
The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ16X25-10SB is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø16mm bore and 25mm 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.
The ACEJ16X25-10SB is a double acting AirTAC compact cylinder built to ISO 21287, with a 16 mm bore, 25 mm stroke and a male-threaded 8 mm rod. Its hard-anodized aluminium body and S45C hard-chrome plated rod resist wear in daily cycling, while fixed TPU bumpers absorb end-of-stroke shock at both ends.
The -10 code gives a 10 mm adjustment window: an external stop screw trims the extend stroke anywhere between 15 and 25 mm on site, so one cylinder serves several fixture positions. Because the short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight clamping nests and small gantries. As a rule of thumb, plan on roughly 60 N (about 6 kg of vertical lift) of usable work at 0.5 MPa rather than the full rating. The fitted -S magnet lets you add CMSE or DMSE switches for end-position sensing.
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ16X25-10SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø16 mm |
| Stroke | 25 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.
| 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).
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×25 | 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.
Trims the extend stroke between 15 and 25 mm to seat a 100.5 N clamp on electronics housings or plastic brackets without repositioning the fixture.
The short ISO 21287 body fits assembly modules where a full-length profile cylinder will not, pushing separators or pins with up to 140.7 N at 0.7 MPa.
With the fitted -S magnet, CMSE or DMSE switches confirm rod position on quality-check benches cycling at 30-500 mm/s.
Size this 16 mm bore when your load needs under about 100 N at 0.5 MPa. The 10 mm trim window suits fixtures where the exact extend position is tuned during commissioning. Note the stop screw is a mechanical end stop only - on air loss the piston can still drift, so it is not a load lock. FA flange or LB foot mounts bolt to the standard ISO 21287 face, and the male rod thread (B code) takes your own tooling directly.
Quick checklist
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa push is 140.7 N and pull 105.6 N; theoretical maximum is 20.5 kgf at 1.0 MPa. It is double acting with a 10 mm adjustable extend window (usable stroke 15-25 mm), runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, with an M5x0.8 port and a male-threaded 8 mm rod.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow fixtures and guarded cells. Fixed TPU bumpers at both ends absorb end-of-stroke impact but do not lock or hold a load. FA flange and LB foot mounts attach to the standard face, and this model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be clipped on for end-position signals.
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