Airtac MIJ Adjustable Cylinder MIJ20X120-30S
The AirTAC Airtac MIJ Adjustable Cylinder MIJ20X120-30S is a genuine double acting, adjustable stroke round-body mini air cylinder with a Ø20mm bore and 120mm 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
- Stroke120 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 MIJ20X120-30S
Dial in a precise forward end position on-site with the AirTAC MIJ20X120-30S, a round-body stainless steel mini cylinder featuring a 30 mm extend-stroke adjustment window. An external stop screw lets you shorten the forward stroke from 120 mm down to 90 mm, absorbing setup tolerances without changing the cylinder. Retract remains full length. Built with a riveted stainless barrel and rod, it handles mild washdowns and corrosion risks.
This double-acting ISO 6432 unit delivers 157 N of push force at 0.5 MPa, yielding a safe working load of about 94 N or a 2:1 vertical lift capacity near 8 kg. The 1/8" port and M8x1.25 male rod thread drop into standard mini brackets. Because this SKU carries the -S suffix, a built-in piston magnet supports CMSG, DMSG, or EMSG switches for position sensing.
Airtac MIJ Adjustable Cylinder MIJ20X120-30S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ20X120-30S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 120 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 MIJ20X120-30S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | 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 MIJ20X120-30S Is Used
Staged Part Pushing
Use the 30 mm extend stop to push varied carton sizes onto a belt at different points, leveraging the 157 N push force without swapping actuators.
Fill Height Adjustment
Fine-tune the forward stroke down to 90 mm to press caps on different bottle heights, using the safe 94 N working load to avoid crushing containers.
Sensor-Verified Clamping
Pair the -S magnet with a DMSG switch to confirm clamp positions, dialing in the end stop to secure parts gently during machining changeovers.
Is the Airtac MIJ Adjustable Cylinder MIJ20X120-30S the Right Cylinder?
When sizing this 20 mm bore, step down to the MIJ16 (100.5 N push @0.5 MPa) for lighter loads, or up to the MIJ25 (245.3 N push @0.5 MPa) if you need more thrust. The 30 mm external adjuster is ideal for changeover jobs where one part number must cover several stopping points. Mount using LB foot, FA flange, or TC trunnion brackets—note that SDB pivot blocks are not offered on this adjustable variant.
Remember that the stop screw only trims the extend end point; it is not a mid-stroke lock. The fixed TPU bumper pads decelerate the stroke end, but the piston will drift on air loss. For suspended loads, specify an external rod lock or pilot check valve.
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 MIJ20X120-30S FAQ
This 20 mm bore cylinder uses 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 yields 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 30 mm on-site, setting the forward end position without affecting the full retract. The -S suffix means a piston magnet is built-in for CMSG, DMSG, or EMSG sensors. The screw is not a mid-stroke lock.
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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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