Airtac MSF Single Acting Mini Cylinder MSF40X150SCM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X150SCM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 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 MSF40X150SCM
Delivering 535.3 N of push force at 0.5 MPa (786.5 N at 0.7 MPa), this AirTAC MSF40X150SCM mini cylinder is built for heavy-duty clamping and ejection. The 40 mm bore uses a 16 mm rod, a 1/4" port, and an M14x1.5 male thread. Because it is a single-acting push type, compressed air extends the rod while an internal spring retracts it, meaning you only pipe one port. The quoted force is already net of the return spring, and the SUS304 stainless steel barrel shrinks mounting length compared to an ISO 6432 unit while resisting mild washdown.
With a 150 mm stroke, this JIS-standard round-body actuator hits the maximum standard stroke for the series. The fixed TPU bumper pads absorb end-of-stroke impacts across the 50-800 mm/s speed range. For sensing, the -S suffix equips the piston with a magnet for CMSG, DMSG, or EMSG switches, and the CM back cover provides a rounded rear mounting face. Based on the 0.5 MPa rating, a safe working load is roughly 321 N, or a vertical lift of about 27.3 kg with a 2:1 margin.
Airtac MSF Single Acting Mini Cylinder MSF40X150SCM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X150SCM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MSF40X150SCM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MSF40X150SCM Is Used
Heavy Duty Clamping
Uses the 535.3 N push force to secure heavy metal castings during machining, automatically releasing to the retracted position if air pressure drops.
Part Ejection
Pushes finished components off a conveyor belt with the 150 mm stroke, relying on the internal spring to retract the 16 mm rod quickly between cycles.
Pallet Gating
Acts as a spring-return stop gate on a packaging line, extending to halt pallet flow and safely retracting to release goods when the system vents.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X150SCM the Right Cylinder?
Choose this 40 mm bore if you need the highest push force in the MSF family; if your application requires less, step down to the MSF32 which provides 323.3 N at 0.5 MPa. Ensure your air supply stays at or above the 0.2 MPa floor, otherwise the internal spring will overpower the air and prevent extension. This single-acting design is optimal for spring-return clamping, gating, or ejecting tasks where the load must fail safe to the retracted position on air loss.
The CM round-end back cover suits direct pivot or rear-eye mounting, and you can add CMSG, DMSG, or EMSG sensors directly to the -S magnet slot. Note that the spring actively drives the retraction, so the rod cannot hold a load on the return stroke or maintain a mid-stroke position without air.
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 MSF40X150SCM FAQ
This 40 mm bore cylinder 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 return spring. You must supply at least 0.2 MPa of air pressure to overcome the spring and extend the rod.
No, the internal spring drives the rod to the fully retracted rest position on air loss, so it cannot hold an arbitrary mid-stroke load. For position holding you need a double-acting MF cylinder with an external rod lock. This -S model does support CMSG, DMSG, and EMSG sensors.
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