Airtac MSF Single Acting Mini Cylinder MSF25X20SCM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X20SCM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 20mm 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
- Stroke20 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 MSF25X20SCM
Delivering 192.8 N of push force at 0.5 MPa, this AirTAC MSF25X20SCM mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only plumb one 1/8" port, simplifying valve requirements. The spring ensures the rod fails to the retracted position if air pressure drops. It features a JIS-standard round body with a SUS304 stainless barrel and riveted aluminium covers, offering a shorter mounting envelope than an ISO 6432 unit of the same size.
The quoted force is already net of the return spring, and the cylinder requires at least 0.2 MPa to overcome that spring. With a 10 mm piston rod and an M10x1.25 male thread, it handles a safe working load of about 116 N. This specific configuration includes a CM round-end rear cover and a built-in magnet (-S) for position sensing.
Airtac MSF Single Acting Mini Cylinder MSF25X20SCM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X20SCM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 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 MSF25X20SCM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 MSF25X20SCM Is Used
Spring-Return Clamping
Uses the 192.8 N push force to secure parts during machining, automatically releasing to the retracted position on air loss.
Package Ejector
Extends 20 mm to push light cartons off a belt, relying on the internal spring to cycle back without needing a second air line.
Sorter Gate
Actuates a short diverter gate; the SUS304 stainless barrel withstands mild washdown in distribution hubs.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X20SCM the Right Cylinder?
When sizing this 25 mm bore, compare it directly: the MSF20 provides 117.5 N at 0.5 MPa, while the MSF32 offers 323.3 N at 0.5 MPa. Choose this model when your application requires a spring-return action for clamping or ejecting, keeping in mind the rod cannot be loaded on the return stroke. Ensure your air supply stays between 0.2 and 1.0 MPa so the spring does not overpower the air. The -S magnet allows CMSG, DMSG, or EMSG switches to track position, and the CM round-end cover matches standard pivot or direct-mount setups.
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 MSF25X20SCM FAQ
It generates 192.8 N of push force at 0.5 MPa and 290.9 N at 0.7 MPa. These figures are net of the internal spring. You must supply at least 0.2 MPa for the air to overcome the spring and extend the rod, with a maximum operating pressure of 1.0 MPa.
No. On air loss the internal spring drives the rod back to its fully retracted rest position; it cannot hold an arbitrary mid-stroke load. For held mid-stroke positioning you need a double-acting MF cylinder with an external rod lock. This unit uses fixed TPU bumper pads for end-of-stroke deceleration.
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1-Year Warranty
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