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AirTAC MICJ Series · Mini Cylinder

Airtac MICJ Adjustable Mini Cylinder MICJ40X100-30STC

The AirTAC MICJ Adjustable Mini Cylinder MICJ40X100-30STC is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 100mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.

  • BoreØ40 mm
  • Stroke100 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 MICJ40X100-30STC

Dial in the forward stop on site without swapping cylinders: the MICJ40X100-30STC uses an external screw to shorten the extend end position by up to 30 mm, giving a usable forward range of 70-100 mm. Retract remains the full 100 mm. A needle-set variable air cushion at both ends soaks up high-speed shock, letting you set the position and control the impact.

This double-acting round-body mini cylinder features a stainless-steel barrel and Ø16 rod for mild corrosion and washdown resistance. The 1/4" port feeds the bore, and the built-in magnet (-S) supports CMSG, DMSG and EMSG switches.

Airtac MICJ Adjustable Mini Cylinder MICJ40X100-30STC Technical Specifications

ModelAirtac MICJ Adjustable Mini Cylinder MICJ40X100-30STC
SeriesMICJ mini cylinder
Bore sizeØ40 mm
Stroke100 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 MICJ40X100-30STC

MICJround-body mini cylinder (adjustable-stroke, variable cushion).
40Bore size in mm.
×100Stroke length in mm.
-30Adjustable 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 MICJ40X100-30STC Is Used

conveyor_belt

Heavy Carton Diverter

Shifts heavy packaging lines at speed, using the 30 mm extend trim to hit the diverter gate precisely while the dual air cushions absorb the 628.3 N impact.

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Pallet Stop Gate

Halts pallets on a TC trunnion mount; the external screw fine-tunes the stopping distance on the fly without removing the cylinder from the fixture.

Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X100-30STC the Right Cylinder?

The adjustable stop plus dual cushions excel in fast set-position moves where you must trim the forward endpoint without re-engineering the cell.

The TC trunnion mount handles pivot loads, though the SDB pivot-block is not offered on this adjustable variant. Because the stop screw only sets the end position and the cushion only decelerates near stroke end, the piston will drift on air loss. Use an external rod lock or pilot-operated check valve if you must hold a suspended load.

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 MICJ40X100-30STC FAQ

This Ø40 bore cylinder has a 1/4" port and M12x1.25 male rod thread. The theoretical maximum force is 128.1 kgf at 1.0 MPa.

An external stop screw shortens the extend stroke by up to 30 mm (usable forward range 70-100 mm); retract stays the full 100 mm. A needle-set variable air cushion at both ends decelerates the piston near stroke end to absorb high-speed shock. The -S suffix means it has a built-in magnet for CMSG, DMSG and EMSG sensors.

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