Airtac MSF Single Acting Mini Cylinder MSF25X15SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X15SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 15mm 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
- Stroke15 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 MSF25X15SU
Delivering 192.8 N of push force at 0.5 MPa, this AirTAC MSF25X15SU 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 inch port, and it fails safely to the retracted position on air loss. The quoted force is already net of the return spring, which requires a 0.2 MPa pressure floor to overcome.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it is shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable mounting length. The flat U back cover suits tight installations, while the -S suffix adds a piston magnet for CMSG, DMSG or EMSG sensors. With a 15 mm stroke and fixed TPU bumper pads, it provides a safe working load of about 116 N or a 9.8 kg vertical lift with a 2:1 margin.
Airtac MSF Single Acting Mini Cylinder MSF25X15SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X15SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 15 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 MSF25X15SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×15 | 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 MSF25X15SU Is Used
Short-Stroke Clamping
Uses the 192.8 N push force at 0.5 MPa to secure light metal parts during machining, with the spring safely retracting the rod when air is removed.
Package Ejector Gate
The 15 mm stroke quickly pushes small cartons off a belt, relying on the single 1/8 inch air line for simple valve control.
Vertical Lift Stop
Raises a 9.8 kg payload with a 2:1 safety margin before the fixed TPU bumper pads absorb the end-of-stroke impact.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X15SU the Right Cylinder?
When sizing this 25 mm bore, compare it both ways: the MSF20 provides 117.5 N at 0.5 MPa, while the MSF32 offers 323.3 N at 0.5 MPa. This model fits spring-return clamping, ejecting or gating tasks where the load cannot push against the return stroke. Remember the 0.2 MPa operating floor needed to beat the spring. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion, and the included -S magnet enables position sensing.
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 MSF25X15SU FAQ
It generates 192.8 N of push force at 0.5 MPa and 290.9 N at 0.7 MPa. The operating pressure ranges from 0.2 MPa to 1.0 MPa, with a 0.2 MPa floor required to overcome the return spring and a 1.5 MPa proof pressure.
No, the spring drives the rod to the retracted rest position on air loss and cannot act as a controllable brake. For a held mid-stroke load use a double-acting MF with an external rod lock. The -S magnet allows CMSG, DMSG or EMSG sensors to track end positions.
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