Airtac MIJ Adjustable Cylinder MIJ40X350-40
The AirTAC MIJ Adjustable Cylinder MIJ40X350-40 is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 350mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke350 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 MIJ40X350-40
Dial in a precise forward end position on the fly with the AirTAC MIJ40X350-40, a round-body stainless mini cylinder built for heavy-duty pneumatic tasks. An external stop screw lets you shorten the extend stroke by up to 40 mm on site, giving a usable forward range of 310-350 mm without changing the cylinder. The retract stroke remains full length. This double-acting actuator delivers serious muscle, pushing with 628.3 N and pulling with 527.8 N at 0.5 MPa.
The riveted stainless-steel barrel and Ø16 mm piston rod shrug off mild corrosion and washdown environments. Because this is a Ø40 bore, it uses a 1/4" port and a male M12x1.25 rod thread, operating as a non-ISO-6432 round-body unit. It relies on fixed TPU bumper pads to decelerate the stroke end.
Airtac MIJ Adjustable Cylinder MIJ40X350-40 Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X350-40 |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 MIJ40X350-40
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | Stroke length in mm. |
| -40 | 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 MIJ40X350-40 Is Used
Pallet Staging Stops
Acts as a robust physical stop for pallets entering a workstation, trimming the forward position by up to 40 mm to accommodate different pallet depths while handling the impact via fixed TPU bumpers.
Is the Airtac MIJ Adjustable Cylinder MIJ40X350-40 the Right Cylinder?
When sizing this actuator, check both directions: stepping down to a Ø32 MIJ drops the 0.5 MPa push force to 402.2 N, while this Ø40 bore provides 628.3 N of forward thrust. There is no larger standard MIJ bore, making this the top choice for high-force mini cylinder needs. The 40 mm adjustment window is invaluable for taking up mechanical tolerances or staging feeds during setup.
Remember that the stop screw only trims the extend end point; it is not a mid-stroke lock. The piston will drift if air pressure drops, so fit an external rod lock or pilot check valve for suspended loads. Mount via LB foot, FA flange, or TC trunnion (the SDB pivot block is not offered on this adjustable variant). This SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors; specify the -S variant if you need position detection.
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 MIJ40X350-40 FAQ
At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. This Ø40 bore uses a 1/4" air port and a male M12x1.25 rod thread.
An external stop screw shortens the extend stroke by up to 40 mm (usable range 310-350 mm), while retract remains full. The screw sets the end position but is not a mid-stroke lock; the piston drifts on air loss. Also, this SKU has no magnet and cannot take sensors.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
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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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