Airtac MIJ Adjustable Cylinder MIJ40X450-20S
The AirTAC MIJ Adjustable Cylinder MIJ40X450-20S 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 MIJ40X450-20S
Dialing in a precise forward end position on-site is effortless with this stainless-steel round-body mini cylinder, thanks to an external stop screw that trims the extend stroke by up to 20 mm (yielding a usable 430-450 mm forward travel). As a double-acting actuator, it delivers substantial power—pushing with 628.3 N and pulling with 527.8 N at 0.5 MPa—while the -S suffix equips the piston with a built-in magnet for CMSG, DMSG, or EMSG position sensing.
The robust Ø40 mm bore utilizes a 1/4" air port and a male M12x1.25 rod thread to handle heavy loads, offering a safe working capacity of roughly 377 N (about 60% of its 0.5 MPa push force). Built with a riveted stainless barrel and rod, it withstands mild washdown environments. It relies on fixed TPU bumper pads to decelerate the stroke end, and because it lacks a mid-stroke lock, you will need an external pilot check valve to hold a load securely against gravity.
Airtac MIJ Adjustable Cylinder MIJ40X450-20S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X450-20S |
|---|---|
| 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 MIJ40X450-20S
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | Stroke length in mm. |
| -20 | 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 MIJ40X450-20S Is Used
Heavy Diverter Gate
Shifts large packages on a high-throughput line, using the 20 mm stroke adjustment to fine-tune the gate angle for varying box widths without changing hardware.
Pallet Stopper Arm
Halts loaded pallets at a packaging station, relying on the stainless build for damp environments and adjusting the stop point on-site to match pallet length changes.
Is the Airtac MIJ Adjustable Cylinder MIJ40X450-20S the Right Cylinder?
The integrated 20 mm adjustability is ideal for taking up mechanical tolerances during setup or covering multiple stop points with a single part number. Remember that the stop screw only shortens the extend stroke; retract remains full length. For mounting, you can utilize LB foot, FA flange, or TC trunnion brackets, but note that the SDB pivot block is not offered on this adjustable variant. Position sensing is fully supported via CMSG/DMSG/EMSG switches because this SKU includes the -S magnet.
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 MIJ40X450-20S 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 20 mm on-site, letting you set the exact forward end position without swapping cylinders; the retract stroke remains full length. The -S suffix means a magnet is built into the piston, allowing direct mounting of CMSG, DMSG, or EMSG sensors for position detection.
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 MIJ40X450-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.