Airtac MIJ Adjustable Cylinder MIJ40X450-40S
The AirTAC MIJ Adjustable Cylinder MIJ40X450-40S is a genuine double acting, double rod, adjustable stroke round-body mini air cylinder with a Ø40mm bore and 450mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke450 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 MIJ40X450-40S
Dial in a precise forward end position on-site with the AirTAC MIJ40X450-40S, a round-body stainless mini cylinder featuring a 40 mm extend-stroke adjustment window. An external stop screw lets you shorten the forward travel from the 450 mm nominal maximum down to 410 mm, absorbing setup tolerances without changing the cylinder. Retract travel remains full stroke. Built as a double-acting riveted unit with a stainless barrel and rod, it handles mild washdown environments.
The Ø40 bore delivers substantial power, pushing with 628.3 N and pulling with 527.8 N at 0.5 MPa. The 1/4" port and M12x1.25 male rod thread provide robust connections for high-flow operations. Because this is a -S variant, it includes a built-in piston magnet for position sensing.
Airtac MIJ Adjustable Cylinder MIJ40X450-40S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X450-40S |
|---|---|
| Series | MIJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 450 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 MIJ40X450-40S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | 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 MIJ40X450-40S Is Used
Pallet Positioning
Fine-tune the forward stop to align pallets precisely against a backstop, absorbing mechanical tolerances without re-engineering the fixture.
Controlled Pressing
Set the exact downward travel for a light pressing or seating task, using the bumper pads to decelerate the load just before the tuned end position.
Is the Airtac MIJ Adjustable Cylinder MIJ40X450-40S the Right Cylinder?
When sizing this unit, consider the force boundaries of the MIJ family. Conversely, the Ø40 is the largest available bore in this series. The 40 mm external stop screw is ideal for changeover jobs where you need one part number to cover several staged feed distances.
Remember that the stop screw sets the end position but does not function as a mid-stroke lock; the piston will drift if air pressure is lost, so add an external rod lock or pilot check valve for held loads. Mounting options include LB foot, FA flange, and TC trunnion, but the SDB pivot block is not available on this adjustable variant. Pair the built-in magnet with CMSG, DMSG, or EMSG switches for electronic or reed 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 MIJ40X450-40S FAQ
At 0.7 MPa, push increases to 879.6 N and pull to 738.9 N. 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, allowing a usable forward travel of 410 to 450 mm; the retract stroke remains full. The -S suffix indicates a built-in piston magnet for use with CMSG, DMSG, or EMSG sensors. The cylinder uses fixed TPU bumper pads, not an adjustable air cushion.
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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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