Airtac MIJ Adjustable Cylinder MIJ20X45-20S
The AirTAC Airtac MIJ Adjustable Cylinder MIJ20X45-20S is a genuine double acting, adjustable stroke round-body mini air cylinder with a Ø20mm bore and 45mm 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
- Stroke45 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 MIJ20X45-20S
Dial in your forward end position on-site with the AirTAC MIJ20X45-20S, 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, providing a usable forward range of 25 to 45 mm without swapping parts. The retract stroke remains full length. Delivering 157 N of push force at 0.5 MPa, it easily handles a safe working load of roughly 94 N, or about 8 kg of vertical lift with a 2:1 margin.
The Ø20 mm bore conforms to ISO 6432 mounting interface dimensions, dropping directly into standard mini brackets and clevises. This model includes a built-in piston magnet (-S) for direct mounting of CMSG, DMSG, or EMSG sensors. The stainless barrel and rod resist mild corrosion and washdown environments. Air connects via a 1/8" port, and fixed TPU bumper pads decelerate the piston at the stroke ends.
Airtac MIJ Adjustable Cylinder MIJ20X45-20S Technical Specifications
| Model | Airtac MIJ Adjustable Cylinder MIJ20X45-20S |
|---|---|
| Series | MIJ ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 45 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 MIJ20X45-20S
| MIJ | ISO 6432 round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×45 | 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 MIJ20X45-20S Is Used
Adjustable Part Ejection
Use the 20 mm extend stop to tune the ejection distance on a 157 N press line, accommodating different part widths without changing the cylinder.
Staged Transfer Stops
Deploy the 8 kg vertical lift capacity to halt passing cartons on a conveyor, fine-tuning the stopper height on-site to match varying package profiles.
Tolerance Take-Up Jig
Absorb assembly tolerances in a clamping fixture by dialing the forward stroke back from 45 mm, ensuring consistent 94 N clamping force without bottoming out.
Is the Airtac MIJ Adjustable Cylinder MIJ20X45-20S the Right Cylinder?
When sizing this unit, compare it against adjacent bores: the Ø16 MIJ provides 100.5 N push at 0.5 MPa, while the Ø25 MIJ steps up to 245.3 N. The Ø20 hits a solid middle ground at 157 N. The 20 mm adjustment window is highly useful for taking up mechanical tolerances or staggering part ejection across multiple stations. Remember that the stop screw only sets the forward end position; it is not a mid-stroke lock. If your application must hold a load during air loss, add an external rod lock or pilot check valve.
For mounting, you can utilize LB foot brackets, FA flanges, or TC trunnions, but note that the SDB pivot block is not available on this adjustable variant. Back cover options include CA, U, R, and CM. Because this SKU features the -S magnet, you can directly fit CMSG, DMSG, or EMSG switches for position sensing.
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 MIJ20X45-20S FAQ
This double-acting cylinder uses a 1/8" air port and an M8x1.25 male rod thread. At 0.5 MPa it generates 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.
The external stop screw shortens the extend stroke by up to 20 mm on-site, giving a usable forward range of 25 to 45 mm; the retract stroke remains full. The -S suffix indicates a built-in piston magnet, allowing you to mount CMSG, DMSG, or EMSG sensors directly for position detection.
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.
Request a Quote for Airtac MIJ Adjustable Cylinder MIJ20X45-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.