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AirTAC ASE Series · ISO 21287 Compact Cylinder

Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B

The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B is a genuine single acting, push (spring return) ISO 21287 compact air cylinder with a Ø25mm bore and 25mm 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
  • Stroke25 mm
  • Port sizeM5×0.8
  • Acting typeSingle acting, push (spring return)
  • Rod threadM6×1.0
  • CushionFixed TPU bumper (both ends)
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About the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B

This is a single acting push cylinder: air extends the rod and an internal return spring retracts it, so only one air line is needed. The 25 mm bore delivers 210.1 N of push at 0.5 MPa (net of the spring) and 308.3 N at 0.7 MPa, with working pressure from 0.2 MPa (28-145 psi range) and speed of 50-500 mm/s. The male rod thread (B code) bolts straight to your linkage.

The ISO 21287 compact body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarded stations. A fixed TPU bumper absorbs end-of-stroke shock at both ends. For sizing, plan on roughly 126 N of usable work at 0.5 MPa, which lifts about 10 kg vertically with a 2:1 margin. Note there is no magnet fitted; order the -S code if you want CMSE / DMSE switch sensing.

Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B Technical Specifications

ModelAirtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B
SeriesASE compact cylinder
StandardISO 21287
Bore sizeØ25 mm
Stroke25 mm
Acting typeSingle acting, push (spring return)
Port sizeM5×0.8
Rod threadM6×1.0
FluidAir (filtered by 40µm element)
Operating pressure0.2 – 1.0 MPa
Proof pressure1.5 MPa
Temperature-20 to +70 °C
Speed range50 – 500 mm/s
CushionFixed TPU bumper (both ends)
Max standard strokeUp to 25 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 force (spring return)
0.5 MPa210.1 N
0.7 MPa308.3 N

Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa. Single-acting strokes are short (Ø12 to 10 mm, Ø16-100 to 25 mm).

Model Code: Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B

ASEISO 21287 compact cylinder (single-acting push, spring-return).
25Bore 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 ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B Is Used

compress

Bench clamp fixture

Springs a clamp arm onto a machined aluminium bracket; 210.1 N at 0.5 MPa holds light parts while the spring clears the workpiece on air-off.

packaging

Carton kick-off pusher

Nudges a small carton off a conveyor lane at a packing station; the 25 mm stroke matches the lane width and one solenoid valve runs it.

science

Sample vial ejector

Ejects filled vials from a lab filling nest; the spring-return design drops the rod clear when air is cut, protecting the next cycle.

Is the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B the Right Cylinder?

At 210.1 N push (0.5 MPa) this bore sits between the 20 mm (127.4 N) and 32 mm (352.5 N) single-acting sizes - step down for lighter clamps, up for heavier presses. The spring returns the rod home on air loss but will not hold a mid-stroke position. Choose FA/FB flange, LB foot, CA/CB clevis, CR, SDB or FTC mounting to suit the fixture, and add -S to the code if position sensing is needed.

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 0.2 – 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 Single-acting: do not force the rod against the spring.
  • check Installation by qualified personnel per AirTAC docs.

Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE25X25B FAQ

Push force is 210.1 N at 0.5 MPa and 308.3 N at 0.7 MPa, both already net of the return spring. Operating pressure is 0.2-1.0 MPa (28-145 psi), proof pressure 1.5 MPa (215 psi), air filtered to 40 um, speed 50-500 mm/s, temperature -20 to +70 C. Air extends the rod; the spring retracts it.

The ISO 21287 compact body cuts mounting length by about 50% versus an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome rod and fixed TPU bumpers at both ends. Sensing is not fitted as standard: order the -S magnet option to enable CMSE / DMSE switches. Mounting options include FA/FB flange, LB foot, CA/CB clevis, CR, SDB and FTC.

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