Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SR
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SR is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø20mm bore and 80mm 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
- Stroke80 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 MSI20X80SR
Delivering 119.5 N of push force at 0.5 MPa, this AirTAC stainless-steel mini cylinder uses compressed air to extend and an internal spring to retract. It is a single-acting, normally-closed design that requires just one 1/8 inch air line, saving plumbing and ensuring the rod safely pulls back if air pressure drops. The Ø8 mm piston rod features an M8x1.25 male thread, and the R back cover provides a convenient axial port orientation.
Because the return spring constantly fights the air pressure, the listed force is already net of that spring load, yielding a safe working load of roughly 72 N. In vertical lifting scenarios, that equates to hoisting about 6.1 kg with a 2:1 safety margin. The riveted round-body construction resists mild corrosion and washdown, and the built-in magnet (-S) allows tracking via CMSG, DMSG or EMSG sensors.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SR Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SR |
|---|---|
| Series | MSI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 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 MSI20X80SR
| MSI | ISO 6432 round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 MSI20X80SR Is Used
Part Ejection
Pushes finished machined components out of a fixture with 119.5 N, relying on the spring to safely retract the pin when air is removed.
Carton Gating
Acts as a spring-return stop gate on a packaging conveyor, extending to block boxes and instantly retracting to release them.
Light Clamping
Provides a safe holding force of about 72 N for light woodworking or assembly tasks, automatically unclamping on air loss.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SR the Right Cylinder?
When sizing by push force, this 20 mm bore yields 119.5 N at 0.5 MPa. If you need less force, the Ø16 bore provides 74.9 N; if your application requires more, stepping up to the Ø25 bore offers 190.3 N. Remember that a minimum of 0.2 MPa is required to overcome the internal spring, and the 80 mm travel represents the maximum standard spring stroke for this bore size.
Mounting is highly flexible using the ISO 6432 mini-cylinder interface, allowing easy drops into standard LB foot brackets, FA flanges, SDB pivot blocks, or TC trunnions. The fixed TPU bumper pads soften the stroke ends, but they do not lock the load mid-stroke.
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 MSI20X80SR FAQ
It generates 119.5 N of push force at 0.5 MPa and 182.3 N at 0.7 MPa. A minimum of 0.2 MPa is required to overcome the internal return spring. When air is released, the spring drives the rod back to its normally retracted rest state.
No, the fixed TPU bumpers only soften the stroke ends and the spring returns the rod to rest on air loss; it cannot hold an intermediate load. However, the -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG position sensors.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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