Airtac MSF Single Acting Mini Cylinder MSF40X20CA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X20CA 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 MSF40X20CA
Delivering 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X20CA mini cylinder is built for robust clamping and ejection tasks. It is a JIS-standard round-body actuator with a SUS304 stainless barrel and riveted aluminium covers, engineered specifically as a single-acting push type. Air extends the 16 mm rod out of the 40 mm bore, while an internal spring handles the retraction, meaning you only need to plumb a single 1/4" port.
Because the spring constantly pulls the rod back, the cylinder naturally fails to a safe retracted state if air pressure drops below the 0.2 MPa floor. For sizing, this yields a safe working load of about 321 N, or a vertical lift capacity near 27.3 kg with a 2:1 margin. This specific SKU lacks the -S magnet option, so it cannot host CMSG, DMSG, or EMSG sensors, and it features a CA rear pivot cover for articulated mounting.
Airtac MSF Single Acting Mini Cylinder MSF40X20CA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X20CA |
|---|---|
| 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 MSF40X20CA
| 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 MSF40X20CA Is Used
Heavy Part Ejection
Uses the 535.3 N push force to positively eject dense machined metal components from a fixture, relying on the spring to retract the 16 mm rod quickly.
Pivot Gate Actuation
Leverages the CA rear cover to swing a diverter gate on a packaging line, extending to block flow and springing back to clear the conveyor path.
Pallet Tensioning
Maintains constant tension on a film or strap roll during packaging, safely releasing the load to its retracted rest position if the compressed air supply is interrupted.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X20CA the Right Cylinder?
When sizing this 40 mm bore, compare its 535.3 N @0.5 MPa output against the next size down: the MSF32, which provides 323.3 N @0.5 MPa. Since 40 mm is the largest available MSF bore, you cannot step up further within this series. Choose this single-acting spring-return model for operations like part ejection or tension gating where losing air pressure safely forces the rod back to its starting position. Ensure your air supply stays at or above the 0.2 MPa minimum to overcome the return spring, and utilize the built-in CA pivot cover for swinging or articulated linkages.
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 MSF40X20CA FAQ
This 40 mm bore cylinder generates a net push force of 535.3 N at 0.5 MPa and 786.5 N at 0.7 MPa. The operating pressure range is 0.2 to 1.0 MPa; you must maintain at least 0.2 MPa to overcome the internal return spring.
No, this specific SKU does not include a magnet. You must select an MSF model with the -S suffix to use CMSG, DMSG, or EMSG magnetic switches. Additionally, this unit uses fixed TPU bumper pads rather than an adjustable air cushion.
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1-Year Warranty
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