Airtac MIJ Adjustable Cylinder MIJ40X450-40
The AirTAC MIJ Adjustable Cylinder MIJ40X450-40 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 MIJ40X450-40
Dial in a precise forward end position on the fly with the AirTAC MIJ40X450-40, a round-body stainless steel mini cylinder built for double-acting service. An external stop screw lets you shorten the extend stroke by up to 40 mm on site, giving a usable forward range of 410 to 450 mm without changing the part number. The retract stroke remains full length. Because this is a Ø40 bore, it is a non-ISO-6432 size, yet the riveted stainless barrel and rod still provide excellent mild corrosion and washdown resistance.
This bore generates substantial force, pushing with 628.3 N and pulling with 527.8 N at 0.5 MPa. Air connects via a 1/4" port, driving the Ø16 mm piston rod at 30-800 mm/s. Fixed TPU bumper pads absorb the end-of-stroke impact. Note this specific SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without switching to the -S variant.
Airtac MIJ Adjustable Cylinder MIJ40X450-40 Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X450-40 |
|---|---|
| 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 MIJ40X450-40
| 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 MIJ40X450-40 Is Used
Heavy Diverter Gate
Shifts a loaded diverting arm on a conveyor.
Pallet Staging Pusher
Indexes pallets into a wrapping station. The external screw fine-tunes the extend end position to account for pallet width variations without swapping cylinders.
Vertical Flap Folder
Folds heavy cardboard flaps prior to sealing. The bumper pads absorb the impact, and the adjustable forward stop ensures crisp folding depth across material thickness changes.
Is the Airtac MIJ Adjustable Cylinder MIJ40X450-40 the Right Cylinder?
When sizing this actuator, compare it against adjacent bores to match your load. Stepping down to the MIJ32 drops the 0.5 MPa push force to 402.2 N, whereas this Ø40 model provides 628.3 N. There is no larger standard MIJ bore, making this the top choice for heavy mini-cylinder tasks. The 40 mm adjustment window is ideal for taking up mechanical tolerances or staging feeds during changeovers. Remember that the stop screw only sets the end position; it is not a mid-stroke lock. The piston will drift on air loss, so fit an external rod lock or pilot check valve if you need to hold a suspended load. Mounting options include LB foot, FA flange, and TC trunnion, but the SDB pivot block is not available on this adjustable variant.
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 MIJ40X450-40 FAQ
This double-acting cylinder uses a 1/4" air port and a Ø16 mm rod with an M12x1.25 male thread. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and pull is 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 range of 410 to 450 mm. The retract stroke remains full length. This SKU does not include a magnet, so it cannot support CMSG, DMSG, or EMSG sensors; you must specify the -S variant for position sensing.
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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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Most inquiries answered within 7-8 hours.
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