Airtac MSF Single Acting Mini Cylinder MSF25X50U
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X50U is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 50mm 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
- Stroke50 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MSF Single Acting Mini Cylinder MSF25X50U
Delivering 192.8 N of push force at 0.5 MPa, this AirTAC MSF25X50U 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 JIS-standard riveted round body features a SUS304 stainless steel barrel and a U flat-end rear cover, offering a shorter mounting envelope than an ISO 6432 unit of the same bore and stroke.
The quoted push force is already net of the return spring, meaning you get that usable thrust after the spring drag is overcome. For practical sizing, expect a safe working load of about 116 N, or a vertical lift capacity of roughly 9.8 kg with a 2:1 safety margin. Note that this specific SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG position sensors without upgrading to the -S variant.
Airtac MSF Single Acting Mini Cylinder MSF25X50U Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X50U |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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 MSF25X50U
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MSF25X50U Is Used
Spring-Return Clamping
Provides 192.8 N of push force to secure light workpieces, automatically releasing them to the retracted position if air pressure drops.
Part Ejection Gate
Uses the 50 mm stroke to push components off a line, relying on the internal spring to pull the gate back and clear the path.
Vertical Lift Stop
Safely lifts or halts loads up to 9.8 kg with a 2:1 margin, using the single 1/8" port for straightforward pneumatic control.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X50U the Right Cylinder?
When sizing this 25 mm bore, compare it both ways: step down to an MSF20 for 117.5 N @0.5 MPa, or step up to an MSF32 for 323.3 N @0.5 MPa. Choose the single-acting MSF when you need a clamp or gate that safely fails to the retracted position on air loss. Ensure your supply stays at or above the 0.2 MPa floor, or the spring will overpower the air and prevent extension. 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 MSF25X50U FAQ
The single-acting push force is 192.8 N at 0.5 MPa and 290.9 N at 0.7 MPa. Because this force is net of the internal return spring, you must maintain a minimum operating pressure of 0.2 MPa to ensure air overcomes the spring and extends the rod.
No, this SKU does not include a magnet, so it cannot host CMSG, DMSG, or EMSG switches. You would need the -S magnet option for sensing. Also, remember the spring only drives the rod to the retracted rest position on air loss; it will not hold a mid-stroke load.
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