Airtac MIJ Adjustable Cylinder MIJ40X400-30S
The AirTAC MIJ Adjustable Cylinder MIJ40X400-30S 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 MIJ40X400-30S
Dial in a precise forward end position on-site with the AirTAC MIJ40X400-30S, a round-body stainless mini cylinder featuring a 30 mm extend-stroke adjustment window. An external stop screw lets you shorten the forward stroke from its 400 mm nominal maximum down to 370 mm, allowing one part number to cover several stop distances without swapping hardware. Retract remains at the full stroke length.
Built with a stainless-steel barrel and Ø16 mm piston rod, this double-acting actuator resists mild corrosion and handles washdown environments. The -S suffix equips the piston with a magnet for CMSG, DMSG, or EMSG sensors, and the 1/4" port supplies ample air volume for the bore.
Airtac MIJ Adjustable Cylinder MIJ40X400-30S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X400-30S |
|---|---|
| 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 MIJ40X400-30S
| 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 MIJ40X400-30S Is Used
Heavy Diverter Gate
Position heavy package routing gates on a high-speed line, using the 30 mm adjuster to fine-tune the diversion angle for different carton widths without changing actuators.
Large Carton Flap Folder
Fold oversized carton flaps during case erecting, dialing in the exact 370 to 400 mm forward position to prevent crushing while handling thick corrugated materials.
Is the Airtac MIJ Adjustable Cylinder MIJ40X400-30S the Right Cylinder?
The 30 mm adjuster is ideal for taking up mechanical tolerances during setup or staging feeds. Mount via LB foot, FA flange, or TC trunnion, as the SDB pivot block is unavailable for this adjustable variant.
Note that the external stop screw sets the end position but acts purely as a physical stop. It is not a mid-stroke lock, and the fixed TPU bumper pads only decelerate the piston near the stroke end. The cylinder will drift on air loss, so specify an external rod lock or pilot check valve if you need to hold a suspended load.
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 MIJ40X400-30S FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The external screw shortens the extend stroke by up to 30 mm, setting the forward end position without affecting the full retract stroke. The -S suffix indicates a built-in piston magnet for use with 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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