Airtac MSF Single Acting Mini Cylinder MSF25X150SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X150SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 150mm 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
- Stroke150 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 MSF25X150SU
Delivering 192.8 N of push at 0.5 MPa (290.9 N at 0.7 MPa), this JIS-standard round-body mini cylinder uses a single air line to extend the rod, relying on an internal spring for retraction. The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments, while the U flat-end rear cover keeps the overall footprint compact. Because it is a single-acting push type, the quoted force is already net of the spring, and the rod cannot be loaded on the return stroke.
For this 25 mm bore, expect a safe working load of about 116 N (roughly 60% of the 0.5 MPa figure), which translates to a vertical lift capacity of approximately 9.8 kg with a 2:1 safety margin. The 1/8" port feeds air to extend the 10 mm rod, and the built-in magnet (-S) supports CMSG, DMSG, or EMSG position switches. Fixed TPU bumper pads absorb end-of-stroke impact across the 150 mm travel, operating at speeds of 50-800 mm/s.
Airtac MSF Single Acting Mini Cylinder MSF25X150SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X150SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 150 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 MSF25X150SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×150 | 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 MSF25X150SU Is Used
Part Ejection
Pushes finished components out of a machining fixture with 192.8 N of force at 0.5 MPa, retracting automatically via spring when air is removed.
Spring-Return Clamping
Secures light workpieces during assembly; the single-acting design ensures the clamp releases to the retracted position on air loss.
Package Gating
Acts as a 150 mm stroke diverter gate on a packaging line, extending to redirect boxes and springing back to clear the conveyor path.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X150SU the Right Cylinder?
When sizing this unit, compare it against adjacent bores: the MSF20 provides 117.5 N at 0.5 MPa, while the larger MSF32 offers 323.3 N at the same pressure. Choose this 25 mm bore when your clamp or eject application requires roughly 116 N of safe working force. Remember the 0.2 MPa pressure floor; below this threshold the return spring overcomes the air pressure and the cylinder will not extend. The -S magnet allows seamless integration with CMSG, DMSG, or EMSG sensors, and you can mount it using LB foot, FA flange, SDB pivot, or TC trunnion hardware.
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 MSF25X150SU FAQ
The single-acting push force is 192.8 N at 0.5 MPa and 290.9 N at 0.7 MPa. Because it is spring-return, the force is net of the spring, and it requires a minimum operating pressure of 0.2 MPa to overcome the spring and extend the rod.
No. On air loss, the internal spring drives the rod to the fully retracted rest position; it cannot hold an arbitrary mid-stroke load. For held mid-stroke loads, use a double-acting MF cylinder with an external rod lock. This model includes a -S magnet for CMSG/DMSG/EMSG sensors.
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