Airtac MIJ Adjustable Cylinder MIJ40X400-10S
The AirTAC MIJ Adjustable Cylinder MIJ40X400-10S 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 MIJ40X400-10S
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 10 mm (usable forward travel 390-400 mm).
Built with a riveted stainless-steel barrel and a Ø16 mm piston rod, it resists mild corrosion and washdown environments. This -S variant includes a built-in piston magnet for CMSG, DMSG, or EMSG sensors, and it relies on fixed TPU bumper pads to decelerate the stroke end. The 1/4" port and M12x1.25 male rod thread handle robust air flows and heavy mounting demands.
Airtac MIJ Adjustable Cylinder MIJ40X400-10S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X400-10S |
|---|---|
| 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 MIJ40X400-10S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -10 | 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 MIJ40X400-10S Is Used
Pallet Stopper Assembly
Halts loaded pallets at a packing station; the external stop screw absorbs impact tolerances and sets the exact 390 mm stopping point without re-engineering the fixture.
Clamp Positioning
Secures large metal parts for machining, using the CMSG sensor to confirm the clamp and the adjustable extend end to compensate for different workpiece thicknesses on the fly.
Is the Airtac MIJ Adjustable Cylinder MIJ40X400-10S the Right Cylinder?
When sizing this 40 mm bore, stepping down to a Ø32 MIJ drops the 0.5 MPa push force to 402.2 N, while no larger standard MIJ bore exists. The 10 mm adjustment window is ideal for taking up mechanical tolerances or synchronizing multiple stops during changeovers without swapping cylinders. The external screw sets the extend end position only; it is not a mid-stroke lock, and the piston will drift on air loss. Use an external rod lock or pilot check valve if you need to hold a load vertically.
Mounting options include LB foot, FA flange, and TC trunnion brackets, plus CA, U, R, and CM back covers, but the SDB pivot block is not available on this adjustable-stroke variant. Because this is the -S magnet version, you can directly mount CMSG, DMSG, or EMSG switches for 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 MIJ Adjustable Cylinder MIJ40X400-10S FAQ
The theoretical maximum force is 128.1 kgf at 1.0 MPa. This Ø40 bore uses a 1/4" air port and a Ø16 mm rod with an M12x1.25 male thread.
An external stop screw shortens the extend stroke by up to 10 mm on-site, allowing you to set the forward end position precisely between 390 mm and 400 mm; the retract stroke remains full. The -S suffix means it has a built-in piston magnet for CMSG, DMSG, or EMSG sensors. The fixed TPU bumper pads decelerate the stroke end but do not lock the position.
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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.
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Most inquiries answered within 7-8 hours.
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