Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X150SCA
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X150SCA is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø20mm bore and 150mm 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
- Stroke150 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 MSI20X150SCA
Delivering 119.5 N of net push force at 0.5 MPa, the AirTAC MSI20X150SCA 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. Because the spring naturally pulls the rod back to its resting state, this design provides a fail-safe retract on air loss and requires only a single 1/8" air line to operate. The stainless barrel and rod offer solid resistance to mild corrosion and washdown environments.
This 20 mm bore unit conforms to the ISO 6432 mounting interface, dropping easily into standard mini brackets and clevises. The 150 mm stroke is a non-standard, made-to-order length that exceeds the typical 80 mm spring-limited maximum for this bore size. For sizing context, the effective safe working load is roughly 72 N, meaning it can vertically clamp or lift about 6.1 kg with a 2:1 safety margin. An integrated piston magnet (-S) allows for CMSG, DMSG, or EMSG position sensing, while the CA back cover provides a rear pivot mount.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X150SCA Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X150SCA |
|---|---|
| Series | MSI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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 MSI20X150SCA
| MSI | ISO 6432 round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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 MSI20X150SCA Is Used
Light-Duty Part Ejection
Uses the 119.5 N push force to eject small molded parts from a fixture, relying on the spring return to clear the workspace automatically.
Pivoting Flow Gate
Actuates a lightweight diverter gate on a packaging line, safely retracting the barrier to a closed rest position if compressed air is lost.
Carton Hold-Down Clamp
Presses cardboard cartons stationary during a labeling cycle, applying a safe 72 N working load without crushing the packaging.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI20X150SCA the Right Cylinder?
When sizing by push force, this 20 mm bore generates 119.5 N at 0.5 MPa. If less force is needed, the smaller Ø16 bore provides 74.9 N; if more is required, stepping up to the Ø25 bore yields 190.3 N. Remember that a minimum of 0.2 MPa operating pressure is necessary to overcome the internal return spring before the rod can extend. The fixed TPU bumpers decelerate the stroke ends but do not lock the load mid-travel.
Because the 150 mm stroke exceeds the standard 80 mm spring-limited travel for single-acting 20 mm cylinders, this SKU is a made-to-order configuration. It utilizes the CA rear pivot cover for clevis mounting and includes the -S magnet option for electronic or reed switch sensing. Operation is strictly push-only via the 1/8" port.
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 MSI20X150SCA FAQ
This single-acting cylinder provides a push force of 119.5 N at 0.5 MPa and 182.3 N at 0.7 MPa. 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.
No. The MSI is a single-acting push cylinder with a spring return, so it produces no pneumatic pull force. On air loss, the spring forces the rod to the fully retracted state, meaning it cannot hold an intermediate position without external mechanical means.
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