Airtac MSF Single Acting Mini Cylinder MSF25X20SCA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X20SCA 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 MSF25X20SCA
Delivering 192.8 N of push force at 0.5 MPa, this AirTAC MSF25X20SCA mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because you only plumb a single 1/8" port, valve complexity drops, and the unit defaults to a safe retracted position if air pressure falls below the 0.2 MPa floor. The quoted force is already net of the return spring, meaning it cannot be loaded on the retract stroke.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it occupies a shorter envelope than an ISO 6432 cylinder of the same 25 mm bore and 20 mm stroke. The -S suffix adds a piston magnet for CMSG, DMSG or EMSG switches, while the CA back cover provides a rear pivot mount. For sizing context, it yields a safe working load of roughly 116 N, or a vertical lift of about 9.8 kg with a 2:1 margin.
Airtac MSF Single Acting Mini Cylinder MSF25X20SCA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X20SCA |
|---|---|
| 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 MSF25X20SCA
| 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 MSF25X20SCA Is Used
Spring-Return Clamping
Uses the 192.8 N push output to hold parts during machining, automatically releasing to the retracted state if the air supply drops.
Package Ejector
Extends 20 mm to knock light cartons off a line, with the internal spring pulling the rod back to clear the conveyor path.
Pivot Gate Actuation
Pairs with the CA back cover to swing a diverter gate, pushing with about 116 N of safe working load before retracting.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X20SCA the Right Cylinder?
When sizing this 25 mm bore, compare its 192.8 N @0.5 MPa output against the smaller MSF20 at 117.5 N or the larger MSF32 at 323.3 N. This model fits spring-return clamping, ejecting or gating tasks where losing air safely retracts the 20 mm stroke. Remember the 0.2 MPa minimum operating pressure required to overcome the spring.
The CA rear pivot suits articulated mounts, and the -S magnet enables position sensing. End-of-stroke deceleration relies on fixed TPU bumper pads rather than an adjustable air cushion. For applications needing a held mid-stroke load on air loss, choose a double-acting MF cylinder with an external rod lock instead of relying on the spring.
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 MSF25X20SCA 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 return spring. The cylinder requires a minimum operating pressure of 0.2 MPa to overcome the spring and extend the rod, up to a maximum of 1.0 MPa.
No. On air loss the internal spring drives the rod to the fully retracted rest 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 on this unit allows CMSG, DMSG or EMSG sensors to detect end positions.
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