Airtac MIJ Adjustable Cylinder MIJ40X350-40S
The AirTAC MIJ Adjustable Cylinder MIJ40X350-40S 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 MIJ40X350-40S
Dial in a precise forward end position on-site with the AirTAC MIJ40X350-40S, a round-body stainless mini cylinder featuring a 40mm adjustable extend stroke window. This double-acting actuator uses an external stop screw to trim the forward travel from 350mm down to 310mm, while retract remains full. The stainless-steel barrel and Ø16 rod resist mild corrosion and washdown environments.
The 1/4" port and M12x1.25 male rod thread handle the necessary air volume and mechanical linkage for heavy mini-cylinder tasks.
Airtac MIJ Adjustable Cylinder MIJ40X350-40S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X350-40S |
|---|---|
| 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 MIJ40X350-40S
| 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 MIJ40X350-40S Is Used
Pallet Staging Stops
Acts as a robust pneumatic stop for staged pallets, leveraging the 32kg vertical lift capacity to manage heavy goods while adjusting the extend position to match pallet depth.
Press Tool Ejection
Ejects dense metal parts from a press tool, using the stainless construction for mild corrosion resistance and dialing in the exact ejection stroke to clear the die.
Is the Airtac MIJ Adjustable Cylinder MIJ40X350-40S the Right Cylinder?
When sizing this actuator, compare both directions: stepping down to the Ø32 bore drops the 0.5MPa push force to 402.2N, whereas the Ø40 provides 628.3N. Since this is the largest standard round-body mini size, moving up requires a different frame type. The 40mm stop screw is invaluable for taking up mechanical tolerances during setup or covering multiple stop positions with a single part number.
Remember that the stop screw sets the end position but acts purely as a mechanical stop, not a mid-stroke lock. The piston will drift on air loss, so add an external rod lock or pilot check valve for held loads. Mounting options include LB foot, FA flange, and TC trunnion (SDB is unavailable here), and the included -S magnet supports CMSG, DMSG, or EMSG sensors.
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 MIJ40X350-40S FAQ
The theoretical maximum force is 128.1kgf at 1.0MPa.
An external stop screw shortens the extend stroke by up to 40mm (usable extend 310-350mm); retract remains full stroke. The -S suffix means a piston magnet is built-in for CMSG/DMSG/EMSG sensors. Fixed TPU bumper pads decelerate the stroke ends.
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.
Request a Quote for Airtac MIJ Adjustable Cylinder MIJ40X350-40S
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