Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø20mm bore and 75mm 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
- Stroke75 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR
Delivering a net push of 119.5 N at 0.5 MPa, this AirTAC stainless-steel round-body mini cylinder uses compressed air to extend and an internal spring to retract. Because it is single-acting, you only need one 1/8" air line to operate it, which conserves energy and ensures the rod pulls back to a safe retracted rest position if air pressure drops. The Ø8 mm piston rod features an M8x1.25 male thread, and the stainless construction resists mild corrosion in washdown environments.
Built to the ISO 6432 mounting interface, the Ø20 mm body drops directly into standard mini brackets and clevises. It requires at least 0.2 MPa of input pressure to overcome the return spring before the rod can move. For practical sizing, the 119.5 N output translates to a safe working load of about 72 N, meaning it can vertically lift or clamp roughly 6.1 kg with a 2:1 safety margin. An R axial-in rear cover port keeps the plumbing tidy, and choosing the -S magnet variant enables CMSG, DMSG or EMSG sensors.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR |
|---|---|
| Series | MSI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 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 (spring return) |
|---|---|
| 0.5 MPa | 119.5 N |
| 0.7 MPa | 182.3 N |
Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR
| MSI | ISO 6432 round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -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 MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR Is Used
Light-Duty Part Ejection
Uses the 119.5 N extend force to push machined small parts out of a fixture, with the spring ensuring a fail-safe retract away from the workspace when air is removed.
Packaging Flap Folding
Extends to fold cardboard flaps on a 75 mm stroke before springing back to clear the packaging line for the next box, requiring only a single 1/8" air valve port.
Pneumatic Pin Stopping
Acts as a spring-return stop pin on a conveyor, extending to halt a 6 kg product tray and automatically retracting to release it if the air supply is shut off.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR the Right Cylinder?
When sizing this unit, compare its 119.5 N push force at 0.5 MPa against adjacent bores: stepping down to a Ø16 yields 74.9 N, while moving up to a Ø25 provides 190.3 N. Remember that the internal return spring dictates a minimum 0.2 MPa operating pressure; anything lower will not generate enough force to extend the rod. The 75 mm stroke sits safely within the 80 mm standard travel limit for this bore, avoiding made-to-order delays.
Mounting options include LB foot brackets, FA flanges, SDB pivot blocks and TC trunnions, all conforming to the ISO 6432 dimensions. If your application requires position sensing, you must select the -S magnet option to mount CMSG, DMSG or EMSG switches; a standard SKU without the S suffix cannot accept a sensor. Fixed TPU bumpers decelerate the stroke ends, but they will not hold a mid-stroke load on air loss.
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 0.2 – 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 MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SR FAQ
It provides a net push force of 119.5 N at 0.5 MPa and 182.3 N at 0.7 MPa. Because it is a single-acting spring-return cylinder, it requires a minimum of 0.2 MPa to overcome the internal spring and extend the rod. When air is released, the spring drives the rod back to its retracted rest state.
Only if you specify the -S variant, which includes a built-in piston magnet for CMSG, DMSG or EMSG switches. A model without the S suffix cannot accept a sensor. The stainless steel round-body construction uses a 1/8" port and fixed TPU bumpers, not adjustable air cushions.
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