Airtac MSF Single Acting Mini Cylinder MSF20X80CM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X80CM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 80mm 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
- Stroke80 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 MSF20X80CM
Delivering 117.5 N of push at 0.5 MPa, this 20 mm bore mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only pipe and valve one 1/8" port, which simplifies assembly and ensures the rod fails to the retracted position on air loss. The SUS304 stainless round body and riveted aluminium covers form a compact JIS-standard package that is shorter than an equivalent ISO 6432 unit, saving valuable mounting length.
The quoted force is already net of the return spring, meaning it is the actual usable thrust. For practical sizing, this translates to a safe working load of roughly 71 N, or the ability to vertically lift and hold about 6 kg with a 2:1 safety margin. This SKU lacks the -S magnet option and therefore cannot accept CMSG, DMSG, or EMSG position switches. It features a CM round-end rear cover and fixed TPU bumper pads to soften stroke ends.
Airtac MSF Single Acting Mini Cylinder MSF20X80CM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X80CM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 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 MSF20X80CM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×80 | 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 MSF20X80CM Is Used
Light-Duty Clamping
Provides 71 N of safe clamping force to hold small plastic or aluminium components during drilling or light machining.
Parts Ejection
Uses the 80 mm stroke to push lightweight finished parts off a conveyor belt, relying on the spring to retract clear of the line.
Flap Folding
Extends to fold small cardboard packaging flaps, with the spring return ensuring the mechanism retracts before the next box arrives.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X80CM the Right Cylinder?
When sizing this 20 mm bore unit, verify your load against the 117.5 N push available at 0.5 MPa. If your application requires more force, step up to the MSF25, which provides 192.8 N at 0.5 MPa; as this is the smallest bore in the MSF range, there is no smaller option. Ensure your supply stays at or above the 0.2 MPa floor, otherwise the internal spring will overpower the air pressure and prevent extension. Mounting is versatile via LB foot, FA flange, SDB pivot, or TC trunnion brackets, and you must select a -S variant if you need magnetic sensing.
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 MSF20X80CM FAQ
It generates 117.5 N of thrust at 0.5 MPa and 181.3 N at 0.7 MPa. These figures are net of the return spring. You must supply at least 0.2 MPa of air pressure to overcome the spring and extend the rod.
No. On air loss the internal spring drives the rod back to its fully retracted rest position; it cannot hold an arbitrary mid-stroke load. For position holding you would need a double-acting MF cylinder with an external rod lock.
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