Airtac MSF Single Acting Mini Cylinder MSF40X20SCA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X20SCA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 20mm 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
- Stroke20 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 MSF40X20SCA
Delivering a robust 535.3 N of push force at 0.5 MPa (786.5 N at 0.7 MPa), this AirTAC MSF40X20SCA mini cylinder handles heavy-duty clamping and ejection tasks. It is a single-acting, spring-return actuator: compressed air entering the 1/4 inch port extends the 16 mm rod, while an internal spring retracts it. Because you only plumb one port, valve complexity drops, and the unit fails safely to the retracted position on air loss. The quoted force is already net of the return spring.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it resists mild corrosion and washdown environments. For the same 40 mm bore and 20 mm stroke, this riveted construction is shorter than an ISO 6432 cylinder, saving valuable mounting length. It features fixed TPU bumper pads for end-of-stroke deceleration and a CA pivot back cover. With a safe working load of roughly 321 N, it can vertically lift or clamp about 27 kg with a 2:1 safety margin.
Airtac MSF Single Acting Mini Cylinder MSF40X20SCA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X20SCA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 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 MSF40X20SCA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 MSF40X20SCA Is Used
Heavy-Duty Part Clamping
Uses the 535.3 N push force to secure heavy metal castings during machining. The spring return automatically releases the part if air pressure drops.
Product Ejection Gate
Ejects finished goods from a conveyor line. The single-acting design needs only one 1/4 inch air line, simplifying the manifold setup on the factory floor.
Vertical Lift Stop
Acts as a pneumatic stop for 25 kg packages. The CA pivot cover absorbs side loads while the stainless barrel withstands humid warehouse conditions.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X20SCA the Right Cylinder?
Choose this 40 mm bore if you need maximum push capacity in the MSF range; if your task requires less force, step down to the MSF32 which provides 323.3 N at 0.5 MPa. This MSF40X20SCA variant includes a piston magnet (-S) for CMSG, DMSG or EMSG position sensing, and uses a CA rear pivot cover. Ensure your supply stays at or above the 0.2 MPa floor, otherwise the internal spring will overpower the air and prevent extension. For mid-stroke load holding rather than simple spring-return ejection, select a double-acting MF cylinder with an external rod lock instead.
The male M14x1.5 rod thread and 1/4 inch port accommodate substantial pneumatic hardware. Remember that the spring-return mechanism cannot be loaded in the retract direction, so size your application strictly around the 535.3 N extension force.
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 MSF40X20SCA FAQ
This 40 mm bore cylinder provides a net push force of 535.3 N at 0.5 MPa and 786.5 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the return spring, with a maximum pressure of 1.0 MPa and a proof pressure of 1.5 MPa.
No. On air loss the internal spring drives the rod to the retracted rest position; it does not function as a controllable brake for mid-stroke holding. For held loads you need a double-acting MF cylinder with an external rod lock. The -S suffix on this model allows CMSG, DMSG or EMSG sensors to track end-of-stroke position.
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