Airtac MICJ Adjustable Mini Cylinder MICJ40X400-30
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X400-30 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 MICJ40X400-30
Dial in a precise forward stop on-site with the AirTAC MICJ40X400-30, a double-acting round-body mini cylinder featuring a 30 mm adjustable extend stroke. An external screw trims the forward end position down from the 400 mm nominal maximum, letting you set exact reach without swapping hardware. A needle-set variable air cushion at both ends absorbs high-speed shock to protect your tooling.
Built with a stainless-steel barrel and a Ø16 mm piston rod, this riveted construction resists mild corrosion and washdown environments. Note this base SKU lacks a magnet and cannot host CMSG/DMSG/EMSG sensors.
Airtac MICJ Adjustable Mini Cylinder MICJ40X400-30 Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X400-30 |
|---|---|
| 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 MICJ40X400-30
| MICJ | round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -30 | 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 MICJ40X400-30 Is Used
Heavy Press Toning
Use the 30 mm extend adjuster to precisely set the 628.3 N forward impact on assembly presses, relying on the dual air cushions to absorb the high-speed shock.
Pallet Stopper Gate
Halt heavy pallets on a washdown line; the stainless build handles splashes while the 1/4" port delivers the volume needed for rapid 400 mm gating.
Vertical Lift Diverter
Lift or divert loads up to 32 kg safely, tuning the forward stop screw to hit exact conveyor heights without overtravel.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X400-30 the Right Cylinder?
The 30 mm extend adjuster is ideal for fast set-position moves where you need to tune the forward stop without mechanical rework.
Remember that the external screw sets the end position but acts as neither a mid-stroke lock nor a brake. If your application must hold a load on air loss, add an external rod lock or pilot-operated check valve. Mount via LB foot, FA flange, or TC trunnion (the SDB pivot-block is not offered on this adjustable variant), and select the -S magnet version if you require position sensing.
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 MICJ40X400-30 FAQ
This Ø40 mm bore cylinder uses a 1/4" port and an M12x1.25 male rod thread.
An external screw shortens the extend stroke by up to 30 mm (retract remains full), while the needle-set variable air cushion at both ends decelerates the piston near stroke ends to soak up shock. This specific SKU has no magnet and cannot take a sensor; you must use the -S variant 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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