
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X275-40 is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø80mm bore and 275mm 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.
A double acting ISO 21287 compact cylinder with an adjustable extend stroke, the ACEJ80X275-40 pairs an 80 mm bore with a 275 mm stroke and a 40 mm adjustment window. At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N, rising to 3518.6 N at 0.7 MPa, with a theoretical peak of 512.6 kgf at 1.0 MPa. The external stop screw trims the extend stroke on site anywhere in the 235-275 mm range, so one cylinder can be dialled to several fixture positions without reordering.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters on wide gantries and press frames where every millimetre of envelope counts. The hard-anodized aluminium body carries an S45C hard-chrome plated 20 mm rod, fixed TPU bumpers absorb end-of-stroke energy, and FA flange or LB foot mounts bolt straight to the ISO 21287 face.
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X275-40 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø80 mm |
| Stroke | 275 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. |
| ×275 | 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 (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.
Clamps steel tube assemblies in automotive weld jigs, with the stop screw trimmed so the 275 mm stroke lands exactly on the jig without re-machining stops.
Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the rod will still drift if air is lost. Specify the optional -S code if you later want CMSE or DMSE switches; this model has no magnet fitted. Rod end is female M12x1.75 with a 1/8" PT port, and LB foot or FA flange mounting suits fixed machine frames.
Quick checklist
At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N; at 0.7 MPa push is 3518.6 N and pull 3298.7 N, with a theoretical maximum of 512.6 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 275 mm extend stroke by up to 40 mm, giving a usable range of 235-275 mm. It is a mechanical end stop only, not a load-holding brake, and the fixed TPU bumpers simply decelerate the piston at each end.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits tight machine frames. Magnet slots run along the hard-anodized aluminium body, but this model has no magnet fitted; order the optional -S version to enable CMSE or DMSE switches. Mounting options include FA flange and LB foot, with I and Y rod knuckles available, and the 1/8" PT port suits standard air preparation at 0.15-1.0 MPa (22-145 psi).
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