Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-40S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-40S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm bore and 50mm 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
- Stroke50 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 ACEJ16X50-40S
A double acting ISO 21287 compact cylinder, the ACEJ16X50-40S pairs a 16 mm bore with a 50 mm stroke and a 40 mm adjustment window: an external stop screw trims the extend stroke anywhere from 10 to 50 mm on site. 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 ceiling 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.
The hard-anodized aluminium body carries a roller-burnished bore, and the S45C hard-chrome plated rod ends in a female M4x0.7 thread. A fixed TPU bumper at each end absorbs end-of-stroke energy, and the -S magnet this model carries lets CMSE / DMSE reed or solid-state switches report position. A practical sizing rule: at 0.5 MPa, plan on roughly 60 N of usable push, which is about 6 kg of vertical lift with a 2:1 margin.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-40S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-40S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 50 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 ACEJ16X50-40S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -40 | 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 ACEJ16X50-40S Is Used
Small-part ejection from plastic molds
The 10-50 mm adjustable extend stroke lets one cylinder serve several mold sizes, and 100.5 N push at 0.5 MPa clears lightweight ejected parts reliably.
Position-verified gate on a lab feeder
With the fitted -S magnet, CMSE or DMSE switches confirm gate open and closed, while the compact body fits the narrow frame of a benchtop feeding unit.
Light press-fit of electronic connectors
About 6 kg of practical vertical push at 0.5 MPa suits seating small connectors and pins where heavier 20 mm or 25 mm bores would over-force the part.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X50-40S the Right Cylinder?
For light clamping and positioning, this 16 mm bore sits between the 12 mm bore (56.5 N push at 0.5 MPa) and the 20 mm bore (157.1 N push at 0.5 MPa); step up if your load needs more than about 60 N of working force. The 40 mm window means one cylinder covers strokes from 10 to 50 mm, useful when product sizes change on a line. Remember the stop screw is a mechanical end stop only: on air loss the piston still drifts, so it is not a load-holding lock. FA flange or LB foot mounts bolt to the ISO 21287 face, and PT ports take standard M5x0.8 fittings.
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 ACEJ16X50-40S 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 is 20.5 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 50 mm extend stroke by up to 40 mm, giving a usable range of 10-50 mm. It is a mechanical end stop, not a mid-stroke lock, so the rod can still drift if air is lost.
It is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder. The hard-anodized aluminium body has fixed TPU bumpers at both ends, FA flange and LB foot mounts bolt to the standard face, and this -S version carries the magnet so CMSE / DMSE reed or solid-state switches can be clamped in the body slots. Air supply is 0.15-1.0 MPa (22-145 psi) filtered to 40 um, speed 30-500 mm/s, temperature -20 to +70 C.
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 ACEJ16X50-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.