Airtac MSF Single Acting Mini Cylinder MSF25X25U
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X25U is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 25mm 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
- Stroke25 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 MSF25X25U
Delivering 192.8 N of push force at 0.5 MPa, this JIS-standard round-body mini cylinder uses a SUS304 stainless barrel and riveted aluminium covers to resist mild washdown. The MSF25X25U is a single-acting push type: compressed air entering the 1/8 inch port extends the 10 mm rod, while an internal spring retracts it. Because the spring handles the return, you only plumb one air line, and the cylinder fails safely to the retracted position on air loss. This U-suffix model features a flat-end rear cover.
The quoted push force is already net of the spring, meaning the rod cannot be loaded on the return stroke. For sizing, this translates to a safe working load of roughly 116 N, or a vertical lift capacity of about 9.8 kg with a 2:1 safety margin. The riveted construction is shorter than an ISO 6432 cylinder of the same 25 mm bore and 25 mm stroke, saving valuable mounting length. Note that this specific SKU lacks a magnet, so it cannot accept position sensors.
Airtac MSF Single Acting Mini Cylinder MSF25X25U Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X25U |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 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 MSF25X25U
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×25 | 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 MSF25X25U Is Used
Part Ejection
Uses the 192.8 N push force to eject machined components from a fixture, relying on the spring to reset the plunger between cycles.
Light Clamping
Secures light workpieces during assembly with a safe working load of roughly 116 N, automatically releasing on air loss.
Gate Diverting
Acts as a compact 25 mm stroke diverter gate on a packaging line, fitting into tight spaces due to the short JIS body.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X25U the Right Cylinder?
When sizing this 25 mm bore, compare it directly with the MSF20, which provides 117.5 N of push at 0.5 MPa, or step up to the MSF32, which yields 323.3 N at the same pressure. Choose this single-acting spring-return model for simple clamping, ejecting, or gating tasks where the load only needs to be pushed outward and the return stroke is unloaded. You must supply at least 0.2 MPa of operating pressure to overcome the internal spring. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets. If your application requires position feedback, select the -S magnet variant to enable CMSG, DMSG, or 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 MSF25X25U FAQ
The single-acting push force is 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 return spring, with a maximum of 1.0 MPa and a proof pressure of 1.5 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. The cylinder features a SUS304 stainless barrel and fixed TPU bumper pads for end-of-stroke deceleration.
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