
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED40X55B 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 ACED40X55B is a double acting, double-rod compact cylinder built to the ISO 21287 short-body format. A 12 mm hard-chrome-plated S45C rod exits BOTH covers, so thrust is identical on every stroke: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa, using the rod-side area on both sides. The male rod thread (B code) bolts straight to your tooling, and the fixed TPU bumper at each end absorbs end-of-stroke shock.
Because the body is about 50% shorter than an ISO 15552 profile cylinder, this 40 mm bore drops into tight jigs, guarding and gantries where a full-length body will not fit. The through-rod resists rotation and side load, and the rear rod can carry a sensor flag. Plan on roughly 343 N (about 35 kg of push) for real work at 0.5 MPa, or size vertical lifts to about 29 kg with a 2:1 margin. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and the optional -S magnet enables CMSE / DMSE switches.
| Model | Airtac ACED Double-acting Compact Cylinder ACED40X55B |
|---|---|
| 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.
The through-rod lets a fixture clamp from both sides of a machined aluminium bracket with equal 571.8 N force, one cylinder instead of two.
Equal force in both directions makes the 55 mm stroke ideal for diverting cartons on a food packaging line, with the TPU bumper quieting each reversal at 30-500 mm/s.
Mount a flag on the rear rod of the ACED40X55B and read position with CMSE / DMSE switches when the optional -S magnet is ordered - no extra probe needed in a short gantry.
At 571.8 N @0.5 MPa this 40 mm bore sits between the 32 mm (345.6 N) and 50 mm (881.2 N) double-rod classes - step down for lighter clamping, up for heavier pressing. The 55 mm stroke is well inside the 200 mm standard range for bore 40. Remember the piston drifts when air is lost; add a rod lock or pilot check if the load must be held. FA/FB flange, LB foot and FTC brackets plus I/Y rod knuckles mount on the ISO 21287 face, and the male rod thread suits direct tooling attachment.
Quick checklist
Because a rod exits both covers, force is EQUAL in both directions: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa, with a maximum of 116.6 kgf at 1.0 MPa. Both strokes use the rod-side area, so there is no push-versus-pull difference. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), 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, so the 40 mm bore fits shallow slides and guarded stations. The B code gives a male rod thread for direct tooling bolts, FA/FB flange, LB foot and FTC brackets bolt to the standard face, and a fixed TPU bumper sits at each end. Position sensing needs the optional -S magnet ordered with CMSE / DMSE switches.
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