Airtac MIJ Adjustable Cylinder MIJ20X120-20S
The AirTAC Airtac MIJ Adjustable Cylinder MIJ20X120-20S 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 MIJ20X120-20S
Dial in a precise forward end position on-site with the AirTAC MIJ20X120-20S, 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 20 mm, allowing one part number to cover several stop distances without swapping hardware. The retract stroke remains full length.
Delivering 157 N of push force at 0.5 MPa, this Ø20 bore unit handles a safe working load of roughly 94 N, or about an 8 kg vertical lift with a 2:1 margin. The riveted stainless barrel and rod resist mild corrosion and washdown environments. It uses the ISO 6432 mounting interface for standard mini brackets, includes a piston magnet for CMSG/DMSG/EMSG sensors, and ports via a 1/8" thread.
Airtac MIJ Adjustable Cylinder MIJ20X120-20S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ20X120-20S |
|---|---|
| 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 MIJ20X120-20S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -20 | 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 MIJ20X120-20S Is Used
Tolerance Take-Up Gauging
Use the 20 mm extend adjustment to compensate for part variance in a gauging station, applying the 157 N push force to seat components gently without custom shims.
Staged Feed Diverter
Trim the forward stroke on-site to push varying box sizes onto a secondary conveyor line, using the 8 kg vertical lift capacity to reposition light goods accurately.
Adjustable Pressing Stop
Fine-tune the end position for a light-duty pressing or marking task, ensuring consistent depth across tooling changes while relying on the fixed TPU bumpers for end deceleration.
Is the Airtac MIJ Adjustable Cylinder MIJ20X120-20S the Right Cylinder?
When sizing this actuator, step down to the Ø16 MIJ if your load requires less than 100 N of push force at 0.5 MPa, or step up to the Ø25 MIJ (245 N push) if you need to overcome heavier friction. The 20 mm adjustment window on this model is ideal for taking up mechanical tolerances during setup or staging feeds without machining new hard stops.
Remember that the stop screw sets the end position but does not lock the rod mid-stroke; the piston will drift if air pressure is lost, so add an external rod lock or pilot check valve for suspended loads. For mounting, select LB foot, FA flange, or TC trunnion brackets, as the SDB pivot block is not offered on this adjustable variant. Fixed TPU bumper pads decelerate the stroke ends across the 30-800 mm/s speed range.
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 MIJ20X120-20S FAQ
This double-acting cylinder delivers 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. The air port size is 1/8".
An external stop screw shortens the extend stroke by up to 20 mm on-site, but the retract stroke remains full length. The screw is not a mid-stroke lock. The -S suffix indicates a built-in piston magnet for use with CMSG, DMSG, or EMSG position sensors.
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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