Airtac MSF Single Acting Mini Cylinder MSF40X40SCA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X40SCA 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 MSF40X40SCA
Delivering 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X40SCA mini cylinder uses compressed air to extend the rod while an internal spring handles the retraction. Because it is single-acting, you only need to plumb one 1/4 inch port, which simplifies valve requirements and ensures the cylinder defaults safely to the retracted position upon air loss. The SUS304 stainless steel round body and riveted aluminium covers form a compact JIS-standard assembly that is physically shorter than an equivalent ISO 6432 unit, saving valuable mounting length.
The quoted output is already net of the return spring, meaning the true usable thrust is transparent. For practical sizing, a safe working load is approximately 321 N, or it can vertically lift and clamp about 27 kg with a 2:1 safety margin. The stroke terminates against fixed TPU bumper pads rather than an adjustable air cushion, and the included CA pivot back cover provides a robust mounting point for angular alignment.
Airtac MSF Single Acting Mini Cylinder MSF40X40SCA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X40SCA |
|---|---|
| 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 MSF40X40SCA
| 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 MSF40X40SCA Is Used
Heavy Duty Clamping
Exerts 535.3 N of thrust at 0.5 MPa to hold heavy metal castings firmly in place during machining, releasing automatically via spring return when air is cut.
Part Ejection Station
Pushes finished components off a conveyor belt with reliable force, using the single 1/4 inch air port to extend and the internal spring to quickly retract the 16 mm rod.
Pallet Gate Actuation
Operates heavy routing gates on packaging lines; the SUS304 stainless barrel resists washdown chemicals while the fail-safe spring return closes the gate on air loss.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X40SCA the Right Cylinder?
When sizing this 40 mm bore unit, compare its 535.3 N @0.5 MPa thrust against the next size down: the MSF32 offers 323.3 N @0.5 MPa, making this model the correct choice when the smaller bore cannot overcome your friction or clamp force. As 40 mm is the largest available MSF bore, you cannot scale up further within this series. Ensure your air supply stays at or above the 0.2 MPa floor, otherwise the internal spring will overpower the air pressure and prevent extension.
This specific configuration includes a CA rear pivot cover and a built-in piston magnet (the -S option), allowing you to mount CMSG, DMSG, or EMSG electronic or reed switches directly onto the barrel for position confirmation. You can pair it with LB foot, FA flange, SDB pivot-block, or TC trunnion hardware depending on your frame geometry.
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 MSF40X40SCA FAQ
This 40 mm bore 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 is strictly necessary to overcome the internal return spring and extend the rod.
No, the internal spring drives the rod back to the fully retracted rest position on air loss, so it cannot hold an arbitrary mid-stroke load. If you need to lock a load mid-stroke, use a double-acting MF cylinder paired with an external rod lock.
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