
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ100X300-40B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø100mm 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.
Its short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so heavy clamping and pressing stations fit inside guards and gantries that a full-length cylinder cannot enter. The -40 code adds a 40 mm adjustment window: an external stop screw trims the extend stroke anywhere between 260 and 300 mm on site.
The hard-anodized aluminium body carries a 20 mm S45C hard-chrome rod with a male thread (B code), and 1/8" ports feed air filtered to 40 um at 0.15-1.0 MPa (22-145 psi). Fixed TPU bumpers absorb end-of-stroke shock at both ends, speed spans 30-500 mm/s, and the optional -S magnet enables CMSE / DMSE switches - this unit ships without it.
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ100X300-40B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø100 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 | 3770 N |
| 0.7 MPa | 5278 N |
| Max (@1.0 MPa) | 769 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). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, sliding a 300 mm heavy slide gate in the tight space behind a guard panel.
The 40 mm window suits fixtures where the final stroke is tuned after installation - trim the 300 mm extend stroke down to 260 mm by turning the stop screw. Note the adjuster is a mechanical end stop only: on air loss the piston drifts, so it never holds a load mid-stroke. FA flange or LB foot mountings bolt to the ISO 21287 face, and if position feedback is needed later, order the -S variant so CMSE / DMSE switches can be fitted.
Quick checklist
At 0.5 MPa it pushes 3927 N and pulls 3769.9 N; at 0.7 MPa push is 5497.8 N and pull 5277.9 N; theoretical maximum is 800.9 kgf at 1.0 MPa. The -40 code gives a 40 mm adjustment window: an external stop screw shortens the 300 mm extend stroke to as little as 260 mm. It is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, 20 mm hard-chrome rod, male rod thread, 1/8" ports and fixed TPU bumpers at both ends. Sensing requires the optional -S magnet: this model has no magnet, so CMSE / DMSE switches cannot be mounted unless you order the -S code.
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