Airtac MSF Single Acting Mini Cylinder MSF20X20SCM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X20SCM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 20mm 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
- Stroke20 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MSF Single Acting Mini Cylinder MSF20X20SCM
Generating 117.5 N of push force at 0.5 MPa, this AirTAC MSF20X20SCM mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because you only plumb a single 1/8 inch port, valve complexity drops and the actuator fails to its retracted rest position on air loss. The quoted force is already net of the return spring, which requires a minimum 0.2 MPa operating pressure to overcome.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it occupies a shorter envelope than an ISO 6432 cylinder for the same 20 mm bore and 20 mm stroke. The rear CM round-end cover simplifies direct mounting, while the included -S piston magnet supports CMSG, DMSG or EMSG position switches. For sizing reference, this bore safely clamps about 6 kg vertically with a 2:1 margin.
Airtac MSF Single Acting Mini Cylinder MSF20X20SCM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X20SCM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 MSF20X20SCM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | 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 MSF20X20SCM Is Used
Light-Duty Clamping
Provides 117.5 N of push at 0.5 MPa to hold small workpieces, using the spring return to release the part automatically when air is cut.
Package Ejector
Extends 20 mm to knock lightweight cartons off a belt, relying on the single-acting design to fail safe and retract if the air supply drops.
Diverter Gate
Actuates a short flow gate on a 1/8 inch port; the SUS304 stainless barrel withstands mild washdown in sorting environments.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X20SCM the Right Cylinder?
This 20 mm bore is the smallest in the MSF family; if your task needs more push, the next size up is the MSF25, which yields 192.8 N at 0.5 MPa. Since no smaller MSF bore exists, applications requiring less than 117.5 N should seek a different form factor entirely. Choose this single-acting spring-return model for simple clamping, ejecting or gating where air loss must default to the retracted state.
Ensure your supply stays at or above the 0.2 MPa floor, otherwise the spring wins and the rod will not extend. The fixed TPU bumper pads absorb end-of-stroke impact across the 50-800 mm/s speed range. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion brackets, and the -S magnet version is required if you intend to track position with sensors.
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 MSF20X20SCM FAQ
It generates 117.5 N of push force at 0.5 MPa and 181.3 N at 0.7 MPa. These figures are net of the internal spring. Operating pressure must be between 0.2 and 1.0 MPa, as a minimum of 0.2 MPa is required to overcome the return spring.
No. On air loss the internal spring drives the rod to its retracted rest position; it cannot hold an arbitrary mid-stroke load and should not be used as a controllable brake. For mid-stroke holding, use a double-acting MF cylinder with an external rod lock.
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