Airtac MSF Single Acting Mini Cylinder MSF25X20CM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X20CM 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 MSF25X20CM
Generating 192.8 N of push force 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 pipe and valve one 1/8" port, which simplifies automation. The quoted force is already net of the return spring, and the unit requires at least 0.2 MPa of air pressure to overcome that spring. Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it is shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable mounting length. This specific configuration includes a CM round-end rear cover and a 20 mm stroke.
For practical sizing, expect a safe working load of about 116 N (roughly 60% of the 0.5 MPa rating) or a vertical lift capacity of about 9.8 kg with a 2:1 safety margin. Note that this SKU lacks the -S magnet option, so it cannot accept CMSG, DMSG, or EMSG position sensors. End-of-stroke deceleration is handled by fixed TPU bumper pads rather than an adjustable air cushion. On air loss, the spring drives the rod to the retracted position; it will not hold a mid-stroke load.
Airtac MSF Single Acting Mini Cylinder MSF25X20CM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X20CM |
|---|---|
| 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 MSF25X20CM
| 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 MSF25X20CM Is Used
Short-Stroke Clamping
Uses the 192.8 N push force to hold light workpieces against a stop, with the spring safely retracting the rod when air is removed.
Part Ejector
Pushes finished parts off a conveyor belt in a 20 mm stroke, relying on the single-acting spring return to keep the path clear at rest.
Bin Diverter Gate
Actuates a short diverter flap with enough force to redirect small items, failing safely to the closed position if the air supply drops.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X20CM the Right Cylinder?
If 116 N of safe push is insufficient, step up to the MSF32 bore, which provides 323.3 N at 0.5 MPa; if your clamp or gate needs less force, the MSF20 offers 117.5 N at 0.5 MPa. Single-acting spring-return cylinders are ideal for ejection and clamping tasks where the load must return to a safe start position upon air loss. Remember the 0.2 MPa minimum operating pressure floor—below that, the spring wins and the rod will not extend. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets to suit your frame. Because this specific SKU lacks the -S magnet, you cannot mount magnetic sensors; if you need position feedback, select an -S variant instead.
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 MSF25X20CM FAQ
The single-acting push force is 192.8 N at 0.5 MPa and 290.9 N at 0.7 MPa. These figures are net of the return spring. It requires a minimum operating pressure of 0.2 MPa to overcome the spring and has a maximum pressure of 1.0 MPa.
No, this SKU does not include the -S magnet option, so it cannot accept CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. The rod is driven to the retracted position by the spring on air loss, so it does not hold mid-stroke loads without a double-acting MF and external rod lock.
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