Airtac MSF Single Acting Mini Cylinder MSF25X40CA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X40CA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 40mm 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
- Stroke40 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 MSF25X40CA
Delivering 192.8 N of push force at 0.5 MPa (290.9 N at 0.7 MPa), this JIS-standard round-body mini cylinder uses air to extend the rod and an internal spring to retract it. Because the spring handles the return, you only pipe one 1/8" port, simplifying your valve setup. The quoted force is already net of the spring resistance. With a 10 mm rod and M10x1.25 male thread, the SUS304 stainless barrel shrinks mounting length compared to an ISO 6432 unit while resisting mild washdown.
For practical sizing, expect a safe working load of about 116 N, or a vertical lift capacity near 9.8 kg with a 2:1 safety margin. This specific SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without switching to an -S variant. End-of-stroke deceleration relies on fixed TPU bumper pads rather than an adjustable cushion. The CA back cover provides a rear pivot point for angular movement.
Airtac MSF Single Acting Mini Cylinder MSF25X40CA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X40CA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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 MSF25X40CA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 MSF25X40CA Is Used
Clamping Ejector
Pushes parts out of a fixture with 192.8 N at 0.5 MPa, letting the spring safely pull the rod back when air is removed.
Gate Diverter
Extends a 40 mm stroke to deflect items on a line, relying on fixed TPU bumpers to absorb the end-of-stroke impact.
Light Lift Station
Raises lightweight trays weighing up to 9.8 kg with a 2:1 margin, using the CA pivot to accommodate angular alignment.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X40CA the Right Cylinder?
If 192.8 N at 0.5 MPa is too much, step down to the MSF20 bore offering 117.5 N; if you need more extension power, the MSF32 bore provides 323.3 N. Single-acting push types fit best when you need a spring to fail-safe to the retracted position on air loss, such as in clamping or ejection. Maintain at least 0.2 MPa operating pressure so air can overcome the return spring. Mount this 25 mm bore unit using the CA rear pivot, and add the -S magnet option if position sensing is required.
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 MSF25X40CA FAQ
It generates 192.8 N of push force at 0.5 MPa and 290.9 N at 0.7 MPa. Operating pressure must stay between 0.2 and 1.0 MPa, as 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 and cannot hold an arbitrary mid-stroke load. Additionally, this SKU has no magnet, so it cannot support CMSG, DMSG, or EMSG switches; you would need the -S variant for sensing.
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