
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-30B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø80mm bore and 40mm 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 ACEJ80X40-30B pairs an 80 mm bore with a 40 mm stroke and a male-threaded 20 mm rod (the B code). At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N, rising to 3518.6 N on the extend stroke at 0.7 MPa, with a theoretical peak of 512.6 kgf at 1.0 MPa. The -30 code means an external stop screw trims the extend stroke anywhere in a 30 mm window, giving a usable range of 10-40 mm without changing hardware.
The hard-anodized aluminium body with an S45C hard-chrome rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into presses and fixtures too tight for a full-length body. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and fixed TPU bumpers absorb end-of-stroke shock at both ends.
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X40-30B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø80 mm |
| Stroke | 40 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. |
| ×40 | Stroke length in mm. |
| -30 | 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 3518.6 N extend force at 0.7 MPa suits a benchtop crimping or staking press where the 10-40 mm trimmed range replaces a full-length cylinder in a tight frame.
Clamps aluminium gearbox housings on a CNC fixture; the compact body fits inside the guard and the stop screw sets exact clamp travel per part.
Note the stop screw is a mechanical end stop only - on air loss the piston still drifts, so add a separate locking solution if position must be held. FA flange or LB foot mounts bolt to the ISO 21287 face, and if you need switch feedback, order the -S variant, since this unit carries no magnet and accepts no CMSE / DMSE sensor.
Quick checklist
Push is 2513.3 N and pull 2356.2 N at 0.5 MPa; at 0.7 MPa push reaches 3518.6 N, with a theoretical maximum of 512.6 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke: the -30 stop screw trims the 40 mm stroke within a 30 mm window (usable 10-40 mm). Ports are 1/8" (PT), operating pressure 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, temperature -20 to +70 C, and the rod is a male-threaded 20 mm S45C hard-chrome shaft.
An external stop screw shortens the extend stroke on site anywhere within the ordered 30 mm window - it cannot lengthen the stroke past 40 mm. The fixed TPU bumpers at both ends only soften end-of-stroke impact; they never lock or hold a load. This unit has no magnet, so no CMSE / DMSE switch can be mounted; if you need position feedback, order the -S version with the optional magnet.
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