Airtac MIJ Adjustable Cylinder MIJ8X50-30S
The AirTAC Airtac MIJ Adjustable Cylinder MIJ8X50-30S is a genuine double acting, adjustable stroke round-body mini air cylinder with a Ø8mm bore and 50mm stroke, M5×0.8 air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ8 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM4×0.7
- CushionFixed TPU bumper pads
About the Airtac MIJ Adjustable Cylinder MIJ8X50-30S
Dial in a precise forward end position on-site with the AirTAC MIJ8X50-30S, a round-body stainless-steel mini cylinder that lets you shorten the extend stroke by up to 30 mm via an external stop screw. Because the retract travel remains full, you get a usable forward range of 20-50 mm from a single part number, which is ideal for taking up setup tolerances without swapping hardware. This double-acting unit conforms to the ISO 6432 mounting interface for Ø8 bores, dropping into standard mini brackets and clevises.
Built with a stainless-steel barrel and a Ø4 mm piston rod (M4×0.7 male thread), it resists mild corrosion and washdown environments. It delivers 25.1 N of push force at 0.5 MPa, translating to a safe working load of about 15 N or a vertical lift of roughly 1.3 kg with a 2:1 margin. The included -S piston magnet supports CMSG, DMSG, and EMSG position sensing, while fixed TPU bumper pads decelerate the stroke ends. The air port is M5×0.8.
Airtac MIJ Adjustable Cylinder MIJ8X50-30S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ8X50-30S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 150 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
Theoretical Output Force (Ø8mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 25 N | 19 N |
| 0.7 MPa | 35 N | 26 N |
| Max (@1.0 MPa) | 5 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MIJ Adjustable Cylinder MIJ8X50-30S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 8 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -30 | 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 (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MIJ Adjustable Cylinder MIJ8X50-30S Is Used
Micro-actuation
Drives small delicate probes or pins in PCB testing rigs, using the 30 mm extend adjustment to dial in exact contact depth without crushing components.
Light Diverter
Pushes lightweight mail or small trays on a packaging line, relying on the 1.3 kg vertical lift capacity and fine-tuned forward stop to prevent overshoot.
Part Ejection
Ejects tiny molded plastic parts from a fixture, using the stainless build for mild corrosion resistance and the adjustable stop to handle varying part heights.
Is the Airtac MIJ Adjustable Cylinder MIJ8X50-30S the Right Cylinder?
When sizing this 8 mm bore, note that it is the smallest available option, so if your application exceeds the 25.1 N push force at 0.5 MPa, you must step up to the next size, the MIJ12, which provides 56.5 N. The external stop screw is perfect for changeover jobs where you need staged feeds or slightly different forward stops without machining new parts. Just remember the screw only trims the extend end; it is not a mid-stroke lock or brake. If your process requires the cylinder to hold a load on air loss, add an external rod lock or pilot-operated check valve, as the piston will drift. For mounting, choose LB foot, FA flange, or TC trunnion brackets (the SDB pivot block is not offered on this adjustable variant), and use the -S magnet to enable electronic or reed sensors.
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 MIJ8X50-30S FAQ
At 0.5 MPa it provides 25.1 N push and 18.8 N pull. At 0.7 MPa it provides 35.2 N push and 26.4 N pull. The theoretical maximum force is 5.1 kgf at 1.0 MPa. The air port is M5×0.8.
The external stop screw shortens the extend stroke by up to 30 mm on-site, giving a usable forward range of 20-50 mm, while retract remains full. The -S suffix means it has a built-in piston magnet for CMSG, DMSG, or EMSG sensors. The screw sets the end position but does not lock the rod mid-stroke.
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1-Year Warranty
Covers non-human-caused product damage.
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