Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X35-20B
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ16X35-20B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm bore and 35mm 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
- Stroke35 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 ACEJ16X35-20B
The ACEJ16X35-20B is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 35 mm stroke by up to 20 mm on site, giving a usable range of 15-35 mm without changing the cylinder. The B code gives a male rod thread on the 8 mm rod, and the PT ports are M5x0.8.
The hard-anodized aluminium body with an S45C hard-chrome-plated rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it drops into tight jigs and guarding where a full-length body will not fit. Fixed TPU bumpers absorb end-of-stroke energy, speed spans 30-500 mm/s, and the optional -S magnet enables CMSE / DMSE switches - this unit has no magnet fitted.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X35-20B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X35-20B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 35 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 ACEJ16X35-20B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×35 | 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 (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 ACEJ16X35-20B Is Used
Pick-and-place micro parts
With the -S magnet ordered, CMSE or DMSE switches confirm extend and retract on a compact gantry axis where a full-length ISO 15552 body would not fit.
Lab dosing and sample indexing
A 6 kg vertical-lift capability with margin suits light vial or slide indexing, and the male rod thread (B code) accepts custom tooling plates directly.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X35-20B the Right Cylinder?
Compare force classes before ordering: the 12 mm bore pushes only 56.5 N at 0.5 MPa, while the 20 mm bore reaches 157.1 N, so the 16 mm bore at 100.5 N sits between them for light loads. If your fixture needs a stroke shorter than 35 mm, order a larger -NN window; the stop screw only shortens the extend stroke, it never lengthens it. Note that the adjuster is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts, so add a separate holding valve for suspended loads. Mount via FA flange or LB foot, add the -S code if CMSE / DMSE switch feedback is needed.
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 ACEJ16X35-20B FAQ
Push is 100.5 N and pull is 75.4 N at 0.5 MPa; at 0.7 MPa push rises to 140.7 N and pull to 105.6 N. Theoretical maximum is 20.5 kgf at 1.0 MPa. The ordered stroke is 35 mm with a 20 mm adjustment window, so the extend stroke can be trimmed to any length from 15 to 35 mm via 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 (PT).
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. Position feedback requires the optional -S magnet code: only then can CMSE or DMSE switches be mounted on the body slots. This model (no S code) has no magnet, so no switch can be fitted. FA flange and LB foot mountings bolt to the standard ISO 21287 face.
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 ACEJ16X35-20B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.