Airtac MIJ Adjustable Cylinder MIJ40X40-40S
The AirTAC MIJ Adjustable Cylinder MIJ40X40-40S 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 MIJ40X40-40S
Trimming the forward end by up to 40 mm via an external stop screw, this round-body mini cylinder lets you dial in the exact forward position on-site. The retract stroke remains full, meaning one part number covers several forward stops without swapping hardware.
It operates on a 1/4" port and includes a built-in magnet for position sensing.
Airtac MIJ Adjustable Cylinder MIJ40X40-40S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X40-40S |
|---|---|
| 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 MIJ40X40-40S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 MIJ40X40-40S Is Used
Heavy Diverter Gate
Positioning a heavy routing gate on a packaging line, using the 40 mm extend adjustment to fine-tune the divert angle for different carton widths without changing the cylinder.
Variable Stroke Press
Applying a 628.3 N sealing force to cartons, using the external stop nut to shorten the extend stroke for varying package heights on the fly.
Pallet Stopper Block
Halting pallets on a washdown roller conveyor, relying on the stainless build for moisture resistance and the adjustable forward stop to set the exact pallet halt point.
Is the Airtac MIJ Adjustable Cylinder MIJ40X40-40S the Right Cylinder?
If you need more force, there is no larger MIJ bore available. The external adjuster is perfect for taking up mechanical tolerances during setup. Remember that the stop screw sets the end position but is not a mid-stroke lock; the piston will drift on air loss, so use an external rod lock or pilot check valve for holding. Mounting options include LB foot, FA flange, and TC trunnion (SDB is not available), and the -S magnet enables 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 MIJ40X40-40S FAQ
This 40 mm bore cylinder uses a 1/4" port. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 40 mm on-site, while the retract stroke remains full. The -S suffix means it has a built-in piston magnet for CMSG, DMSG, or EMSG sensors. It uses fixed TPU bumper pads, not an adjustable air cushion.
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 MIJ40X40-40S
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