Airtac MSF Single Acting Mini Cylinder MSF25X40CM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X40CM 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 MSF25X40CM
Delivering 192.8 N of push force at 0.5 MPa, this AirTAC MSF25X40CM is a JIS-standard round-body mini cylinder built for single-acting operation. Air extends the Ø10 mm rod through a 40 mm stroke, while an internal spring handles the retraction. Because you only plumb the 1/8" port, valve requirements are halved, and the unit fails to a safe retracted state on air loss. The riveted aluminium covers and SUS304 stainless barrel resist mild washdown corrosion.
The quoted output is already net of the return spring, meaning your actual usable thrust is transparent. For practical sizing, expect a safe working load of roughly 116 N, or a vertical lift capacity of about 9.8 kg with a 2:1 safety margin. This SKU ships without a magnet, so it cannot host CMSG, DMSG, or EMSG sensors. It uses fixed TPU bumper pads for end-of-stroke deceleration and features a CM round-end rear cover.
Airtac MSF Single Acting Mini Cylinder MSF25X40CM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X40CM |
|---|---|
| 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 MSF25X40CM
| 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 MSF25X40CM Is Used
Spring-Return Clamping
Uses the 192.8 N thrust at 0.5 MPa to secure parts for machining, with the internal spring automatically releasing the clamp on air loss.
Package Ejector Gate
Pushes light cartons off a sorting line with a 40 mm stroke, relying on the spring to retract the rod quickly between cycles.
Vertical Lift Stop
Raises a 9.8 kg fixture safely using a 2:1 load margin, dropping it back to the retracted rest position when the air signal drops.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X40CM 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 dedicated spring-return action, such as clamping or ejecting, and ensure your supply stays at or above the 0.2 MPa floor needed to overcome the spring. Mounting is flexible via LB foot, FA flange, SDB pivot, or TC trunnion brackets. If your cycle requires position feedback, you must step up to an -S magnet variant, as this base unit cannot accept a sensor.
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 MSF25X40CM FAQ
It generates 192.8 N of thrust at 0.5 MPa and 290.9 N at 0.7 MPa. Operating pressure ranges from 0.2 to 1.0 MPa, with a 0.2 MPa minimum required to overcome the return spring.
No, this specific SKU lacks a piston magnet and cannot host CMSG, DMSG, or EMSG switches. You must select the -S variant to enable magnetic sensing. The rod is also strictly single-acting push and cannot be loaded on the return stroke.
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