Airtac MSF Single Acting Mini Cylinder MSF20X80SCA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X80SCA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 80mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel for mildly corrosive environments. For the same bore and stroke it is shorter than an ISO 6432 cylinder, saving mounting space.
- BoreØ20 mm
- Stroke80 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF20X80SCA
Delivering 117.5 N of push force at 0.5 MPa, this AirTAC MSF20X80SCA mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only plumb one 1/8" port, simplifying valve requirements while ensuring the piston fails to the retracted position on air loss. The SUS304 stainless round body with riveted aluminium covers is notably shorter than an ISO 6432 unit of the same 20 mm bore and 80 mm stroke, saving valuable machine space.
The quoted output is already net of the return spring, meaning the true thrust is available for work, though a minimum 0.2 MPa operating pressure is required to overcome that spring. For practical sizing, a safe working load is approximately 71 N (about 60% of the 0.5 MPa rating), which equates to securely clamping or vertically lifting around 6 kg with a 2:1 safety margin. This specific SKU includes a built-in magnet for position sensing and a CA rear pivot cover.
Airtac MSF Single Acting Mini Cylinder MSF20X80SCA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X80SCA |
|---|---|
| Series | MSF JIS 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 150 mm |
Specifications follow the official AirTAC MF/MFC (JIS-standard) datasheet. Barrel: SUS304 stainless steel; covers: aluminum alloy (round-body, riveted rolling-packed construction). Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø20mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 117.5 N |
| 0.7 MPa | 181.3 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 MSF Single Acting Mini Cylinder MSF20X80SCA
| MSF | JIS-standard 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. |
MF-family variants: MF / MFC (double acting ±cushion), MSF / MTF (single acting push / pull), MFD / MFCD (double rod ±cushion), MFJ / MFCJ (adjustable stroke ±cushion). Back covers CA / U / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MSF Single Acting Mini Cylinder MSF20X80SCA Is Used
Light-Duty Clamping
Provides 71 N of safe working load to hold lightweight plastic or cardboard components securely in place during a machining or gluing process.
Part Ejection
Uses the 117.5 N thrust to push finished small parts off a conveyor belt, with the spring ensuring the rod retracts clear of the line when idle.
Vertical Lift Gates
Raises a lightweight 6 kg sorting flap or diverter gate using air pressure, relying on the internal spring to pull the gate back down on air release.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X80SCA the Right Cylinder?
When sizing this 20 mm bore unit, verify if the 117.5 N push at 0.5 MPa is sufficient; if your application requires more force, step up to the MSF25 which provides 192.8 N at the same pressure. As this is the smallest bore in the MSF range, there is no smaller model to drop down to. Choose this single-acting spring-return configuration for tasks like clamping, ejecting, or gating where the load must return to a safe rest state unpowered, and remember it cannot be loaded on the return stroke.
Ensure your air supply stays at or above the 0.2 MPa floor, otherwise the spring will overpower the air and prevent extension. This MSF20X80SCA variant features a CA back cover for pivot mounting and includes the -S magnet, allowing you to fit CMSG, DMSG, or EMSG sensors for end-of-stroke confirmation.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/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/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MSF Single Acting Mini Cylinder MSF20X80SCA FAQ
This 20 mm bore cylinder generates a net push force of 117.5 N at 0.5 MPa and 181.3 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the return spring, with a maximum pressure limit of 1.0 MPa.
No, the spring constantly drives the rod to the fully retracted position when air is removed, so it cannot hold a mid-stroke load. For mid-stroke holding, a double-acting MF cylinder with an external rod lock is required. This unit's -S magnet allows CMSG/DMSG/EMSG sensors to detect end positions.
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