Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X20R
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X20R is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø20mm bore and 20mm 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
- Stroke20 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 MSI20X20R
Delivering 119.5 N of push force at 0.5 MPa, this AirTAC round-body mini cylinder uses compressed air to extend and an internal spring to retract. The stainless-steel barrel and rod resist mild washdown corrosion, while the R back cover provides an axial-in port orientation. It conforms to the ISO 6432 mounting interface, dropping directly into standard mini brackets and clevises.
Because it is single-acting, it needs just one 1/8 inch air line to operate, saving plumbing and air volume. The listed force is already net of the return spring, yielding a safe working load of about 72 N or a 2:1 vertical lift capacity near 6.1 kg. This SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors without upgrading to an -S variant.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X20R Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X20R |
|---|---|
| Series | MSI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 MSI20X20R
| MSI | ISO 6432 round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×20 | 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 MSI20X20R Is Used
Light-Duty Ejection
Pushes small molded parts out of a fixture with 119.5 N of force, relying on the spring to safely retract the rod when air is removed.
Clamping Mechanism
Holds light workpieces against a stop using the 72 N safe working load, automatically releasing the clamp on air loss.
Pneumatic Gate
Extends a 20 mm pin to halt items on a conveyor line, using a single 1/8 inch air line to conserve valve and plumbing costs.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X20R the Right Cylinder?
Size this bore by its net push output: the Ø16 delivers 74.9 N at 0.5 MPa, whereas this Ø20 provides 119.5 N, and stepping up to the Ø25 yields 190.3 N. You must supply at least 0.2 MPa of air pressure to overcome the internal spring before any extension occurs. The 20 mm stroke sits well within the 80 mm standard travel limit for this bore.
Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion styles. Because this specific configuration has no -S magnet, position sensing is unavailable on this unit.
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 MSI20X20R FAQ
It delivers 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 of air pressure to overcome the internal spring. When air is released, the spring drives the rod back to its normally retracted rest state.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors. You must select an -S variant for position sensing. It is a single-acting push cylinder, not a double-acting model, and uses fixed TPU bumper pads rather than adjustable air cushions.
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