Airtac MICJ Adjustable Mini Cylinder MICJ40X300-10
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X300-10 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke300 mm
- Port size1/4"
- Acting typeDouble acting, double rod, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MICJ Adjustable Mini Cylinder MICJ40X300-10
Dial in the forward stop on site without swapping cylinders: the MICJ40X300-10 features an external screw that shortens the extend end position by up to 10 mm, giving a usable forward range of 290-300 mm. A needle-set variable air cushion at both ends soaks up high-speed shock, letting you set the position and control the impact simultaneously. This round-body stainless-steel mini cylinder is double-acting and built with a riveted/rolled construction that shrugs off mild corrosion and washdown environments.
As a non-ISO-6432 Ø40 bore, it delivers substantial force, pushing with 628.3 N and pulling with 527.8 N at 0.5 MPa. The 1/4" port feeds a Ø16 mm piston rod with an M12x1.25 male thread, moving loads at 30-800 mm/s. Note this SKU lacks the -S magnet, so it cannot accept CMSG/DMSG/EMSG sensors.
Airtac MICJ Adjustable Mini Cylinder MICJ40X300-10 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X300-10 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting, double rod, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up 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)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 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 MICJ40X300-10
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -10 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Optional 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 MICJ40X300-10 Is Used
Pallet Deceleration Gate
Stop heavy pallets on a 30-800 mm/s line; the dual adjustable air cushions absorb the kinetic energy at stroke end while the external screw sets the stopping point.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X300-10 the Right Cylinder?
When sizing this 40 mm bore, check both directions: dropping to a Ø32 bore cuts the 0.5 MPa push force to 402.2 N, while no larger MICJ bore exists. The 10 mm extend stop screw combined with the dual adjustable air cushion is ideal for fast set-position moves where you must trim the forward stop and decelerate smoothly at high speed.
Remember that the stop screw sets the end position but is not a mid-stroke lock. A plain cylinder does not hold its load on air loss or when the valve is centered, as the piston drifts. For a held load, install an external rod lock or a pilot-operated check valve. Mount using LB foot, FA flange, or TC trunnion (SDB pivot-block is not available on this adjustable variant). If you need position sensing, select the -S magnet variant instead.
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)
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 MICJ40X300-10 FAQ
At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa it pushes with 879.6 N and pulls with 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. This Ø40 bore uses a 1/4" air port and a Ø16 mm rod with an M12x1.25 male thread.
An external screw shortens the extend stroke by up to 10 mm (usable range 290-300 mm); retract remains full. A needle-set variable air cushion at both ends decelerates the piston near stroke end to absorb high-speed shock. The cushion only decelerates and the screw only sets the end position, neither acts as a mid-stroke lock. The piston drifts on air loss, so use an external rod lock for holding. This SKU lacks the -S magnet and cannot take sensors.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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