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AirTAC ACE Series · ISO 21287 Compact Cylinder

Airtac ACE Compact Cylinder ACE50X25S

The AirTAC Airtac ACE Compact Cylinder ACE50X25S is a genuine double acting ISO 21287 compact air cylinder with a Ø50mm bore and 25mm 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
  • Stroke25 mm
  • Port size1/8"
  • Acting typeDouble acting
  • Rod threadM10×1.5
  • CushionFixed TPU bumper (both ends)
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About the Airtac ACE Compact Cylinder ACE50X25S

This AirTAC ACE50X25S is a double acting compact cylinder that extends and retracts its rod with air pressure, delivering a 981.7 N push and 881.2 N pull at 0.5 MPa. The 50 mm bore unit fits into tight spaces because its ISO 21287 body is about 50% shorter than an ISO 15552 profile cylinder, so it suits compact jigs and guarded machinery.

The optional -S magnet is already fitted on this model, letting you mount CMSE or DMSE reed or solid-state switches for position sensing. As a practical rule, plan for about 589 N of real work at 0.5 MPa, which lifts roughly 60 kg vertically with a 2:1 safety margin, so match it to actual part weights before you buy.

Airtac ACE Compact Cylinder ACE50X25S Technical Specifications

ModelAirtac ACE Compact Cylinder ACE50X25S
SeriesACE compact cylinder
StandardISO 21287
Bore sizeØ50 mm
Stroke25 mm
Acting typeDouble acting
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)

PressurePush forcePull force
0.5 MPa982 N881 N
0.7 MPa1374 N1234 N
Max (@1.0 MPa)200 kgf

Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.

Model Code: Airtac ACE Compact Cylinder ACE50X25S

ACEISO 21287 compact cylinder (double-acting).
50Bore size in mm.
×25Stroke 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 ACE Compact Cylinder ACE50X25S Is Used

precision_manufacturing

Fixture Clamping

Use this 50 mm bore cylinder to clamp a workpiece in a CNC milling vise, where the 981.7 N push at 0.5 MPa holds a steel bracket firmly during cutting.

conveyor_belt

Conveyor Stop Gate

Mount this compact unit on a packaging line to raise a stop gate that diverts cartons, with the 25 mm stroke providing quick, repeatable action at speeds up to 500 mm/s.

warehouse

Sorting Arm Pusher

In a warehouse sorting station, this cylinder pushes lightweight parcels off a belt onto a chute, using its 881.2 N pull at 0.5 MPa to retract the arm cleanly.

Is the Airtac ACE Compact Cylinder ACE50X25S the Right Cylinder?

For lighter duty, the ACE40X25 offers a 628.3 N push at 0.5 MPa, while the ACE63X25 steps up to 1558.6 N push at the same pressure, so size based on your load and speed needs. This ACE50X25S has a 1/8" port and a female M10x1.5 rod thread, and it accepts FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, or FTC brackets. Remember, the TPU bumper only softens end-of-stroke impact; it does not hold a load, so use a rod lock or pilot check valve if you need position holding when air is off.

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 ACE Compact Cylinder ACE50X25S FAQ

At 0.5 MPa, the push force is 981.7 N and the pull force is 881.2 N. At 0.7 MPa, push rises to 1374.4 N and pull to 1233.7 N. The theoretical maximum force is 200.2 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa (22-145 psi), and the speed range is 30-500 mm/s.

The short body saves about 50% of the mounting length compared to an ISO 15552 profile cylinder, which helps in tight spaces like guard enclosures or gantries. The fixed TPU bumper at both ends absorbs end-of-stroke energy, but it is not adjustable and does not lock the rod. The optional -S magnet is fitted here, so you can add CMSE or DMSE switches for position feedback.

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