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AirTAC ACEJ Series · ISO 21287 Compact Cylinder

Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40

The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40 is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø80mm bore and 300mm 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.

  • BoreØ80 mm
  • Stroke300 mm
  • Port size1/8"
  • Acting typeDouble acting, double rod, adjustable stroke
  • Rod threadM12×1.75
  • CushionFixed TPU bumper (both ends)
$188.14 $204.53Save 8% Standard model — ready in 3-5 business days to process and dispatch
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About the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40

The ACEJ80X300-40 is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 300 mm stroke by up to 40 mm, giving a usable range of 260-300 mm without changing the order code. The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into long-stroke machines where a full-profile body would not fit.

The hard-anodized aluminium body carries a 20 mm S45C hard-chrome rod, fixed TPU bumpers absorb end-of-stroke energy, and the optional -S magnet enables CMSE / DMSE switches - without the -S code there is no magnet fitted. Speed range is 30-500 mm/s.

Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40 Technical Specifications

ModelAirtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40
SeriesACEJ compact cylinder
StandardISO 21287
Bore sizeØ80 mm
Stroke300 mm
Acting typeDouble acting, double rod, adjustable stroke
Port size1/8"
Rod threadM12×1.75
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 300 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 (Ø80mm)

PressureForce (both ways)
0.5 MPa2356 N
0.7 MPa3299 N
Max (@1.0 MPa)481 kgf

ACEJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).

Model Code: Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40

ACEJISO 21287 compact cylinder (adjustable-stroke).
80Bore size in mm.
×300Stroke length in mm.
-40Adjustable stroke window (mm the extend stroke can be shortened on site).
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 (double rod, 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 ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40 Is Used

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Clamping of welded steel frames

About 150 kg of usable push at 0.5 MPa seats automotive subframes into a weld jig; the compact body saves roughly 50% of the length an ISO 15552 profile cylinder would need.

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Gate diverter on bottling conveyors

The 20 mm hard-chrome rod and 30-500 mm/s speed suit fast pusher gates, and the optional -S magnet with a DMSE switch confirms the gate has reached the trimmed end position.

Is the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40 the Right Cylinder?

If your jig needs a shorter stroke than 260 mm, order a smaller -NN window instead of trimming below the 40 mm limit. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock: on air loss the rod still drifts, so add a separate holding valve for suspended loads. FA flange and LB foot mount on the ISO 21287 face, and the optional -S magnet pairs with CMSE / DMSE switches for end-position sensing.

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 ACEJ80~100 Adjustable Compact Cylinder ACEJ80X300-40 FAQ

At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N; at 0.7 MPa push is 3518.6 N and pull 3298.7 N, with a theoretical maximum of 512.6 kgf at 1.0 MPa. The -40 code sets a 40 mm adjustment window: an external stop screw shortens the 300 mm extend stroke on site, so the working range is 260-300 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), and the port is 1/8" PT with an M12x1.75 female rod thread.

The magnet is not fitted as standard - it is the optional -S ordering code. With -S specified, CMSE or DMSE reed or solid-state switches sense end positions via the magnet slots around the hard-anodized aluminium body. Without -S no magnet is present and no switch can read position. The fixed TPU bumpers at both ends only decelerate the piston near the ends of travel and never hold or brake a load.

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