Airtac MSF Single Acting Mini Cylinder MSF25X30U
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X30U is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 30mm 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
- Stroke30 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 MSF25X30U
Delivering a net push force of 192.8 N at 0.5 MPa (290.9 N at 0.7 MPa), this 25 mm bore mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only need to plumb one 1/8" port, simplifying valve requirements. The SUS304 stainless round body and riveted aluminium covers form a compact JIS-standard assembly that is notably shorter than an equivalent ISO 6432 unit, saving valuable mounting space.
This specific configuration uses a 30 mm stroke with a U flat-end rear cover. The quoted forces are already net of the return spring, which dictates a strict 0.2 MPa operating floor. For practical sizing, expect a safe working load of roughly 116 N (about 60% of the 0.5 MPa rating), making it suitable for clamping around 9.8 kg vertically with a 2:1 margin. Note this SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors.
Airtac MSF Single Acting Mini Cylinder MSF25X30U Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X30U |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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 MSF25X30U
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×30 | 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 MSF25X30U Is Used
Spring-Return Clamping
Uses the 192.8 N push force to secure light workpieces, automatically releasing them to the retracted position if air pressure drops.
Part Ejector Gate
Extends 30 mm to deflect components off a line, relying on the internal spring to withdraw the gate quickly when the air signal ceases.
Vertical Lift Stop
Raises a light 9.8 kg payload against gravity using a single 1/8" air line, saving plumbing complexity compared to double-acting alternatives.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X30U the Right Cylinder?
When sizing this unit, compare it directly with its neighbors: the MSF20 provides 117.5 N at 0.5 MPa if your load is lighter, while the MSF32 offers 323.3 N at 0.5 MPa for heavier duty. Choose this single-acting spring-return model for simple clamping, ejecting, or gating tasks where air loss must default the actuator to a safe retracted state. Ensure your supply stays at or above the 0.2 MPa floor so air pressure can reliably overcome the internal spring. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets.
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 MSF25X30U FAQ
It generates a net push force of 192.8 N at 0.5 MPa and 290.9 N at 0.7 MPa. Because the force is measured against the internal return spring, the operating pressure must remain at or above the 0.2 MPa floor, up to a maximum of 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot host CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. Also, remember the spring drives the rod to the retracted position on air loss; it will not hold a mid-stroke load.
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