
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X50SCA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 50mm 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 192.8 N of push force at 0.5 MPa (290.9 N at 0.7 MPa), this JIS-standard round-body mini cylinder uses a SUS304 stainless barrel and riveted aluminium covers to resist mild washdown. Because it is a single-acting push type, compressed air entering the 1/8" port extends the Ø10 mm rod, while an internal spring retracts it, meaning you only plumb and valve one line. The body is notably shorter than an ISO 6432 cylinder for the same 25 mm bore and 50 mm stroke, saving valuable mounting length.
The quoted thrust is already net of the return spring, which dictates a 0.2 MPa minimum operating pressure to overcome the spring bias. For sizing, a safe working load is about 116 N (roughly 60% of the 0.5 MPa figure), or it can vertically lift around 9.8 kg with a 2:1 safety margin. This specific SKU includes a built-in piston magnet (-S) for CMSG, DMSG or EMSG switches, and features a CA rear pivot cover for clevis mounting.
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X50SCA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 | 192.8 N |
| 0.7 MPa | 290.9 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). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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.
Uses 192.8 N of push at 0.5 MPa to hold parts during machining, with the internal spring automatically releasing the clamp when air is removed.
Extends 50 mm to deflect items off a belt; the single-air-line design simplifies valve requirements while the CA pivot absorbs side loads.
Raises lightweight bins or trays up to 9.8 kg with a 2:1 safety margin, relying on the spring to safely lower the load if pressure drops.
When sizing this 25 mm bore, step down to the MSF20 if 117.5 N at 0.5 MPa is sufficient, or step up to the MSF32 if you need 323.3 N. Single-acting spring-return cylinders excel in simple clamping, ejecting, or gating tasks where the rod must return to a safe position on air loss. Ensure your supply stays at or above the 0.2 MPa floor, otherwise the spring wins and the rod will not extend. Pair this with LB foot, FA flange, SDB pivot, or TC trunnion mounts, and utilize the -S magnet with CMSG/DMSG/EMSG sensors for position confirmation.
Quick checklist
This 25 mm bore cylinder provides a net push force of 192.8 N at 0.5 MPa and 290.9 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring, and uses a 1/8" air port with an M10x1.25 male rod thread.
Air extends the rod, while the internal spring retracts it upon air loss, driving the rod to a safe retracted position; it cannot hold a mid-stroke load. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG switches, and the CA back cover provides a rear pivot point.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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