Airtac MIJ Adjustable Cylinder MIJ40X40-30S
The AirTAC MIJ Adjustable Cylinder MIJ40X40-30S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 40mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke40 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 MIJ40X40-30S
Dial in your forward end position on-site with the AirTAC MIJ40X40-30S, a round-body stainless mini cylinder featuring a 30mm external adjustment window that shortens the extend stroke without swapping parts. The built-in piston magnet (-S) supports CMSG, DMSG, and EMSG switches for precise end-of-stroke detection, while the 1/4" port and M12x1.25 male rod thread handle robust pneumatic supply and mounting.
The stainless steel barrel and rod resist mild corrosion and washdown environments. Fixed TPU bumper pads decelerate the piston at the stroke ends, operating at speeds from 30 to 800 mm/s across a -20 to +70 C temperature range.
Airtac MIJ Adjustable Cylinder MIJ40X40-30S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X40-30S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MIJ40X40-30S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 MIJ40X40-30S Is Used
Staged Diverting Stops
Set specific forward stop positions on a sorting line to handle mixed product lengths, adjusting the extend end on the fly to act as a customizable physical barrier.
Is the Airtac MIJ Adjustable Cylinder MIJ40X40-30S the Right Cylinder?
The 30mm external stop screw is ideal for taking up mechanical tolerances during setup or covering multiple intermediate stop points with a single assembly.
Because it is a non-ISO-6432 round-body cylinder, ensure your mounting interface matches the available LB foot, FA flange, or TC trunnion brackets, noting that the SDB pivot block is not offered on this adjustable variant. The stop screw sets the forward end position only and does not function as a mid-stroke lock; the piston will drift on air loss, so add 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 MIJ40X40-30S FAQ
This 40mm bore cylinder uses a 1/4" air port and a 16mm piston rod. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 30mm on-site, allowing a usable forward range of 10-40mm while retract remains full. The -S suffix indicates a built-in piston magnet for CMSG/DMSG/EMSG sensors, and the stainless steel construction provides mild corrosion resistance.
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 MIJ40X40-30S
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