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AirTAC ACE Series · ISO 21287 Compact Cylinder

Airtac ACE Compact Cylinder ACE25X5

The AirTAC Airtac ACE Compact Cylinder ACE25X5 is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 5mm stroke, M5×0.8 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.

  • BoreØ25 mm
  • Stroke5 mm
  • Port sizeM5×0.8
  • Acting typeDouble acting
  • Rod threadM6×1.0
  • CushionFixed TPU bumper (both ends)
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About the Airtac ACE Compact Cylinder ACE25X5

This AirTAC ACE25X5 is a double acting compact cylinder with a 25 mm bore and a 5 mm stroke, delivering 245.4 N of push force at 0.5 MPa. Its short ISO 21287 body takes up about half the mounting length of an ISO 15552 profile cylinder, making it a fit for tight spaces. The hard-anodized aluminium body and S45C hard-chrome rod resist wear in continuous cycling.

For a 2:1 safety margin, plan to lift about 12.5 kg vertically with this unit at 0.5 MPa, based on its 245.4 N push. The fixed TPU bumper at both ends absorbs end-of-stroke impact, but it does not hold a load if air pressure is lost. This model has no magnet, so CMSE or DMSE sensors cannot be used unless you order the optional -S version.

Airtac ACE Compact Cylinder ACE25X5 Technical Specifications

ModelAirtac ACE Compact Cylinder ACE25X5
SeriesACE compact cylinder
StandardISO 21287
Bore sizeØ25 mm
Stroke5 mm
Acting typeDouble acting
Port sizeM5×0.8
Rod threadM6×1.0
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 150 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 (Ø25mm)

PressurePush forcePull force
0.5 MPa245 N206 N
0.7 MPa344 N289 N
Max (@1.0 MPa)50 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 ACE25X5

ACEISO 21287 compact cylinder (double-acting).
25Bore size in mm.
×5Stroke 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 ACE25X5 Is Used

precision_manufacturing

Tight Jig Clamping

Use the ACE25X5 to clamp small workpieces in a CNC fixture where the short body fits under a guard, applying 245.4 N to hold parts during drilling.

packaging

Label Applicator Press

Drive a label applicator head in a packaging line with a 5 mm stroke to press labels onto cartons, cycling at up to 500 mm/s for quick production.

engineering

Valve Actuation

Actuate a small pneumatic valve or limit switch in an automated assembly cell, using the compact size to fit within a control cabinet.

Is the Airtac ACE Compact Cylinder ACE25X5 the Right Cylinder?

For a lighter load, consider the ACE20X5 with 157.1 N push at 0.5 MPa, or step up to the ACE32X5 for 402.1 N push. The 5 mm stroke suits short indexing or clamping tasks where space is minimal. This unit has a female M6x1.0 rod thread and an M5x0.8 port, and it operates on filtered air from 0.15-1.0 MPa (22-145 psi). If you need position sensing, order the ACE25X5S to get the optional magnet for CMSE or DMSE switches.

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 ACE25X5 FAQ

At 0.5 MPa, the push force is 245.4 N and the pull force is 206.2 N. At 0.7 MPa, push is 343.6 N and pull is 288.6 N. The theoretical maximum force is 50.1 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa (22-145 psi), with a proof pressure of 1.5 MPa (215 psi).

The ACE25X5 has a short body that saves about 50% of the mounting length compared to an ISO 15552 profile cylinder, so it fits in tight jigs and guards. It has a fixed TPU bumper at both ends to absorb impact, but it does not provide adjustable cushioning or load holding. The body is hard-anodized aluminium with an S45C hard-chrome rod for durability.

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