Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25SCA
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25SCA is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MSI20X25SCA
Delivering a net push of 119.5 N 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 corrosion, making it suitable for washdown environments. Because it is single-acting, you only need one 1/8" air line, which saves plumbing and ensures the rod returns to its retracted rest position if air pressure drops.
The built-in magnet (-S) allows tracking with CMSG, DMSG or EMSG sensors, while the CA back cover provides a pivot mount. For sizing, a practical safe working load is about 72 N, or roughly 6.1 kg of vertical lift with a 2:1 margin. It meets the ISO 6432 mounting interface for bores Ø8-Ø25, dropping into standard mini brackets. Note that fixed TPU bumpers soften the stroke end but do not lock a mid-stroke load.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25SCA Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25SCA |
|---|---|
| Series | MSI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MSI20X25SCA
| MSI | ISO 6432 round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MSI20X25SCA Is Used
Light-Duty Clamping
Provides 119.5 N of push force to secure light workpieces during machining, releasing automatically to the retracted state on air loss.
Package Diverter Gate
Actuates a routing flap on a conveyor line; the spring return ensures the gate snaps shut safely if the air supply is interrupted.
Parts Ejector
Pushes finished components out of a fixture with a safe working load of 72 N, relying on the internal spring to withdraw the pin between cycles.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X25SCA the Right Cylinder?
Size this unit by its push force: the Ø20 bore yields 119.5 N at 0.5 MPa, sitting comfortably above the Ø16 bore at 74.9 N and below the Ø25 bore at 190.3 N. You must supply at least 0.2 MPa to overcome the return spring, or the rod will not extend. The 25 mm stroke is well within the 80 mm spring limit for this bore. Use the CA pivot cover for angular movement, and select a standard ISO 6432 bracket for fixed mounts.
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 MSI20X25SCA FAQ
It delivers a push force of 119.5 N at 0.5 MPa and 182.3 N at 0.7 MPa. You must apply at least 0.2 MPa to overcome the internal spring; when air is released, the spring drives the rod back to its retracted rest position.
Yes, the -S suffix indicates a built-in piston magnet, allowing you to mount CMSG, DMSG or EMSG sensors for stroke detection. It is a single-acting push cylinder, not double-acting, and features a stainless-steel round body with a 1/8" port.
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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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