Airtac MIJ Adjustable Cylinder MIJ40X450-50
The AirTAC MIJ Adjustable Cylinder MIJ40X450-50 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 MIJ40X450-50
Dial in a precise forward end position on-site with the AirTAC MIJ40X450-50, a round-body stainless-steel mini cylinder built for double-acting operation. An external stop screw lets you shorten the extend stroke by up to 50 mm, giving you a usable forward range of 400 to 450 mm without swapping parts. The retract stroke remains full length. This riveted construction uses a stainless barrel and Ø16 mm piston rod to resist mild corrosion and washdown environments.
Delivering robust force, this Ø40 mm bore unit pushes 628.3 N and pulls 527.8 N at 0.5 MPa. It runs on a 1/4" port with an M12x1.25 male rod thread. Note that Ø40 is a non-ISO-6432 size. This SKU lacks a magnet, so it cannot take CMSG, DMSG, or EMSG sensors; you would need the -S variant for position detection.
Airtac MIJ Adjustable Cylinder MIJ40X450-50 Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X450-50 |
|---|---|
| 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 MIJ40X450-50
| MIJ | round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | Stroke length in mm. |
| -50 | 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 MIJ40X450-50 Is Used
Staged Carton Sealing
Fine-tune the forward stroke down from 450 mm to press sealing heads without crushing cartons, using the stainless build to endure dusty or humid packaging environments.
Heavy Jig Placement
Set exact mechanical stops for a machining jig across multiple part lengths, taking advantage of the 32 kg vertical lift capacity and fixed TPU bumpers to soften the end of stroke.
Is the Airtac MIJ Adjustable Cylinder MIJ40X450-50 the Right Cylinder?
When sizing this actuator, check both directions: stepping down to the Ø32 bore drops the 0.5 MPa push force to 402.2 N, while no larger MIJ round-body mini exists above Ø40. The 50 mm adjustment window is highly useful for taking up mechanical tolerances or staging feeds during changeovers, letting one part number cover several intermediate stops. The external screw sets the extend endpoint but acts purely as a stop, not a mid-stroke lock.
Because this is a double-acting cylinder with fixed TPU bumper pads, it will drift and cannot hold a load on air loss. For suspended or gravity-loaded applications, install an external rod lock or pilot-operated check valve. Mounting options include LB foot, FA flange, and TC trunnion, plus CA, U, R, or CM back covers, 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 MIJ40X450-50 FAQ
At 0.5 MPa this Ø40 mm bore cylinder pushes 628.3 N and pulls 527.8 N. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa, operating between 30-800 mm/s.
An external stop screw shortens the extend stroke by up to 50 mm on-site, while the retract stroke remains full. This SKU has no magnet and cannot take CMSG, DMSG, or EMSG sensors; you must specify the -S variant 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 MIJ40X450-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.