Airtac MIJ Adjustable Cylinder MIJ40X450-50S
The AirTAC MIJ Adjustable Cylinder MIJ40X450-50S 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 MIJ40X450-50S
Dial in your forward end position on-site with the AirTAC MIJ40X450-50S, a round-body stainless steel mini cylinder featuring a 50 mm extend-stroke adjustment window. An external stop screw lets you shorten the forward travel from its 450 mm nominal maximum down to 400 mm, absorbing setup tolerances without swapping hardware. The retract stroke remains full length. Built with a riveted stainless barrel and rod, it handles mild washdown and corrosion exposure.
Delivering substantial thrust, this 40 mm bore unit pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa. The 1/4" port and M12x1.25 male rod thread provide robust connections. Because this SKU carries the -S suffix, a built-in piston magnet enables CMSG, DMSG, or EMSG position sensing.
Airtac MIJ Adjustable Cylinder MIJ40X450-50S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ40X450-50S |
|---|---|
| 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 MIJ40X450-50S
| 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 MIJ40X450-50S Is Used
Fill Head Positioning
Lowers a fill nozzle into containers, trimming the forward stroke down to 400 mm to prevent splashback on shorter drums.
Pallet Stopper Gate
Acts as a high-force pneumatic stop on a roller conveyor, safely halting pallets up to 32 kg before retracting for line flow.
Is the Airtac MIJ Adjustable Cylinder MIJ40X450-50S the Right Cylinder?
When sizing this 40 mm bore, compare it against adjacent options. Since this is the largest standard mini size, there is no larger MIJ bore. The 50 mm extend adjustment is ideal for changeover jobs where you need one part number to cover several staged feed distances. Mount via LB foot, FA flange, or TC trunnion; note that the SDB pivot block is not offered on this adjustable variant.
Remember that the stop screw sets the end position but acts purely as a mechanical stop, not a mid-stroke lock. The cylinder relies on fixed TPU bumper pads to decelerate the stroke end and will drift if air pressure is lost. To hold a load securely during air loss, integrate an external rod lock or pilot-operated check valve into your circuit.
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 MIJ40X450-50S FAQ
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. This 40 mm bore cylinder uses a 1/4" port and a 16 mm rod with an M12x1.25 male thread.
An external stop screw shortens the extend stroke by up to 50 mm on-site, letting you set the forward end position between 400 and 450 mm; the retract stroke remains full. The -S suffix means it has a built-in piston magnet for CMSG, DMSG, or EMSG switches. Deceleration is handled by 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.
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