Airtac MSF Single Acting Mini Cylinder MSF40X125CA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X125CA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 125mm stroke, 1/4" 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.
- BoreØ40 mm
- Stroke125 mm
- Port size1/4"
- Acting typeSingle acting, push (spring return)
- Rod threadM14×1.5
- 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 MSF40X125CA
Delivering a robust 535.3 N of push force at 0.5 MPa (786.5 N at 0.7 MPa), this 40 mm bore pneumatic actuator is built for heavy-duty clamping and ejection. As a single-acting push cylinder, compressed air entering the 1/4" port extends the 16 mm rod, while an internal spring handles the return. This means you only plumb one air line, and the cylinder fails safely to the retracted position on air loss. The quoted force is already net of the return spring.
Because it is a JIS-standard round-body mini cylinder with a riveted SUS304 stainless barrel and aluminium covers, the overall envelope is shorter than an ISO 6432 unit for the same 125 mm stroke. The SUS304 construction resists mild corrosion and washdown. This specific SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without switching to the -S variant. For practical sizing, expect a safe working load around 321 N, or a vertical lift capacity of roughly 27.3 kg with a 2:1 margin.
Airtac MSF Single Acting Mini Cylinder MSF40X125CA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X125CA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 535.3 N |
| 0.7 MPa | 786.5 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 MSF40X125CA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | 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 MSF40X125CA Is Used
Heavy Duty Clamping
Use the 535.3 N push output to secure heavy metal castings during machining, relying on the spring return to release the part automatically.
Package Diverting Gate
Actuate a routing flap on a packaging line; the single air line simplifies valve requirements while the CA pivot accommodates the swing motion.
Product Ejection
Push finished goods off a conveyor with a safe working load of 321 N, ensuring the rod retracts cleanly when air is removed.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X125CA the Right Cylinder?
When sizing this 40 mm bore, evaluate both ends of the force curve. If 535.3 N at 0.5 MPa is excessive, the smaller MSF32 offers 323.3 N; however, this MSF40 is the largest available bore in the series, so higher force demands require a different cylinder family. Maintain a minimum operating pressure of 0.2 MPa to overcome the internal return spring. This model features a CA rear pivot cover, making it ideal for pivoting clevis mounts, and uses fixed TPU bumper pads for end-of-stroke deceleration across its 50-800 mm/s speed range.
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 MSF40X125CA FAQ
It generates 535.3 N of push force at 0.5 MPa and 786.5 N at 0.7 MPa. The operating pressure ranges from 0.2 MPa to 1.0 MPa, but you must maintain at least 0.2 MPa to overcome the internal return spring.
No, this specific SKU does not include a magnet and cannot support CMSG, DMSG, or EMSG switches. You would need the -S variant for position sensing. It also uses fixed TPU bumper pads rather than an adjustable air cushion.
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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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