 MPa. It runs double acting 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 70 mm stroke adjustable down to 20 mm via the 50 mm stop-screw window and an M5x0.8 port.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome rod and fixed TPU bumpers at both ends. This model carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches mount directly in the body slots; FA flange and LB foot brackets bolt to the standard face.
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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.
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