Airtac MSF Single Acting Mini Cylinder MSF25X55CA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF25X55CA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø25mm bore and 55mm 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
- Stroke55 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM10×1.25
- 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 MSF25X55CA
Delivering 192.8 N of push force at 0.5 MPa (290.9 N at 0.7 MPa), this JIS-standard round-body mini cylinder uses a single air line to extend the rod while an internal spring handles the retraction. The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments. Because the spring constantly pulls the rod back, the quoted thrust is already net of that spring tension, meaning it cannot be loaded on the return stroke.
For a 25 mm bore and 55 mm stroke, this unit is notably shorter than a comparable ISO 6432 cylinder, saving valuable mounting length. It features a 1/8 inch port, a Ø10 mm piston rod with an M10x1.25 male thread, and fixed TPU bumper pads for end-of-stroke deceleration across its 50-800 mm/s speed range. The rear CA pivot cover simplifies articulated mounting. As a safe working load, expect roughly 116 N (about 60% of the 0.5 MPa rating), which translates to clamping or vertically lifting around 9.8 kg with a 2:1 safety margin. This non-magnet SKU cannot host a position sensor; adding the -S option enables CMSG, DMSG, or EMSG switches.
Airtac MSF Single Acting Mini Cylinder MSF25X55CA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF25X55CA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 55 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 MSF25X55CA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×55 | 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 MSF25X55CA Is Used
Spring-Return Clamping
Uses the 192.8 N thrust at 0.5 MPa to secure parts during machining, automatically releasing to the retracted position when air is removed.
Package Ejector Gate
Pushes light cartons off a line with a safe working load of roughly 116 N, relying on the internal spring to retract the 55 mm stroke quickly.
Vertical Lift Stop
Raises a 9.8 kg fixture against gravity using a 2:1 safety margin, with the CA pivot cover allowing articulated rod alignment.
Is the Airtac MSF Single Acting Mini Cylinder MSF25X55CA the Right Cylinder?
When sizing this 25 mm bore, compare it directly against its neighbours: the MSF20 provides 117.5 N at 0.5 MPa, while the MSF32 offers 323.3 N at 0.5 MPa. Choose this model when your application requires a spring-return action, such as clamping, ejecting, or gating, where air loss safely drives the rod back to its retracted rest position. You must supply at least 0.2 MPa of operating pressure to overcome the internal spring; the maximum rated pressure is 1.0 MPa. Mounting is versatile via the CA rear pivot, FA flange, LB foot, SDB pivot-block, or TC trunnion. Remember that a double-acting MF with an external rod lock is required if you need to hold a load at a mid-stroke position.
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 MSF25X55CA FAQ
The single-acting push force is 192.8 N at 0.5 MPa and 290.9 N at 0.7 MPa. Because it is spring-return, the force is net of the spring, and you must supply at least 0.2 MPa of air pressure to overcome the spring and extend the rod.
No, this specific SKU lacks a magnet and cannot host CMSG, DMSG, or EMSG switches; you must select the -S variant for sensing. It also uses fixed TPU bumper pads rather than an adjustable air cushion, and the spring drives the rod to the retracted position on air loss without holding mid-stroke.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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