
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED50X55S is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø50mm 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 ACED50X55S is a double acting, double-rod compact cylinder built to ISO 21287: a piston rod exits both covers of the hard-anodized aluminium body, so the 50 mm bore delivers an identical 881.2 N at 0.5 MPa (1233.7 N at 0.7 MPa) on every stroke, whichever cover it pushes from. The 16 mm S45C hard-chrome rod resists rotation and side load, and the symmetric through-rod lets the rear end carry a sensor flag or a second tooling plate. The S in the code means the optional -S magnet is fitted, so CMSE / DMSE reed or solid-state switches can be clipped onto the body slots right away.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why this 55 mm stroke version slots into tight fixtures, guarding and gantry frames. A fixed TPU bumper at each end absorbs end-of-stroke shock, and the roller-burnished bore with grease-retaining two-way piston seal keeps friction low across the 30-500 mm/s speed range. At 0.5 MPa the rod-side area works out to roughly 90 kgf, so halving for a 2:1 margin means this cylinder lifts about 45 kg vertically; plan on around 530 N (about 54 kgf) of real work force for a comfortable service margin.
| Model | Airtac ACED Double-acting Compact Cylinder ACED50X55S |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø50 mm |
| Stroke | 55 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 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 | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 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). |
|---|---|
| 50 | 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 881.2 N clamping from either rod end lets one ACED50X55S clamp a workpiece while the rear rod drives a support rest inside a compact jig, with the 55 mm stroke clearing chip shields.
The through-rod resists the side load of a pusher plate nudging cartons across a conveyor, and the fitted -S magnet feeds CMSE switch signals for reject-gate timing at up to 500 mm/s.
With about 45 kg of vertical lift at a 2:1 margin, the ACED50X55S raises palletized subassemblies to a robot pick height, the rear rod doubling as a mount for a position flag read by a DMSE sensor.
Size both ways: if 881.2 N at 0.5 MPa is more than the job needs, the ACED40X55S gives 571.8 N in the same compact envelope; if the load is heavier, step up to the ACED63X55S for 1458.1 N. Remember that a plain double-rod cylinder drifts when air is lost, so pair it with a rod lock or pilot check valve for a held load. The female M10x1.5 rod thread and 1/8" PT ports suit standard fittings, and FA/FB flange, LB foot or FTC brackets bolt straight to the ISO 21287 face; the fitted -S magnet means CMSE / DMSE switches work without reordering.
Quick checklist
Yes - it is a double-rod cylinder, so a 16 mm rod exits both covers and both strokes use the rod-side area. At 0.5 MPa it delivers 881.2 N, at 0.7 MPa it delivers 1233.7 N, and the maximum output at 1.0 MPa is 179.7 kgf, identical pushing or pulling. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof rating, speed 30-500 mm/s, and the 55 mm stroke sits well inside the 250 mm maximum standard stroke for the 50 mm bore.
The S means the optional -S magnet is fitted on this model, so CMSE / DMSE reed or solid-state switches mount directly in the body slots for end-of-stroke or mid-position sensing. Mechanically it is an ISO 21287 compact cylinder: hard-anodized aluminium body with threaded aluminium covers, a hard-chrome plated S45C rod, and a fixed TPU bumper at each end that decelerates the piston. The 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 the standard face.
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