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AirTAC ACED Series · ISO 21287 Compact Cylinder

Airtac ACED Double-acting Compact Cylinder ACED50X55S

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.

  • BoreØ50 mm
  • Stroke55 mm
  • Port size1/8"
  • Acting typeDouble acting, double rod
  • Rod threadM10×1.5
  • CushionFixed TPU bumper (both ends)
$63.25 $71.20Save 11% Standard model — ready in 3-5 business days to process and dispatch
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About the Airtac ACED Double-acting Compact Cylinder ACED50X55S

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.

Airtac ACED Double-acting Compact Cylinder ACED50X55S Technical Specifications

ModelAirtac ACED Double-acting Compact Cylinder ACED50X55S
SeriesACED compact cylinder
StandardISO 21287
Bore sizeØ50 mm
Stroke55 mm
Acting typeDouble acting, double rod
Port size1/8"
Rod threadM10×1.5
FluidAir (filtered by 40µm element)
Operating pressure0.15 – 1.0 MPa
Proof pressure1.5 MPa
Temperature-20 to +70 °C
Speed range30 – 500 mm/s
CushionFixed TPU bumper (both ends)
Max standard strokeUp 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.

Theoretical Output Force (Ø50mm)

PressureForce (both ways)
0.5 MPa881 N
0.7 MPa1234 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).

Model Code: Airtac ACED Double-acting Compact Cylinder ACED50X55S

ACEDISO 21287 compact cylinder (double-rod).
50Bore size in mm.
×55Stroke length in mm.
SOptional built-in magnet for CMSE / DMSE sensors (omit for no magnet).
BRod 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.

Where the Airtac ACED Double-acting Compact Cylinder ACED50X55S Is Used

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Fixture clamping on machining centres

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.

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Pusher arms on packaging lines

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.

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Lift-and-present stations in assembly cells

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.

Is the Airtac ACED Double-acting Compact Cylinder ACED50X55S the Right Cylinder?

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

  • ✓ Required force at your working pressure
  • ✓ Short stroke fits the compact body
  • ✓ Port/thread type (PT / G)
  • ✓ Add -S if you need the magnet for sensors
  • ✓ Rod type (female / male B) & mount (FA/LB/CA)
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Installation & Maintenance Notes

  • check Use clean air filtered to 40µm or finer.
  • check Keep within 0.15 – 1.0 MPa operating pressure.
  • check Compact body: keep the stroke short and avoid side load on the rod.
  • check Do not dismantle the threaded front/back covers.
  • check Keep speed within the rated range; the TPU bumper absorbs stroke-end energy.
  • check Installation by qualified personnel per AirTAC docs.

Airtac ACED Double-acting Compact Cylinder ACED50X55S FAQ

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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