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AirTAC ASE Series · ISO 21287 Compact Cylinder

Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X25

The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X25 is a genuine single acting, push (spring return) 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 typeSingle acting, push (spring return)
  • Rod threadM10×1.5
  • CushionFixed TPU bumper (both ends)
$50.41 $57.50Save 12% Standard model — ready in 3-5 business days to process and dispatch
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About the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X25

This AirTAC ASE50X25 is a single acting push cylinder with spring return, so air extends the rod and the spring pulls it back. It delivers 875.5 N of push force at 0.5 MPa, already net of the return spring, and needs a minimum of 0.2 MPa to move.

Its ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight machine frames and guarded areas. The hard-anodized aluminium body and S45C hard-chrome rod resist wear, and the fixed TPU bumper at both ends absorbs end-of-stroke impact. For a safe working load, plan for about 525 N of real work at 0.5 MPa, which lifts roughly 54 kg vertically with a 2:1 margin.

Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X25 Technical Specifications

ModelAirtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X25
SeriesASE compact cylinder
StandardISO 21287
Bore sizeØ50 mm
Stroke25 mm
Acting typeSingle acting, push (spring return)
Port size1/8"
Rod threadM10×1.5
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 (Ø50mm)

PressurePush force (spring return)
0.5 MPa875.5 N
0.7 MPa1268.2 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 ASE50X25

ASEISO 21287 compact cylinder (single-acting push, spring-return).
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 ASE Single Acting Plunger Type Compact Air Cylinder ASE50X25 Is Used

precision_manufacturing

Jig Clamping

Use the ASE50X25 to clamp small parts in a CNC fixture, where the 875.5 N push at 0.5 MPa holds a component firmly and the spring releases it quickly for the next cycle.

conveyor_belt

Sorting Gate

In a packaging line, this cylinder can push a 25 mm stroke to divert lightweight boxes onto a reject conveyor, with the spring returning the gate to its home position after each pass.

engineering

Guard Interlock

Mount it on a machine guard to push a locking pin into place, ensuring the guard stays closed during operation; the spring retracts the pin when air is removed, allowing safe access.

Is the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X25 the Right Cylinder?

Choose this 50 mm bore if you need a compact, spring-return actuator for short 25 mm strokes. For lighter duty, the 40 mm bore gives 556.8 N at 0.5 MPa, while the 63 mm bore provides 1420.5 N for heavier pushes. The spring retracts the rod on air loss, but it does not hold a mid-stroke position, so use it for simple extend-and-return tasks.

Mounting options include FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, and FTC brackets, all fitting the ISO 21287 face. This model has no magnet, so order the -S code if you need to fit CMSE or DMSE sensors for position detection.

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 ASE50X25 FAQ

At 0.5 MPa, the push force is 875.5 N, and at 0.7 MPa it is 1268.2 N, both net of the return spring. The minimum working pressure is 0.2 MPa, and the proof pressure is 1.5 MPa (215 psi). Operating pressure range is 0.2-1.0 MPa (28-145 psi).

The ASE50X25 body is about 50% shorter than an ISO 15552 profile cylinder, so it fits in confined areas like machine guards or gantries. It uses a fixed TPU bumper at both ends to absorb impact, and you can mount it with FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, or FTC brackets.

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