Airtac MSF Single Acting Mini Cylinder MSF40X10SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X10SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 10mm 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
- Stroke10 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 MSF40X10SU
Delivering 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X10SU is a JIS-standard round-body mini cylinder built for single-acting push operation with a spring return. Air extends the 16 mm rod out of the SUS304 stainless barrel, while an internal spring retracts it, meaning you only pipe and valve a single 1/4" port. The quoted force is already net of the spring, and the cylinder cannot be loaded on the return stroke.
Because it is a riveted stainless-steel design rather than a tie-rod or profile cylinder, the body is notably shorter than an ISO 6432 unit for the same 40 mm bore and 10 mm stroke, saving valuable mounting length. The built-in magnet (-S) supports CMSG, DMSG, and EMSG position switches, while the flat U back cover keeps the overall footprint minimal. In practice, this bore yields a safe working load of roughly 321 N, or a vertical lift capacity of about 27.3 kg with a 2:1 safety margin.
Airtac MSF Single Acting Mini Cylinder MSF40X10SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X10SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 10 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 MSF40X10SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×10 | 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 MSF40X10SU Is Used
Heavy-Duty Clamping
Apply 535.3 N of push force to secure heavy metal workpieces during machining, releasing automatically to the retracted position when air is removed.
Part Ejection
Eject dense finished parts from a press line, using the spring return to cycle rapidly without needing a secondary retract air line.
Pallet Gating
Actuate heavy diverter gates on a packaging conveyor, where the fail-safe retracted state prevents flow blockages during an air loss event.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X10SU the Right Cylinder?
If 323.3 N from the MSF32 at 0.5 MPa is insufficient for your clamp or ejector, stepping up to this 40 mm bore provides 535.3 N of net push force; there is no larger bore in the MSF range. Single-acting spring-return operation is ideal when you need the rod to fail safely to the retracted position on air loss, but remember the system needs at least a 0.2 MPa supply to overcome the return spring before any movement occurs. Pair the U flat-end rear cover with LB foot, FA flange, or TC trunnion mounts as your chassis dictates, and specify CMSG or DMSG switches to leverage the integrated -S magnet.
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 MSF40X10SU FAQ
It generates 535.3 N of push force at 0.5 MPa and 786.5 N at 0.7 MPa. These figures are net of the internal spring. The operating pressure range is 0.2-1.0 MPa, and you must supply at least 0.2 MPa to overcome the return spring and extend the rod.
No, the spring drives the rod to the retracted position on air loss; it cannot hold an arbitrary mid-stroke load and is not a controllable brake. For a held mid-stroke load, use a double-acting MF cylinder with an external rod lock. The -S magnet on this unit allows CMSG/DMSG/EMSG sensors to confirm end positions.
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