Airtac MICJ Adjustable Mini Cylinder MICJ40X400-75
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X400-75 is a genuine double acting, double rod, adjustable stroke + cushion round-body mini air cylinder with a Ø40mm bore and 400mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke400 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 MICJ40X400-75
Dial in a precise forward stop on-site without swapping hardware using this 40mm bore round-body mini cylinder. An external stop screw shortens the extend end position by up to 75mm, yielding a usable forward range of 325-400mm, while a needle-set adjustable air cushion at both ends absorbs high-speed shock. The stainless-steel barrel and rod resist mild corrosion and washdown environments.
It features a 1/4" port, an M12x1.25 male rod thread, and operates at speeds from 30-800 mm/s. Note this non-magnetic SKU cannot accept position sensors; adding the -S variant enables CMSG, DMSG, or EMSG switches.
Airtac MICJ Adjustable Mini Cylinder MICJ40X400-75 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X400-75 |
|---|---|
| Series | MICJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 MICJ40X400-75
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -75 | 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 MICJ40X400-75 Is Used
Large Bag Flattener
Compresses bulky product bags at cycle speeds up to 800 mm/s, letting the dual adjustable air cushions soak up the impact energy at the 400mm stroke end.
Pallet Stopper Gate
Acts as a robust pneumatic stop for heavy pallets, using the 377 N safe working capacity to arrest momentum while the needle cushion prevents endcap slam.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X400-75 the Right Cylinder?
When sizing this 40mm bore unit, stepping down to a 32mm bore drops the 0.5 MPa push force to 402.2 N, while no larger MICJ round-body size exists above 40mm.
Remember the stop screw sets only the extend end position and is not a mid-stroke lock; the cylinder drifts on air loss, so fit an external rod lock or pilot check valve for held loads. Mount using LB foot, FA flange, or TC trunnion brackets (SDB pivot-block is unavailable on this adjustable variant). Because this SKU lacks a magnet, it cannot host 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)
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 MICJ40X400-75 FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 75mm on-site, setting the forward end position without affecting the full retract. Needle valves adjust the air cushion at both ends to decelerate the load near stroke end. This SKU has no magnet, so it cannot take sensors; the -S version is required for CMSG/DMSG/EMSG switches.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
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