Airtac MSF Single Acting Mini Cylinder MSF20X50SCM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X50SCM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 50mm 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.
- BoreØ20 mm
- Stroke50 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF20X50SCM
Generating 117.5 N of push force at 0.5 MPa, this AirTAC mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only need to plumb one 1/8" port, simplifying valve requirements. The quoted force is already net of the return spring, yielding a safe working load of roughly 71 N or a 6 kg vertical lift with a 2:1 margin.
Built as a JIS-standard round-body unit, the SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments. For the same 20 mm bore and 50 mm stroke, this riveted construction is shorter than an ISO 6432 cylinder, saving valuable mounting length. The CM round-end back cover and fixed TPU bumper pads absorb end-of-stroke impacts across the 50-800 mm/s speed range.
Airtac MSF Single Acting Mini Cylinder MSF20X50SCM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X50SCM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 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.
Theoretical Output Force (Ø20mm)
| 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.
Model Code: Airtac MSF Single Acting Mini Cylinder MSF20X50SCM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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 MSF20X50SCM Is Used
Small Part Ejection
Pushes lightweight machined components out of a fixture with 117.5 N, letting the internal spring safely retract the rod between cycles.
Fail-Safe Clamping
Holds about 6 kg of vertical load with a 2:1 margin; the spring automatically releases the clamp to the retracted position if air pressure drops.
Compact Diverter Gate
Fits into tight transfer lines using its space-saving JIS round body, using the 1/8" port to actuate a routing flap before springing back.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X50SCM the Right Cylinder?
If 117.5 N at 0.5 MPa is insufficient, step up to the MSF25, which provides 192.8 N; as the smallest bore in the series, there is no smaller MSF option. This single-acting push type is ideal for simple clamping, ejecting, or gating tasks where the spring naturally retracts the load on air loss. Ensure your supply stays at or above the 0.2 MPa floor, otherwise the spring will overpower the air and prevent extension.
Mounting is flexible via LB foot, FA flange, SDB pivot, or TC trunnion brackets. This specific SKU includes the -S magnet, allowing direct fitment of CMSG, DMSG, or EMSG sensors for position confirmation. The male M8x1.25 rod thread makes fixture attachment straightforward.
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 MSF20X50SCM FAQ
It generates 117.5 N of push force at 0.5 MPa and 181.3 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; below that, the cylinder will not extend.
No. On air loss, the spring drives the rod to the fully retracted position, so it cannot hold an arbitrary mid-stroke load. For mid-stroke holding, use a double-acting MF cylinder with an external rod lock. This model includes the -S magnet for CMSG/DMSG/EMSG sensors.
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