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AirTAC MICJ Series · Mini Cylinder

Airtac MICJ Adjustable Mini Cylinder MICJ40X225-50

The AirTAC MICJ Adjustable Mini Cylinder MICJ40X225-50 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 225mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.

  • BoreØ40 mm
  • Stroke225 mm
  • Port size1/4"
  • Acting typeDouble acting, double rod, adjustable stroke + cushion
  • Rod threadM12×1.25
  • CushionVariable air cushion, both ends
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About the Airtac MICJ Adjustable Mini Cylinder MICJ40X225-50

Dial in exact forward stops on-site with the AirTAC MICJ40X225-50, a double-acting round-body mini cylinder featuring a 50mm adjustable extend stroke. An external screw trims the forward end position down from the 225mm nominal maximum without swapping hardware, while a needle-set variable air cushion at both ends soaks up high-speed shock. Built with a stainless-steel barrel and Ø16 rod, it resists mild corrosion and washdown environments.

This Ø40 bore delivers serious thrust for a mini format, pushing 628.3N and pulling 527.8N at 0.5 MPa. It operates at 30-800 mm/s, uses a 1/4" port, and this specific SKU lacks a magnet, meaning it cannot host CMSG/DMSG/EMSG sensors without upgrading to the -S variant.

Airtac MICJ Adjustable Mini Cylinder MICJ40X225-50 Technical Specifications

ModelAirtac MICJ Adjustable Mini Cylinder MICJ40X225-50
SeriesMICJ mini cylinder
Bore sizeØ40 mm
Stroke225 mm
Acting typeDouble acting, double rod, adjustable stroke + cushion
Port size1/4"
Rod threadM12×1.25
FluidAir (filtered by 40µm element)
Operating pressure0.15 – 1.0 MPa
Proof pressure1.5 MPa
Temperature-20 to +70 °C
Speed range30 – 800 mm/s
CushionVariable air cushion, both ends
Max standard strokeUp to 500 mm

Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø40 bore is a larger, non-ISO-6432 size.

Theoretical Output Force (Ø40mm)

PressureForce (both ways)
0.5 MPa528 N
0.7 MPa739 N
Max (@1.0 MPa)108 kgf

MIJ / MICJ are 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 MICJ Adjustable Mini Cylinder MICJ40X225-50

MICJround-body mini cylinder (adjustable-stroke, variable cushion).
40Bore size in mm.
×225Stroke length in mm.
-50Adjustable stroke window (mm the extend stroke can be shortened on site).
-SOptional built-in magnet for CMSG / DMSG / EMSG sensors.

MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (double rod, adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.

Where the Airtac MICJ Adjustable Mini Cylinder MICJ40X225-50 Is Used

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Heavy Clamping

Secure heavy workpieces with up to 32kg of vertical lift force, tuning the 50mm extend stop to clamp precisely without over-traveling.

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High-Speed Diverting

Divert heavier products at speed; the dual adjustable air cushions absorb the impact energy at the 225mm stroke end.

Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X225-50 the Right Cylinder?

The 50mm extend adjuster and dual cushions shine in fast set-position moves where you must tune the forward stop and decelerate impact without adding external shock absorbers.

Keep in mind the stop screw sets the end position but acts as neither a mid-stroke lock nor a brake; the air cushion only decelerates near the stroke end. If the application must hold a load on air loss, add an external rod lock or pilot check valve. Mount via LB foot, FA flange, or TC trunnion (SDB pivot-block is not available), and note this non-magnetic SKU cannot take sensors.

Quick checklist

  • ✓ Required force at your working pressure
  • ✓ Stroke and mounting space
  • ✓ Port/thread type (PT / G)
  • ✓ Magnet (-S) for sensors?
  • ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
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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 Avoid side load on the piston rod.
  • check Do not dismantle the riveted front/back covers.
  • check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
  • check Installation by qualified personnel per AirTAC docs.

Airtac MICJ Adjustable Mini Cylinder MICJ40X225-50 FAQ

The theoretical maximum force is 128.1 kgf at 1.0 MPa.

An external screw shortens the extend stroke by up to 50mm, letting you set the forward end position on-site. Needle valves adjust the variable air cushion at both ends to decelerate high-speed impacts. This cylinder does not hold position on air loss; use an external rod lock for that. Note this SKU has no magnet and cannot take sensors.

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Standard models are processed and dispatched in 3-5 business days.

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Related AirTAC MICJ Cylinders

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