Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80R
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80R 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 MSI20X80R
Delivering 119.5 N of push force at 0.5 MPa, this AirTAC MSI20X80R is a stainless-steel, round-body mini cylinder built for single-acting push operation. Compressed air extends the Ø8 mm rod while an internal mechanical spring handles the retraction, meaning you only need a single 1/8" air line to operate it. Because the spring constantly pulls the rod back, the cylinder fails safely to its retracted rest position if air pressure drops. The listed force is already net of the spring resistance. This specific configuration uses an R axial-in rear cover and features an M8x1.25 male rod thread.
The stainless barrel and rod offer solid resistance to mild corrosion and washdown environments. Utilizing the ISO 6432 mounting interface, it drops directly into standard mini brackets and clevises. For practical sizing, the 119.5 N output translates to a safe working load of roughly 72 N, or a vertical lift capacity of about 6.1 kg when applying a 2:1 safety margin. Note that this SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without upgrading to an -S variant. Fixed TPU bumper pads soften the stroke ends.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80R Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80R |
|---|---|
| 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 MSI20X80R
| 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 MSI20X80R Is Used
Part Ejection
Uses the 119.5 N extend force to positively push machined parts out of a fixture, with the spring ensuring the rod retracts clear of the workspace on air loss.
Flow Gate Diverter
Actuates a lightweight diverter gate on a packaging line, safely returning to the closed retracted position if the pneumatic supply is interrupted.
Carton Stopper
Deploys an 80 mm stroke pin to halt cardboard cartons on a roller conveyor, absorbing impacts via fixed TPU bumpers and retracting to release the flow.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X80R the Right Cylinder?
When sizing this 20 mm bore model, compare its 119.5 N push force at 0.5 MPa against your actual load requirements. If you need less power, stepping down to the 16 mm bore yields 74.9 N of push; conversely, moving up to the 25 mm bore provides 190.3 N. Keep in mind the spring requires at least 0.2 MPa of incoming air pressure to overcome its resistance and extend the rod. This 80 mm stroke represents the maximum standard single-acting travel for this bore size. You can mount it using LB foot brackets, FA flanges, SDB pivot blocks, or TC trunnions, but remember this non-magnet SKU cannot accept position sensors.
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 MSI20X80R FAQ
It generates 119.5 N of push force at 0.5 MPa and 182.3 N at 0.7 MPa. Because it is single-acting with a return spring, it requires at least 0.2 MPa of air pressure to overcome the spring and extend. When air is released, the spring drives the rod back to the retracted rest position.
No, this specific SKU does not include a magnet. To use CMSG, DMSG, or EMSG position sensors, you must purchase the -S variant of this single-acting push cylinder. Additionally, it features fixed TPU bumpers rather than adjustable air cushions.
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