Airtac MSF Single Acting Mini Cylinder MSF25X75SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X75SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 75mm 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.
- BoreØ25 mm
- Stroke75 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF25X75SU
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. The MSF25X75SU is a single-acting push type: compressed air entering the 1/8" port extends the Ø10 mm rod, while an internal spring retracts it. Because you only plumb one port, valving is simpler, and the cylinder fails to its retracted rest position on air loss.
The quoted thrust is already net of the return spring, which demands a 0.2 MPa minimum pressure to overcome. For sizing, expect a safe working load of about 116 N, or a vertical lift capacity near 9.8 kg with a 2:1 margin. This 75 mm stroke unit includes a flat-end U back cover and a built-in magnet (-S) for CMSG, DMSG or EMSG position switches.
Airtac MSF Single Acting Mini Cylinder MSF25X75SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X75SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 75 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.
Theoretical Output Force (Ø25mm)
| 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.
Model Code: Airtac MSF Single Acting Mini Cylinder MSF25X75SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×75 | 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 MSF25X75SU Is Used
Part Ejection
Uses the 192.8 N push force to eject machined components from a fixture, with the internal spring safely pulling the rod back on air release.
Spring-Return Clamping
Secures light workpieces during machining; the single-acting design ensures the clamp retracts automatically if the air supply drops.
Lane Gating
Sorts items on a line by extending a 75 mm gate stroke, relying on the U flat-end cover and stainless barrel for durable, compact routing.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X75SU the Right Cylinder?
If 192.8 N at 0.5 MPa is too much, step down to the MSF20 bore offering 117.5 N; if you need more extension force, the MSF32 provides 323.3 N at the same 0.5 MPa. This 25 mm bore is ideal for spring-return clamping, ejecting or gating where air loss safely retracts the load. Keep operating pressure between 0.2 and 1.0 MPa. Mount via LB foot, FA flange, SDB pivot or TC trunnion, and pair the -S magnet with CMSG/DMSG/EMSG sensors.
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 MSF25X75SU FAQ
It generates 192.8 N of thrust at 0.5 MPa and 290.9 N at 0.7 MPa. These figures are net of the internal spring. Operating pressure must be 0.2 to 1.0 MPa, as a minimum of 0.2 MPa is required to overcome the return spring.
No. On air loss the spring drives the rod to the retracted position; it cannot hold an arbitrary mid-stroke load. For position holding you need a double-acting MF cylinder with an external rod lock. This unit uses fixed TPU bumper pads for end-of-stroke deceleration.
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