Airtac MSF Single Acting Mini Cylinder MSF25X80SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X80SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 80mm 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
- Stroke80 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 MSF25X80SU
Delivering a net push force of 192.8 N at 0.5 MPa, this JIS-standard round-body mini cylinder uses a SUS304 stainless barrel and riveted aluminium covers to save space. Because it is a single-acting push type, compressed air extends the rod while an internal spring retracts it, meaning you only pipe and valve one 1/8 inch port. The body is notably shorter than an ISO 6432 cylinder for the same 25 mm bore and 80 mm stroke.
The quoted output is already net of the return spring, yielding a safe working load of about 116 N or a 9.8 kg vertical lift with a 2:1 margin. The -S suffix equips the piston with a magnet for CMSG, DMSG, or EMSG position sensing, while the U flat-end back cover suits tight mounting envelopes. Fixed TPU bumper pads absorb end-of-stroke impact across the 50-800 mm/s speed range.
Airtac MSF Single Acting Mini Cylinder MSF25X80SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X80SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 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 MSF25X80SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×80 | 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 MSF25X80SU Is Used
Ejector Gate
Uses the 192.8 N push output to knock finished parts off a conveyor, with the spring ensuring the gate retracts clear on air loss.
Holding Clamp
Secures light workpieces during machining, applying roughly 116 N of safe holding force before springing back to release the part.
Vertical Lift
Raises a 9.8 kg fixture against gravity using the 0.5 MPa thrust, relying on the spring return to lower the load safely.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X80SU the Right Cylinder?
If 117.5 N from the MSF20 is insufficient, this 25 mm bore provides 192.8 N at 0.5 MPa; stepping up to the MSF32 yields 323.3 N if your clamp requires more thrust. Remember the 0.2 MPa pressure floor—below that, the internal spring wins and the rod will not extend. Match your mounting using LB foot, FA flange, SDB pivot, or TC trunnion brackets, and select CMSG, DMSG, or EMSG sensors since the -S magnet is present.
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 MSF25X80SU 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 to overcome the spring and extend the rod.
No. On air loss the internal spring drives the rod to the retracted position; it cannot hold an arbitrary mid-stroke load. For position holding you need a double-acting MF cylinder with an external rod lock. The -S magnet allows CMSG, DMSG, or EMSG sensors to track end positions.
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