Airtac MSF Single Acting Mini Cylinder MSF40X100SU
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X100SU is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 mm
- Port size1/4"
- Acting typeSingle acting, push (spring return)
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MSF Single Acting Mini Cylinder MSF40X100SU
Delivering 535.3 N of push force at 0.5 MPa (786.5 N at 0.7 MPa), this MSF40X100SU is a JIS-standard round-body mini cylinder built for single-acting push operations. Air extends the 16 mm rod out to the 100 mm stroke, while an internal spring retracts it, meaning you only need to plumb a single 1/4 inch port. The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments.
Because the spring constantly pulls, the quoted force is already net of that resistance; you must supply at least 0.2 MPa of air pressure for the piston to overcome the spring and move. For sizing, this yields a safe working load of about 321 N, or a vertical lift capacity of roughly 27.3 kg with a 2:1 safety margin. The included -S magnet enables position sensing with CMSG, DMSG, or EMSG switches, and the U flat-end back cover simplifies direct rear mounting.
Airtac MSF Single Acting Mini Cylinder MSF40X100SU Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X100SU |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 MSF40X100SU
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 MSF40X100SU Is Used
Package Diverting Gate
Uses the 535.3 N push force to swing a heavy routing gate on a packaging line, with the spring automatically closing the gate when air is removed.
Heavy Part Ejection
Ejects dense machined components from a fixture, relying on the 100 mm stroke and safe working load of 321 N to clear the work area reliably.
Pallet Stopper Arm
Acts as a robust pneumatic stop for incoming pallets, extending to halt movement and retracting safely to release the flow when signaled.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X100SU the Right Cylinder?
When sizing this 40 mm bore, compare its 535.3 N @0.5 MPa output against the next size down: the MSF32 provides 323.3 N @0.5 MPa, which is often insufficient for heavier ejection duties. Since 40 mm is the largest bore in the MSF family, moving beyond this capacity requires a different cylinder series. Choose this single-acting spring-return model for clamping, gating, or ejecting tasks where the load must return to a safe retracted position upon air loss. It operates between 0.2 and 1.0 MPa, and you can pair it with LB foot, FA flange, SDB pivot, or TC trunnion mounts to fit your frame.
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 MSF40X100SU FAQ
This 40 mm bore cylinder generates 535.3 N of push force at 0.5 MPa and 786.5 N at 0.7 MPa. Because it is single-acting with a spring return, it requires a minimum operating pressure of 0.2 MPa to overcome the internal spring, with a maximum pressure of 1.0 MPa.
No, the internal spring drives the rod to the retracted position on air loss, so it cannot hold an arbitrary mid-stroke load. For mid-stroke holding, use a double-acting MF cylinder with an external rod lock. This unit uses fixed TPU bumper pads for end-of-stroke deceleration and includes a magnet for CMSG/DMSG/EMSG sensors.
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