Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SU
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SU 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 MSI20X75SU
Delivering 119.5 N of push force at 0.5 MPa, this stainless-steel round-body mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is a single-acting design, you only need one 1/8" air line, saving plumbing and energy. The return spring acts as a fail-safe, driving the rod back to its retracted rest state if air pressure drops. This Ø20 mm bore features an M8x1.25 male rod thread, a U-style 90-degree rear cover, and a built-in magnet (-S) for position sensing.
The stainless barrel and rod resist mild corrosion and washdown environments. With a practical safe working load of roughly 72 N, it can clamp or vertically lift about 6.1 kg with a 2:1 safety margin. It uses fixed TPU bumper pads to soften stroke ends and conforms to the ISO 6432 mounting interface for easy bracket interchangeability. The 75 mm stroke falls within the standard 80 mm spring limit for this bore size.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SU Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SU |
|---|---|
| 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 MSI20X75SU
| 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 MSI20X75SU Is Used
Part Ejection
Pushes finished parts out of a machining fixture with 119.5 N of force, using the spring return to automatically reset the ejector pin when air is removed.
Flow Gating
Acts as a spring-return diverter gate on a packaging line, extending to block or route items and safely retracting to clear the conveyor path during an air loss.
Carton Clamping
Provides a safe 72 N holding force to secure light cardboard cartons during a labeling process, releasing instantly when the 1/8" air supply is cut.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X75SU the Right Cylinder?
When sizing by push force, this 119.5 N @0.5 MPa bore sits between the smaller Ø16 (74.9 N) and the larger Ø25 (190.3 N). Choose the Ø20 if the smaller bore cannot overcome your friction but the larger provides unnecessary force. Remember the cylinder requires at least 0.2 MPa of input pressure to beat the return spring; below that, the rod will not extend. The 75 mm stroke is a standard length, well under the 80 mm spring travel limit for Ø16-Ø40 bores.
Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion, alongside the standard U 90-degree back cover. The included -S magnet allows direct mounting of CMSG, DMSG, or EMSG sensors for end-of-stroke confirmation. Speeds range from 50-800 mm/s depending on load and flow control.
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 MSI20X75SU FAQ
It provides a push force of 119.5 N at 0.5 MPa and 182.3 N at 0.7 MPa. Because it is spring-return, 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 the retracted rest position.
The -S suffix means the piston has a built-in magnet for use with CMSG, DMSG, or EMSG position sensors. As a single-acting push cylinder, it only needs one 1/8" air line to extend, simplifying valve requirements while the stainless steel construction provides mild washdown resistance.
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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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