Airtac MSF Single Acting Mini Cylinder MSF40X40SCM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X40SCM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 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 MSF40X40SCM
Delivering a robust 535.3 N of push force at 0.5 MPa and 786.5 N at 0.7 MPa, this 40 mm bore pneumatic mini cylinder is engineered for demanding ejection and clamping tasks. It operates as a single-acting push type: compressed air entering the 1/4 inch port extends the M14x1.5 rod, while an internal spring handles the return. This means you only plumb and valve one port, and the cylinder fails safely to the retracted position on air loss. The quoted forces are already net of the return spring.
Built with a JIS-standard round-body design, the SUS304 stainless steel barrel and riveted aluminium covers offer excellent resistance to mild corrosion and washdown environments. For the same bore and stroke, this construction is notably shorter than an ISO 6432 cylinder, saving valuable mounting length. It features fixed TPU bumper pads for end-of-stroke deceleration rather than an adjustable cushion. Factoring a 60 percent safety margin on the 0.5 MPa output yields a safe working load of roughly 321 N, or a vertical lift capacity of about 27.3 kg with a 2:1 ratio.
Airtac MSF Single Acting Mini Cylinder MSF40X40SCM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X40SCM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MSF40X40SCM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | 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 MSF40X40SCM Is Used
Heavy Part Ejection
Utilise the 535.3 N push force to positively eject dense machined metal components from a fixture, relying on the spring return to reset without needing a secondary valve.
Secure Workpiece Clamping
Apply safe holding force of roughly 321 N to secure heavy workpieces during machining, with the security of automatic retraction if compressed air is lost.
Package Diverting Gate
Actuate a routing gate on a washdown conveyor line, leveraging the compact JIS body length and SUS304 stainless barrel to withstand humid industrial environments.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X40SCM the Right Cylinder?
When sizing this unit, evaluate both directions: if 535.3 N at 0.5 MPa is excessive for your fixture, step down to the MSF32 which provides 323.3 N. As the 40 mm bore is the largest available in the MSF family, you cannot size up within this range. The single-acting spring-return design is optimal for simple clamping, ejecting, or gating operations where the load cannot be applied on the return stroke. Ensure your air supply maintains at least the 0.2 MPa floor required to overcome the internal spring. This specific configuration includes a CM round-end rear cover and the -S magnet option, enabling direct mounting of CMSG, DMSG, or EMSG position switches.
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 MSF40X40SCM FAQ
This single-acting cylinder provides a net push force of 535.3 N at 0.5 MPa and 786.5 N at 0.7 MPa. It requires an operating pressure between 0.2 and 1.0 MPa; the 0.2 MPa minimum floor is necessary to overcome the internal return spring. The unit features a 1/4 inch port and a 16 mm rod with an M14x1.5 male thread.
No, the internal spring drives the rod to the fully retracted rest position upon air loss, meaning it cannot hold an arbitrary mid-stroke load and should not be used as a controllable brake. For mid-stroke holding, a double-acting MF cylinder with an external rod lock is required. This unit includes the -S magnet for CMSG/DMSG/EMSG sensors and a CM round-end rear cover.
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