Airtac MSF Single Acting Mini Cylinder MSF20X15CM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X15CM 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.
- BoreØ20 mm
- Stroke15 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 MSF20X15CM
Delivering a net push of 117.5 N 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 plumb one 1/8" port, which simplifies valve requirements and ensures the rod fails to the retracted position on air loss. The CM round-end rear cover and 15 mm stroke make it ideal for very tight ejector or clamping stations.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it occupies a shorter mounting envelope than an ISO 6432 cylinder of the same bore. The quoted force is already net of the return spring, yielding a safe working load of roughly 71 N or a 2:1 vertical lift capacity of about 6 kg. Note that this SKU lacks the -S magnet, so it cannot host CMSG, DMSG or EMSG sensors.
Airtac MSF Single Acting Mini Cylinder MSF20X15CM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X15CM |
|---|---|
| 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.
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 MSF20X15CM
| 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.
Where the Airtac MSF Single Acting Mini Cylinder MSF20X15CM Is Used
Small Part Ejection
Uses the 15 mm stroke to kick lightweight machined components out of a fixture with 71 N of safe push force.
Spring-Return Clamping
Holds about 6 kg vertically against gravity during a brief machining cycle, relying on air loss to release safely.
Compact Gate Diverter
Fits into tight transfer lines using the CM round-end cover, deflecting small packets on a conveyor belt.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X15CM the Right Cylinder?
If 71 N of safe working load is insufficient, step up to the MSF25, which provides 192.8 N at 0.5 MPa; as the 20 mm bore is the smallest available in this series, there is no smaller MSF option. Ensure your supply stays at or above the 0.2 MPa floor, otherwise the internal spring will overpower the air and prevent extension. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion brackets, while position sensing requires switching to an -S magnet variant.
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 MSF20X15CM FAQ
It generates a net push force of 117.5 N at 0.5 MPa and 181.3 N at 0.7 MPa. Because it is single-acting with a spring return, you must supply at least 0.2 MPa to overcome the internal spring and extend the rod.
No, this specific SKU does not include a magnet. To use CMSG, DMSG or EMSG switches, you must select the -S variant. Additionally, the fixed TPU bumper pads absorb end-of-stroke impact, and the SUS304 stainless barrel resists mild washdown.
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