
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X15SCA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 15mm 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.
Delivering a net push force of 117.5 N at 0.5 MPa, this AirTAC MSF20X15SCA mini cylinder uses compressed air to extend the rod while an internal spring handles the retraction. Because it is single-acting, you only need to plumb one 1/8" port, simplifying valve requirements and ensuring the rod fails safely to the retracted position on air loss. The 15 mm stroke and CA pivot rear cover make it highly effective for short clamping or ejecting motions.
Built with a JIS-standard round body, the SUS304 stainless steel barrel and riveted aluminium covers yield a shorter overall length than a comparable ISO 6432 unit, conserving valuable machine space while resisting mild washdown corrosion. The quoted push force is already net of the return spring, providing a safe working load of roughly 71 N or a vertical lift capacity of about 6 kg with a 2:1 margin. End-of-stroke deceleration relies on fixed TPU bumper pads rather than an adjustable air cushion, and the built-in -S magnet supports CMSG, DMSG, or EMSG position sensing.
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X15SCA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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.
| 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.
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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.
Applies 117.5 N of push force at 0.5 MPa to hold light workpieces securely in a machining fixture, using the spring return to release the part automatically.
Pushes small cartons off a conveyor belt with a 15 mm stroke, relying on the fail-safe retracted rest position to avoid obstructing the line during downtime.
Actuates a lightweight diverter gate using the CA pivot mount, with the SUS304 stainless barrel providing reliable performance in mildly humid environments.
When sizing this 20 mm bore unit, verify your motion profile requires a push-only action with spring retraction, as the rod cannot be loaded on the return stroke. If the 117.5 N push at 0.5 MPa is insufficient, step up to the MSF25 which provides 192.8 N at the same pressure. Since 20 mm is the smallest available MSF bore, there is no smaller option to drop down to. You must maintain at least 0.2 MPa operating pressure to overcome the internal spring; below that threshold, the spring wins and the rod will not extend. Mounting is straightforward using the CA pivot back cover, and the included -S piston magnet allows for direct sensor integration.
Quick checklist
This single-acting push cylinder generates 117.5 N of force 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 internal return spring, with a maximum pressure of 1.0 MPa.
No, on air loss the internal spring drives the rod back to its fully retracted rest position; it cannot hold a mid-stroke load. For mid-stroke holding, a double-acting MF cylinder with an external rod lock is required.
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