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AirTAC ACEJ Series · ISO 21287 Compact Cylinder

Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B

The AirTAC ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø12mm bore and 30mm 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.

  • BoreØ12 mm
  • Stroke30 mm
  • Port sizeM5×0.8
  • Acting typeDouble acting, double rod, adjustable stroke
  • Rod threadM3×0.5
  • CushionFixed TPU bumper (both ends)
$36.47 $42.62Save 14% Standard model — ready in 3-5 business days to process and dispatch
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About the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B

The ACEJ12X30-10B is a double acting compact cylinder built to ISO 21287, with a 12 mm bore and a 30 mm stroke that an external stop screw trims by up to 10 mm on site, giving a usable extend range of 20-30 mm. The male rod thread (B code) on the 6 mm rod bolts straight into small tooling plates.

The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures and guarded cells where a full-length body will not fit. The hard-anodized aluminium body carries a fixed TPU bumper at both ends, and the magnet is the optional -S code - this unit has none, so CMSE or DMSE switches cannot be fitted unless you order -S.

Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B Technical Specifications

ModelAirtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B
SeriesACEJ compact cylinder
StandardISO 21287
Bore sizeØ12 mm
Stroke30 mm
Acting typeDouble acting, double rod, adjustable stroke
Port sizeM5×0.8
Rod threadM3×0.5
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 50 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 (Ø12mm)

PressureForce (both ways)
0.5 MPa42 N
0.7 MPa59 N
Max (@1.0 MPa)9 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 ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B

ACEJISO 21287 compact cylinder (adjustable-stroke).
12Bore size in mm.
×30Stroke length in mm.
-10Adjustable 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 ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B Is Used

precision_manufacturing

Micro part ejection

Knocks small pressed or moulded parts off a nest on an assembly bench, where the 20-30 mm trimmed stroke clears the part without over-travel.

sensors

Compact test stations

Applies light contact force to small PCBs or sensors in a go/no-go gauge; at 0.5 MPa the push stays gentle enough for delicate work.

Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B the Right Cylinder?

Remember the stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the rod will drift if air is lost. FA flange or LB foot mounts and I/Y rod knuckles fit the ISO 21287 face; order the -S variant if you need 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 ACEJ12 Adjustable Compact Cylinder ACEJ12X30-10B FAQ

At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push is 79.2 N and pull 59.4 N; theoretical maximum is 11.5 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window: a stop screw on the front shortens the 30 mm extend stroke to any setting between 20 and 30 mm. It is an end stop only - on air loss the piston drifts, so it does not hold a load. Speed range is 30-500 mm/s and operating pressure is 0.15-1.0 MPa (22-145 psi).

The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end and an M5x0.8 air port. Mounts include FA flange, LB foot and I/Y rod knuckles on the standard face. Position sensing needs the optional -S magnet code - this model (no S) has no magnet, so CMSE or DMSE switches cannot be detected until you order the -S variant.

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