Airtac MSF Single Acting Mini Cylinder MSF25X125CM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X125CM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm 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.
- BoreØ25 mm
- Stroke125 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 MSF25X125CM
Delivering 192.8 N of push at 0.5 MPa, this single-acting mini 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 unit fails to its retracted rest position on air loss. The CM round-end rear cover suits tight pivot layouts.
Built as a JIS-standard round-body with a SUS304 stainless barrel and riveted aluminium covers, it is shorter than an ISO 6432 cylinder of the same bore and stroke, saving mounting length. The quoted force is already net of the return spring, yielding a safe working load of about 116 N or a 9.8 kg vertical lift with a 2:1 margin. This base SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG switches; order the -S variant for sensing.
Airtac MSF Single Acting Mini Cylinder MSF25X125CM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X125CM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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 MSF25X125CM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | 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 MSF25X125CM Is Used
Spring-Return Clamping
Extends under air to clamp parts with roughly 116 N of safe force, then releases automatically when air is removed.
Product Ejection
Pushes light items off a line using the 192.8 N output at 0.5 MPa, relying on the internal spring to reset the rod.
Vertical Lift Gates
Raises a 9.8 kg gate against gravity with a 2:1 safety margin, dropping it back safely upon venting the single port.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X125CM the Right Cylinder?
If 192.8 N at 0.5 MPa is excessive, step down to the MSF20 which provides 117.5 N; if your clamp needs more force, the MSF32 delivers 323.3 N. You must supply at least 0.2 MPa to overcome the return spring before the rod moves. This model uses fixed TPU bumper pads for end-of-stroke damping rather than an adjustable air cushion, and it runs 50-800 mm/s.
Mounting options include LB foot, FA flange, SDB pivot and TC trunnion brackets. Remember that without the -S magnet option, this cylinder cannot accept position 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 MSF25X125CM FAQ
It generates 192.8 N of push at 0.5 MPa and 290.9 N at 0.7 MPa. These figures are net of the internal spring. You must apply at least 0.2 MPa of air pressure to overcome the spring before the rod extends.
No. On air loss the spring drives the rod to the fully retracted position; it cannot hold an arbitrary mid-stroke load (use a double-acting MF with an external rod lock for that). Also, this specific SKU has no magnet, so it cannot host CMSG, DMSG or EMSG switches.
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