Airtac MSF Single Acting Mini Cylinder MSF25X20CA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X20CA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm 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.
- BoreØ25 mm
- Stroke20 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF25X20CA
Delivering 192.8 N of push at 0.5 MPa, this AirTAC MSF25X20CA 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 and ensuring the rod fails to the retracted position on air loss. The JIS-standard riveted round-body construction, featuring a SUS304 stainless barrel and aluminium covers, is physically shorter than an equivalent ISO 6432 unit, saving valuable machine space.
The quoted thrust is already net of the return spring, which requires a minimum 0.2 MPa operating pressure to overcome. For practical sizing, this translates to a safe working load of roughly 116 N, or a vertical lift capacity of about 9.8 kg with a 2:1 safety margin. This specific SKU lacks a magnet and cannot accept position sensors; adding the -S option enables CMSG, DMSG, or EMSG switches. The included CA rear pivot cover complements its fixed TPU bumper pads for end-of-stroke deceleration.
Airtac MSF Single Acting Mini Cylinder MSF25X20CA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X20CA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 192.8 N |
| 0.7 MPa | 290.9 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 MSF25X20CA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | 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 MSF25X20CA Is Used
Spring-Return Clamping
Uses the 192.8 N thrust to secure light workpieces, automatically releasing them to the retracted position if air pressure drops.
Package Ejector Gate
Pushes lightweight items off a line with a 20 mm stroke, relying on the internal spring to clear the path between cycles.
Vertical Lift Stop
Raises a 9.8 kg load against gravity using the 0.5 MPa push force, safely lowering it when air is removed.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X20CA the Right Cylinder?
When sizing this 25 mm bore, compare it both ways: step down to the MSF20 for 117.5 N @0.5 MPa, or up to the MSF32 for 323.3 N @0.5 MPa. This model fits applications needing spring-return clamping or ejecting, provided the system pressure stays above the 0.2 MPa floor. The CA back cover provides a rear pivot point, and you can select LB, FA, SDB, or TC mounts. Remember that without the -S magnet option, this cylinder cannot host sensing switches.
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 MSF25X20CA FAQ
It generates 192.8 N of thrust at 0.5 MPa and 290.9 N at 0.7 MPa. These figures are net of the spring. It requires a minimum operating pressure of 0.2 MPa to overcome the return spring, up to a maximum of 1.0 MPa.
No. On air loss, the spring drives the rod to the retracted position; it cannot hold a mid-stroke load. For position sensing, you need the -S magnet variant to use CMSG, DMSG, or EMSG switches. This SKU has no magnet.
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