Airtac MSF Single Acting Mini Cylinder MSF25X30SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X30SU 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 MSF25X30SU
Delivering 192.8 N of push force at 0.5 MPa, this AirTAC MSF25X30SU 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 inch port, simplifying your valve setup while ensuring the 30 mm stroke fails safely to the retracted position on air loss. The SUS304 stainless round body and riveted aluminium covers yield a shorter mounting envelope than an ISO 6432 unit of the same size.
The quoted force is already net of the return spring, meaning it is purely available for work. For practical sizing, expect a safe working load of about 116 N, or roughly 9.8 kg of vertical lift with a 2:1 margin. This -S variant includes a piston magnet for position sensing, and the U flat-end rear cover provides a flush mounting face for tight spaces.
Airtac MSF Single Acting Mini Cylinder MSF25X30SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X30SU |
|---|---|
| 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 MSF25X30SU
| 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 MSF25X30SU Is Used
Spring-Return Clamping
Uses the 192.8 N push force to secure parts for machining, automatically releasing them to the retracted position if air pressure drops.
Package Ejector
Extends 30 mm to push light cartons off a belt, relying on the internal spring to cycle back without needing a secondary air line.
Diversion Gate
Actuates a short diverter flap on a sorting line, using the U flat-end cover for flush rear mounting against machine framing.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X30SU the Right Cylinder?
When sizing this 25 mm bore, check both ends of the range: the MSF20 provides 117.5 N at 0.5 MPa if your load is lighter, while the MSF32 offers 323.3 N if you need more punch. You must supply at least 0.2 MPa of air pressure to overcome the internal spring before any useful extension occurs. This spring-return action is ideal for clamping, ejecting, or gating tasks where the cylinder must default to a safe resting state. Mounting is versatile with LB foot, FA flange, SDB pivot, or TC trunnion brackets, and the included -S magnet supports CMSG, DMSG, or EMSG switches.
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 MSF25X30SU FAQ
It generates 192.8 N of push force at 0.5 MPa and 290.9 N at 0.7 MPa. Because it is single-acting with a spring return, you must supply at least 0.2 MPa of air pressure to overcome the spring before the rod can extend.
No, the internal spring drives the rod to the fully retracted position on air loss, so it cannot hold a mid-stroke load. The -S magnet allows CMSG or DMSG sensors to track end-of-stroke position, but for holding an arbitrary mid-stroke load you need a double-acting MF cylinder with an external rod lock.
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