Airtac MSF Single Acting Mini Cylinder MSF25X150U
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X150U 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 MSF25X150U
Delivering 192.8 N of push force at 0.5 MPa, this AirTAC MSF25X150U 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 quoted force is already net of the return spring, and the unit requires at least 0.2 MPa of operating pressure to overcome that spring. It features a JIS-standard round-body design with a SUS304 stainless steel barrel and riveted aluminium covers, offering a shorter mounting envelope than an ISO 6432 cylinder of the same bore and stroke.
This specific configuration includes a 150 mm stroke and a U flat-end rear cover. It uses fixed TPU bumper pads for end-of-stroke deceleration rather than an adjustable cushion. For vertical applications, the 192.8 N push force at 0.5 MPa yields a safe working load of about 116 N, meaning it can lift or clamp approximately 9.8 kg with a 2:1 safety margin. Note that this SKU lacks a magnet and cannot accept position sensors; adding the -S option enables CMSG, DMSG, or EMSG switches.
Airtac MSF Single Acting Mini Cylinder MSF25X150U Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X150U |
|---|---|
| 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 MSF25X150U
| 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 MSF25X150U Is Used
Part Ejection
Pushes finished parts out of a machining fixture with 192.8 N of force, relying on the internal spring to retract the rod clear of the workspace when air is removed.
Vertical Lift Gate
Raises a light 9.8 kg diverter gate using the 150 mm stroke, safely lowering it back to the rest position if compressed air pressure drops below the 0.2 MPa floor.
Spring-Return Clamping
Secures workpieces during assembly with a 116 N safe working load, ensuring the clamp releases automatically to the retracted position during an air loss event.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X150U the Right Cylinder?
When sizing this 25 mm bore, compare it directly against adjacent options. If 192.8 N at 0.5 MPa is insufficient, step up to the MSF32, which provides 323.3 N. If your load is lighter, the MSF20 offers 117.5 N and saves space. Single-acting spring-return cylinders are ideal for clamping, ejecting, or gating tasks where the load must return to a safe retracted position upon air loss. Remember the 0.2 MPa pressure floor; below this, the spring wins and the rod will not extend fully. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets to suit your frame.
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 MSF25X150U 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. The operating pressure range is 0.2 to 1.0 MPa; you must maintain at least 0.2 MPa to overcome the internal spring and extend the rod.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You would need the -S variant for magnetic sensing. Also, on air loss, the spring drives the rod to the retracted position; it will not hold a mid-stroke load.
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