Airtac MICJ Adjustable Mini Cylinder MICJ40X400-30S
The AirTAC MICJ Adjustable Mini Cylinder MICJ40X400-30S 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 MICJ40X400-30S
Trim the forward stop by up to 30 mm on site without swapping hardware using the AirTAC MICJ40X400-30S. This double-acting round-body stainless steel mini cylinder pairs that adjustable extend stroke with a needle-set variable air cushion at both ends, letting you dial in the exact 370-400 mm end position while soaking up high-speed impact.
Built with a riveted stainless barrel and rod, the unit resists mild corrosion and washdown environments. Because this is a -S SKU, a built-in piston magnet supports CMSG, DMSG, and EMSG sensors for position detection. Note that Ø40 is a non-ISO-6432 size, and the cushion only decelerates near the stroke end—it will not lock or hold the load on air loss.
Airtac MICJ Adjustable Mini Cylinder MICJ40X400-30S Technical Specifications
| Model | Airtac MICJ Adjustable Mini Cylinder MICJ40X400-30S |
|---|---|
| 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 MICJ40X400-30S
| 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 MICJ40X400-30S Is Used
Press Stroke Tuning
Dials in a precise 385 mm press downstroke via the 30 mm extend adjuster, ensuring consistent crimp depth without reprogramming machine logic.
Pallet Stopper Gate
Halts loaded pallets on a gravity roller line; the stainless build survives dusty transit hubs and the 32 kg vertical lift capacity handles heavy gates.
Is the Airtac MICJ Adjustable Mini Cylinder MICJ40X400-30S the Right Cylinder?
When sizing this 40 mm bore, moving down to the Ø32 model drops the 0.5 MPa push force to 402.2 N, while no larger MICJ bore exists if you need more power than the 628.3 N offered here. The external stop screw and dual air cushions are ideal for fast, repeatable set-position moves where you must tune out mechanical shock. If the application requires the load to stay put during an air loss event, add an external rod lock or pilot check valve, as the stop screw only sets the end position and the cushion solely decelerates. Mount via LB foot, FA flange, or TC trunnion (SDB is unavailable on this adjustable variant), and use the magnet for CMSG/DMSG/EMSG switches.
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 MICJ40X400-30S FAQ
At 0.7 MPa, push increases to 879.6 N and pull to 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external screw shortens the extend stroke by up to 30 mm, letting you set the exact forward end position. A needle valve adjusts the variable air cushion at both ends to decelerate the piston at high speed. The -S suffix means it includes a magnet for CMSG, DMSG, or EMSG sensors.
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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