Airtac MSF Single Acting Mini Cylinder MSF25X120SCA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X120SCA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 120mm 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
- Stroke120 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 MSF25X120SCA
Delivering 192.8 N of push force at 0.5 MPa, this AirTAC MSF25X120SCA 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 and ensuring the 120 mm stroke fails to the retracted position on air loss. The SUS304 stainless round body with riveted aluminium covers is shorter than an ISO 6432 cylinder of the same bore and stroke, actively resisting mild washdown corrosion.
The quoted force is already net of the return spring, which requires a 0.2 MPa minimum pressure to overcome. For practical sizing, this translates to a safe working load of about 116 N, or a vertical lift capacity of roughly 9.8 kg with a 2:1 margin. End-of-stroke deceleration relies on fixed TPU bumper pads rather than an adjustable air cushion, and the rear CA pivot cover simplifies angular mounting.
Airtac MSF Single Acting Mini Cylinder MSF25X120SCA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X120SCA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 120 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 MSF25X120SCA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×120 | 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 MSF25X120SCA Is Used
Spring-Return Clamping
Uses the 192.8 N push force to secure parts during machining, automatically releasing to the retracted state if the air supply drops.
Package Ejector Gate
Extends 120 mm to divert items on a line, relying on the internal spring to pull the gate back without needing a second air line.
Vertical Lift Stop
Raises light fixtures up to 9.8 kg with a 2:1 safety margin, using the CA pivot mount to accommodate angular alignment shifts.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X120SCA 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 this single-acting spring-return format for clamping, ejecting, or gating tasks where the load must return to rest unpowered, but never load the rod in the retract direction. Maintain at least 0.2 MPa operating pressure to ensure the spring retracts properly. The built-in -S magnet supports CMSG, DMSG, or EMSG sensors, and you can pair the CA pivot cover with LB foot, FA flange, SDB pivot, or TC trunnion mounts.
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 MSF25X120SCA FAQ
This 25 mm bore cylinder provides a net push force of 192.8 N at 0.5 MPa and 290.9 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring, and it uses a 1/8" air port.
No. The spring drives the rod to the retracted rest position on air loss; 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/EMSG sensors for end-of-stroke detection.
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