Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-10B
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ16X40-10B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm bore and 40mm 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
- Stroke40 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 ACEJ16X40-10B
The ACEJ16X40-10B is a double acting compact cylinder built to ISO 21287, with a 16 mm bore, a 40 mm stroke and a male-threaded rod end (the B code). An external stop screw trims the extend stroke on site by up to 10 mm, so the usable extend range is 30-40 mm without changing hardware. 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 maximum of 20.5 kgf at 1.0 MPa.
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 where a full-length body will not fit. Air supply is 0.15-1.0 MPa (22-145 psi), speed runs 30-500 mm/s, and a fixed TPU bumper sits at both ends. Note that this unit has no magnet fitted; the optional -S code adds one for CMSE / DMSE switches.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-10B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-10B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 40 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 ACEJ16X40-10B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -10 | 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 ACEJ16X40-10B Is Used
Indexing pin on a rotary dial
The 10 mm trim window lets a technician fine-tune pin engagement depth on a 16-station assembly dial after fixture changes.
Sample press in a lab fixture
Roughly 6 kg of vertical lift capacity with margin suits light pressing of vials or test coupons in compact lab rigs.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X40-10B the Right Cylinder?
The stop screw is a mechanical end stop for the extend stroke only, not a mid-stroke lock, so the rod still drifts if air is lost. FA flange and LB foot mounts plus I/Y rod knuckles bolt to the standard ISO 21287 face, and the male rod thread suits couplings that clamp externally.
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 ACEJ16X40-10B FAQ
Push is 100.5 N and pull 75.4 N at 0.5 MPa; at 0.7 MPa push is 140.7 N and pull 105.6 N, with a theoretical maximum of 20.5 kgf at 1.0 MPa. The 16 mm bore takes an M5x0.8 port (PT), the rod is 8 mm with a male thread, operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and temperature -20 to +70 C.
An external stop screw shortens the 40 mm extend stroke by up to 10 mm, giving a 30-40 mm usable range; it is an end stop, not a load-holding brake. The hard-anodized aluminium body with S45C hard-chrome rod accepts FA flange and LB foot mounts plus I/Y knuckles, and a fixed TPU bumper decelerates at both ends. Sensors need the optional -S magnet code, which enables CMSE / DMSE switches.
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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.
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Most inquiries answered within 7-8 hours.
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