
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED40X55S is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø40mm bore and 55mm 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 ACED40X55S is a double acting compact cylinder built to ISO 21287 with a piston rod leaving BOTH covers, so thrust is identical on each stroke - 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa in either direction. Its hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, letting the 55 mm stroke slot into tight jigs and guarding where a full-length body will not fit.
The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the body for end-position sensing. A 12 mm S45C hard-chrome rod on each end resists rotation and carries side load, and the rear rod doubles as a sensor-flag mount. Running on 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s, it lifts roughly 29 kg vertically with a 2:1 margin (571.8 N / 9.81 halved), and fixed TPU bumpers absorb end-of-stroke shock at both covers.
| Model | Airtac ACED Double-acting Compact Cylinder ACED40X55S |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 55 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 200 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 | 572 N |
| 0.7 MPa | 800 N |
| Max (@1.0 MPa) | 117 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
| ACED | ISO 21287 compact cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×55 | Stroke length in mm. |
| 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 (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.
Equal 571.8 N force on both strokes lets one cylinder press a bracket into a nest on the forward stroke and eject it on the return, with the 55 mm stroke matching a shallow fixture plate.
The fitted -S magnet drives CMSE switches at both ends, so a packaging-line pusher reports home and extended positions while the through-rod keeps the pusher bar square to the belt.
With about 29 kg of vertical lift capacity at a 2:1 margin, the back-end rod balances the tool plate and the compact body keeps the gantry head short.
At 571.8 N per side, bore 40 sits between bore 32 (345.6 N) and bore 50 (881.2 N) at 0.5 MPa - choose 32 for lighter clamping, 50 when the tooling needs nearly double the thrust. The 55 mm stroke is well inside the 200 mm maximum standard stroke for this bore, so it ships as a catalogue item. Plan on about 343 N (roughly 35 kg of push) as the usable working force at 0.5 MPa rather than the full rating. FA/FB flange, LB foot and FTC brackets bolt to the ISO 21287 face, and the female M8x1.25 rod thread accepts standard I or Y knuckles; note that a plain cylinder drifts when air is lost, so add a rod lock or pilot check if the load must be held.
Quick checklist
Yes - because a rod exits both covers, both strokes work on the rod-side area, so force is equal each way: 571.8 N at 0.5 MPa, 800.5 N at 0.7 MPa, and up to 116.6 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, speed 30-500 mm/s, air filtered to 40 um.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA/FB flange, LB foot or FTC brackets bolt straight to its face. This unit carries the optional -S magnet, so CMSE or DMSE switches mount in the body slots for end-of-stroke detection; fixed TPU bumpers at both covers absorb the piston's arrival.
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