Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SU
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SU 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 MSI20X80SU
Delivering 119.5 N of push force at 0.5 MPa, this AirTAC round-body mini cylinder relies on a single air line to extend the rod while an internal spring handles retraction. The Ø20 mm bore features a stainless-steel barrel and rod for mild washdown resistance, and the U back cover provides a 90-degree port orientation for tight layouts. As a single-acting PUSH type, it fails safe to the retracted rest position on air loss.
Because the return spring consumes energy, the listed force is already net of that load. At 0.5 MPa it yields a safe working load of roughly 72 N, translating to a vertical lift of about 6.1 kg with a 2:1 margin. The 1/8" port and Ø8 mm rod with an M8x1.25 thread match standard ISO 6432 mini-cylinder mounting dimensions, and the built-in magnet (-S) supports CMSG, DMSG, or EMSG sensors.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SU Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SU |
|---|---|
| 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 MSI20X80SU
| 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 MSI20X80SU Is Used
Light-Duty Part Ejection
Uses the 119.5 N extend stroke to push machined components out of a fixture, with the spring safely retracting the rod when air is removed.
Package Divert Gate
Actuates a routing flap on a packaging line; the 80 mm travel and 6.1 kg vertical lift margin handle lightweight cardboard diversions reliably.
Pneumatic Clamping Stop
Applies hold-down pressure on small assemblies, relying on the fail-safe retract design to release the clamp instantly upon loss of air pressure.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80SU the Right Cylinder?
Size this 80 mm stroke model by its net push output. If 119.5 N at 0.5 MPa is excessive, step down to the Ø16 bore which provides 74.9 N; if more force is required, the Ø25 bore offers 190.3 N. Remember the internal spring demands at least 0.2 MPa operating pressure to extend the rod, and the 80 mm travel represents the maximum standard spring length for this bore.
Mounting is highly flexible via LB foot, FA flange, SDB pivot-block, or TC trunnion brackets. The -S suffix ensures switch readiness, while the fixed TPU bumper pads soften the stroke ends without acting as a mid-stroke load lock.
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 MSI20X80SU FAQ
It generates 119.5 N of push force at 0.5 MPa and 182.3 N at 0.7 MPa. It requires at least 0.2 MPa to overcome the internal spring and extend the rod; 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, so it cannot hold a mid-stroke load. The -S suffix denotes a built-in magnet for CMSG, DMSG, or EMSG sensors.
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1-Year Warranty
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