
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X15CA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 15mm stroke, 1/8" 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.
Delivering 117.5 N of push force at 0.5 MPa, this AirTAC MSF20X15CA mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only plumb one 1/8" port, simplifying valve requirements while ensuring the 15 mm stroke returns to a safe retracted position on air loss. The SUS304 stainless round body and riveted aluminium covers form a compact JIS-standard assembly that is shorter than an ISO 6432 cylinder of the same bore and stroke.
The quoted push force is already net of the return spring, meaning it requires at least 0.2 MPa of operating pressure to overcome the spring and move out. With fixed TPU bumper pads absorbing end-of-stroke impact, it handles speeds of 50-800 mm/s. For sizing, expect a safe working load of roughly 71 N, or a vertical lift capacity of about 6 kg with a 2:1 safety margin. This non-magnet SKU cannot host position sensors; adding the -S option enables CMSG, DMSG, or EMSG switches.
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X15CA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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.
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 117.5 N |
| 0.7 MPa | 181.3 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.
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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.
Provides 117.5 N of push at 0.5 MPa to secure light workpieces during machining, releasing automatically to the retracted position on air loss.
Uses its 15 mm stroke and roughly 71 N safe working load to kick small components out of a fixture without complex double-acting plumbing.
Leverages the CA rear pivot to actuate lightweight diverter gates, relying on the spring return to fail safely closed when the air supply drops.
When sizing this 20 mm bore unit, step up to the MSF25 if you need more push, as it yields 192.8 N at 0.5 MPa. There is no smaller MSF bore, so 20 mm is the floor for this series. The 0.2 MPa minimum pressure is critical—below that threshold the internal spring wins and the rod will not extend. This specific configuration uses a CA rear pivot cover, so match your mounting geometry accordingly. Since this SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG switches for position feedback.
Quick checklist
This 20 mm bore cylinder generates a single-acting push force of 117.5 N at 0.5 MPa and 181.3 N at 0.7 MPa. Because these figures are net of the internal spring, you must supply at least 0.2 MPa to overcome the spring and extend the rod.
No, this specific SKU does not include a magnet and cannot host CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. Also, remember the spring only drives the rod to the retracted rest position on air loss; it will not hold a mid-stroke load.
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