Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-30B
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ16X70-30B 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 ACEJ16X70-30B
A double acting ISO 21287 compact cylinder with an adjustable extend stroke, the ACEJ16X70-30B pairs a 16 mm bore with a 70 mm stroke and a male-threaded 8 mm rod. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those rise to 140.7 N and 105.6 N, with a theoretical ceiling of 20.5 kgf at 1.0 MPa. An external stop screw trims the extend stroke anywhere within the ordered 30 mm window, giving a usable range of 40-70 mm without changing the air supply.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures and guarded cells. The hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers sit at both ends, and speed spans 30-500 mm/s. Note there is no magnet fitted; order the -S code if you later need CMSE / DMSE switch positions.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-30B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-30B |
|---|---|
| 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 ACEJ16X70-30B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×70 | 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 ACEJ16X70-30B Is Used
Small-part press fitting
Presses bearings or dowels into plastic housings on electronics assembly benches, where the 40-70 mm adjustable window lets one cylinder serve several housing depths.
Gate and chute diverting
Swings lightweight divert gates on packaging lines; the short body fits inside tight guarding, and the -S magnet option enables CMSE / DMSE position switches.
Lab fixture actuation
Drives probe or sample holders in test rigs, where the 30 mm trim range and 30-500 mm/s speed band cover both slow positioning and quick return strokes.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-30B the Right Cylinder?
The stop screw is a mechanical end stop for the extend stroke only - it does not lock the piston mid-stroke, so on air loss the rod can still drift; add a separate valve or lock for load holding. FA flange or LB foot mountings bolt to the ISO 21287 face, and the male rod thread (B code) takes standard rod accessories directly. If position sensing is planned, order the -S variant so CMSE / DMSE switches can be fitted.
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 ACEJ16X70-30B FAQ
The -30 code gives a 30 mm adjustment window, so the extend stroke can be trimmed from 70 mm down to 40 mm via the external stop screw. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, port M5x0.8, rod 8 mm male thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, ideal for slim jigs and guarded machines. Fixed TPU bumpers absorb end-of-stroke impact at both ends. Mounting options include FA flange and LB foot plus I/Y rod knuckles. Position sensing requires the optional -S magnet code; this model has no magnet fitted, so CMSE / DMSE switches cannot be mounted unless you order the -S version.
Authorized Export Seller
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.
Request a Quote for Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X70-30B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.