Airtac MSF Single Acting Mini Cylinder MSF20X125CA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF20X125CA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø20mm bore and 125mm 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
- Stroke125 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 MSF20X125CA
Generating 117.5 N of push at 0.5 MPa, this single-acting cylinder uses compressed air to extend the rod and an internal spring to retract it. Because you only plumb one 1/8" port, valve complexity drops, and the rod fails safely to the retracted position if air pressure is lost. The quoted force is already net of the return spring.
Built as a JIS-standard round-body mini with a SUS304 stainless barrel and riveted aluminium covers, the unit is shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable mounting length. Fixed TPU bumper pads absorb end-of-stroke impact across the 125 mm travel. For sensing, note this SKU lacks the -S magnet and cannot host CMSG, DMSG, or EMSG switches. Factoring a 2:1 safety margin, it provides a vertical lift capacity of about 6 kg.
Airtac MSF Single Acting Mini Cylinder MSF20X125CA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF20X125CA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 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 MSF20X125CA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 MSF20X125CA Is Used
Light Parts Ejection
Pushes small plastic or aluminium parts out of a machining fixture using 117.5 N of force before springing back to clear the workspace.
Packaging Flap Folding
Extends 125 mm to fold carton flaps on a packing line, relying on the spring return to retract instantly when the box passes.
Tension Hold Clamp
Applies roughly 71 N of safe holding pressure against a lightweight workpiece, automatically releasing upon air loss.
Is the Airtac MSF Single Acting Mini Cylinder MSF20X125CA the Right Cylinder?
When sizing this 20 mm bore, verify your motion is strictly push-oriented, such as ejecting or clamping, since the return spring cannot be loaded. If the 117.5 N output at 0.5 MPa is insufficient, step up to the MSF25, which provides 192.8 N at the same pressure. Operating pressure must stay at or above 0.2 MPa; below that threshold, the spring overpowers the air and the rod will not extend. The CA back cover supplies a rear pivot point, complementing available LB, FA, SDB, and TC mountings.
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 MSF20X125CA FAQ
It delivers a net push force of 117.5 N at 0.5 MPa and 181.3 N at 0.7 MPa. The operating pressure ranges from 0.2 to 1.0 MPa, but you must supply at least 0.2 MPa to overcome the internal return spring.
No, this specific SKU does not include a magnet. To use CMSG, DMSG, or EMSG magnetic switches, you must select the -S variant of the MSF cylinder.
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