Airtac MIJ Adjustable Cylinder MIJ20X125-50S
The AirTAC Airtac MIJ Adjustable Cylinder MIJ20X125-50S is a genuine double acting, adjustable stroke round-body mini air cylinder with a Ø20mm bore and 125mm stroke, 1/8" 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.
- BoreØ20 mm
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- 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 MIJ20X125-50S
Dial in a precise forward end position on-site with the AirTAC MIJ20X125-50S, a round-body stainless steel mini cylinder that lets an external stop screw shorten the extend stroke by up to 50 mm. This double-acting actuator delivers 157 N of push force at 0.5 MPa, yielding a safe working load of roughly 94 N or a vertical lift of about 8 kg with a 2:1 margin.
Built to the ISO 6432 mounting interface, it drops directly into standard mini brackets and clevises. The riveted stainless barrel and Ø8 mm rod resist mild corrosion and washdown environments. Fitted with a piston magnet (-S), it supports CMSG, DMSG and EMSG sensors, while fixed TPU bumper pads absorb the stroke end impact.
Airtac MIJ Adjustable Cylinder MIJ20X125-50S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ20X125-50S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MIJ20X125-50S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MIJ Adjustable Cylinder MIJ20X125-50S Is Used
Diverting Gate Tensioning
Fine-tune the extend stroke up to 50 mm to set the exact contact pressure on a diverting gate, using the 157 N push force to reliably redirect light packages without crushing them.
Variable Depth Carton Stops
Adjust the forward stop on the fly to accommodate different carton depths on a single line, leveraging the 8 kg vertical lift capacity to hold flaps or lightweight guides in place.
Sensor Probe Positioning
Dial in the exact extension distance for a testing probe approaching delicate electronics, relying on the built-in magnet for CMSG/DMSG end-of-stroke confirmation.
Is the Airtac MIJ Adjustable Cylinder MIJ20X125-50S the Right Cylinder?
When sizing this 20 mm bore unit, stepping down to an MIJ16X75-30 drops the 0.5 MPa push force to 100.5 N, whereas moving up to an MIJ25X125-50S raises it to 245.3 N. The 50 mm adjustment window is ideal for taking up mechanical tolerances during setup or covering multiple stop positions from a single part number, without swapping cylinders. Remember that the stop screw only trims the extend end; it is not a mid-stroke lock, so the piston will drift on air loss. For a held load, specify an external rod lock or pilot check valve. Mount via LB foot, FA flange or TC trunnion (the SDB pivot block is not offered 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 MIJ20X125-50S FAQ
This 20 mm bore cylinder has a 1/8" port and an M8x1.25 male rod thread. At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa.
An external stop screw shortens the extend stroke by up to 50 mm (usable extend 75-125 mm), but retract remains full and the screw is not a mid-stroke lock. The -S suffix means it has a built-in piston magnet for CMSG, DMSG or EMSG sensors. The stainless build resists mild corrosion.
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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