Airtac MSF Single Acting Mini Cylinder MSF40X25SCM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X25SCM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 25mm stroke, 1/4" 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.
- BoreØ40 mm
- Stroke25 mm
- Port size1/4"
- Acting typeSingle acting, push (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF40X25SCM
Delivering 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X25SCM 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 a single 1/4 inch port, simplifying valve requirements. The JIS-standard round-body construction features a SUS304 stainless barrel and riveted aluminium covers, offering a shorter mounting envelope than an ISO 6432 unit of the same bore.
The quoted force is already net of the return spring, meaning you get that full thrust at the working face. With a practical safe working load of roughly 321 N, it can vertically lift or clamp about 27.3 kg with a 2:1 safety margin. The -S suffix adds a piston magnet for position sensing, and the CM round-end back cover suits compact pivot or face-mounting layouts.
Airtac MSF Single Acting Mini Cylinder MSF40X25SCM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X25SCM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 535.3 N |
| 0.7 MPa | 786.5 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 MSF40X25SCM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 MSF40X25SCM Is Used
Heavy-Duty Clamping
Exerts up to 786.5 N at 0.7 MPa to secure heavy metal workpieces during machining, using the spring return to release the part safely.
Part Ejection
Pushes finished products off a conveyor line with a safe working load of 321 N, automatically retracting when air pressure is removed.
Pallet Gating
Acts as a robust stopper gate for heavy pallets, holding approximately 27.3 kg vertically and failing safe to the open position on air loss.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X25SCM the Right Cylinder?
If 323.3 N from the MSF32 at 0.5 MPa is insufficient, this 40 mm bore is the largest available in the series with no larger frame size. It provides 786.5 N at 0.7 MPa, but remember the 0.2 MPa pressure floor; below that, the internal spring overcomes the air and forces the rod back to rest. Fixed TPU bumper pads absorb end-of-stroke impacts across the 50-800 mm/s speed range.
This single-acting push design is ideal for clamping, ejecting, or gating tasks where the load must return to a safe retracted position upon air loss. The -S magnet enables CMSG, DMSG, or EMSG switches for end-position confirmation, while the CM rear cover and standard 1/4 inch port simplify integration.
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 MSF40X25SCM FAQ
It generates 535.3 N of push force at 0.5 MPa and 786.5 N at 0.7 MPa. The operating pressure range is 0.2 to 1.0 MPa; a minimum of 0.2 MPa is required to overcome the internal return spring.
No. On air loss, the spring drives the rod to the fully retracted position, so it cannot hold an arbitrary mid-stroke load. For mid-stroke holding, use a double-acting MF cylinder with an external rod lock. The -S option allows CMSG, DMSG, or EMSG sensors to detect the ends.
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