
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-50B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø80mm bore and 300mm stroke, 1/8" 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 ACEJ80X300-50B is a double acting, adjustable-stroke compact cylinder built to ISO 21287. The hard-anodized aluminium body carries a hard-chromed S45C rod with a male thread (B code), and the 1/8" port matches this bore size. As a rough planning rule, keep real work to about 1508 N at 0.5 MPa, roughly 60% of the rated push.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters on long-stroke gantries and press frames where every millimetre of envelope counts. The -50 code adds an external stop screw that trims the extend stroke anywhere in a 50 mm window, giving a usable range of 250-300 mm on site. Fixed TPU bumpers absorb end-of-stroke shock at both ends, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). Note that the adjuster is a mechanical end stop only: on air loss the piston still drifts, so it is not a load-holding brake.
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-50B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø80 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M12×1.75 |
| 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 300 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 | 2356 N |
| 0.7 MPa | 3299 N |
| Max (@1.0 MPa) | 481 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). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -50 | 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.
The stop screw lets a integrator dial the extend stroke between 250 and 300 mm to match pallet heights on a lift-and-locate station, while the short body keeps the cylinder inside the frame.
On food and packaging line guard gates, the male threaded 20 mm rod with a Y knuckle drives swing clamps, and the 1/8" port keeps plumbing simple at 30-500 mm/s.
If you need the rod to stay put mid-stroke when air is lost, add an external locking unit - the -50 stop screw only shortens the extend stroke within its window. FA flange or LB foot mountings bolt to the ISO 21287 face, and I/Y rod knuckles suit the male threaded rod. If position feedback is needed later, order the -S variant so CMSE / DMSE switches can be fitted; this model without the S code has no magnet.
Quick checklist
Push is 2513.3 N and pull is 2356.2 N at 0.5 MPa; at 0.7 MPa push reaches 3518.6 N and pull 3298.7 N, with a theoretical maximum of 512.6 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke (50 mm window, so 250-300 mm usable), 1/8" ports, 20 mm male-threaded rod, speed 30-500 mm/s, operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), and -20 to +70 C.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits long-stroke machines with tight envelopes. Shock at each end of travel is taken by a fixed TPU bumper, which decelerates only and never locks a load. FA flange and LB foot mountings plus I/Y rod knuckles bolt straight on. Position sensing requires the optional -S magnet with CMSE or DMSE switches; this unit, ordered without S, carries no magnet.
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