Airtac MIJ Adjustable Cylinder MIJ40X400-30
The AirTAC MIJ Adjustable Cylinder MIJ40X400-30 is a genuine double acting, double rod, adjustable stroke 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
- Rod threadM12×1.25
- CushionFixed TPU bumper pads
- 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 MIJ Adjustable Cylinder MIJ40X400-30
Dialing in a precise forward end position on-site is effortless with this stainless round-body mini cylinder, thanks to an external stop screw that shortens the extend stroke by up to 30 mm. The AirTAC MIJ40X400-30 operates as a double-acting actuator with a 400 mm nominal stroke, yielding a usable forward range of 370-400 mm while retract remains full. Its stainless steel barrel and rod supply reliable mild corrosion and washdown resistance without relying on a tie-rod or extruded profile design.
Pneumatic connection is via a 1/4" port, and internal fixed TPU bumper pads decelerate the piston at the stroke ends. Note that this specific SKU lacks a magnet and cannot host position sensors.
Airtac MIJ Adjustable Cylinder MIJ40X400-30 Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X400-30 |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 | Fixed TPU bumper pads |
| 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 MIJ Adjustable Cylinder MIJ40X400-30
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 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 MIJ Adjustable Cylinder MIJ40X400-30 Is Used
Staged Product Feeding
Indexes rigid packaging materials into a sealing station, leveraging the adjustable forward stop to dial in the exact 375 mm feed length without changing hardware.
Pallet Changeover Stops
Acts as a physical end stop for pallets moving into a wrap zone, easily shortening the extend position by up to 30 mm to accommodate different pallet footprints on the fly.
Is the Airtac MIJ Adjustable Cylinder MIJ40X400-30 the Right Cylinder?
Since 40 mm is the largest in this series, moving beyond it requires a different body style. The 30 mm adjustment window is ideal for taking up mechanical tolerances during setup or covering multiple stop points with a single part number, eliminating the need to swap cylinders for minor position changes.
Keep in mind the external stop screw sets the end position but acts purely as a stop, not a mid-stroke lock or brake. The piston will drift if air pressure is lost or the valve is centered; utilize an external rod lock or pilot-operated check valve for strict load holding. Mounting options include LB foot, FA flange, and TC trunnion (the SDB pivot block is unavailable for this adjustable variant). Because this SKU has no -S magnet, CMSG, DMSG, and EMSG sensors cannot be fitted.
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 MIJ Adjustable Cylinder MIJ40X400-30 FAQ
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod. 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 on-site, allowing you to set the forward end position between 370 mm and 400 mm. The retract stroke remains full. This SKU has no magnet (-S variant required for sensors) and features a stainless build with fixed TPU bumper pads.
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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