Airtac MSF Single Acting Mini Cylinder MSF25X125SCA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X125SCA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 125mm 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
- Stroke125 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 MSF25X125SCA
Delivering 192.8 N of push force at 0.5 MPa, this JIS-standard round-body mini cylinder uses air to extend the rod and an internal spring to retract it. Because it is single-acting, you only pipe and valve a single 1/8" port, which simplifies automation. The SUS304 stainless steel barrel shrinks mounting length compared to an ISO 6432 unit and resists mild washdown corrosion.
The quoted output is already net of the return spring, yielding a safe working load of roughly 116 N or a 9.8 kg vertical lift with a 2:1 margin. This MSF25X125SCA configuration includes a CA rear pivot cover and a built-in piston magnet (-S) for CMSG, DMSG, or EMSG position sensing. Fixed TPU bumper pads absorb end-of-stroke impacts across the 50-800 mm/s speed range.
Airtac MSF Single Acting Mini Cylinder MSF25X125SCA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X125SCA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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 MSF25X125SCA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×125 | 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 MSF25X125SCA Is Used
Spring-Return Clamping
Provides 192.8 N of thrust at 0.5 MPa to secure parts for machining, automatically releasing to the retracted position when air pressure is removed.
Package Ejector Gate
Uses the 125 mm stroke to push cartons off a conveyor line, relying on the internal spring to safely withdraw the rod between cycles.
Vertical Lift Stop
Raises a lightweight 9.8 kg load locator with a 2:1 safety margin, defaulting to the lowered retracted state during an air loss event.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X125SCA the Right Cylinder?
When sizing this 25 mm bore, verify your motion profile fits the single-acting push paradigm, such as spring-return clamping or ejecting, where the rod cannot be loaded on the return stroke. If 192.8 N at 0.5 MPa is excessive, step down to the MSF20 which provides 117.5 N; if you need more thrust, the MSF32 offers 323.3 N. Supply pressure must stay at or above the 0.2 MPa floor to overcome the spring, with a 1.0 MPa maximum. The integrated CA pivot cover suits trunnion-style mounting, while the -S magnet enables electronic or reed switch tracking.
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 MSF25X125SCA FAQ
The single-acting push force is 192.8 N at 0.5 MPa and 290.9 N at 0.7 MPa. These figures are net of the return spring. Operating pressure must be between 0.2 and 1.0 MPa, as a minimum of 0.2 MPa is required to overcome the spring and extend the rod.
No, the spring drives the rod to the fully retracted position on air loss; it cannot hold an arbitrary mid-stroke load and is not a controllable brake. For a held mid-stroke load, use a double-acting MF cylinder with an external rod lock.
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