Airtac MSF Single Acting Mini Cylinder MSF40X40CM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X40CM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 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 MSF40X40CM
Delivering a robust 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X40CM mini cylinder is built for single-acting operation where air extends the rod and an internal spring handles the retraction. Because you only pipe one 1/4" port, valve complexity drops, and the unit fails safely to the retracted position on air loss. The SUS304 stainless round-body and riveted aluminium covers shrug off mild washdowns while saving mounting length compared to an ISO 6432 unit.
The quoted output is already net of the return spring, meaning you get that full force at the rod. For practical sizing, expect a safe working load around 321 N, or enough to vertically lift and hold about 27 kg with a 2:1 margin. This specific SKU lacks the -S magnet, so it cannot host CMSG, DMSG, or EMSG sensors, and it features a CM round-end rear cover along with fixed TPU bumper pads to soften stroke ends.
Airtac MSF Single Acting Mini Cylinder MSF40X40CM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X40CM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MSF40X40CM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 MSF40X40CM Is Used
Heavy Part Ejection
Uses the 535.3 N push output to positively eject dense molded parts from a press, relying on the spring to reset the rod between cycles.
Secure Work Clamping
Holds heavy workpieces against a stop with roughly 321 N of safe working force, automatically releasing the clamp if air pressure drops.
Vertical Lift Gates
Raises lightweight material handling gates with its 27 kg vertical lift capacity, using the spring return to safely lower the gate on shutdown.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X40CM the Right Cylinder?
When sizing this 40 mm bore, check both directions: if 535.3 N at 0.5 MPa is excessive, step down to the MSF32 which provides 323.3 N. As this is the largest available MSF bore, you cannot size up within the series. Ensure your supply stays at or above the 0.2 MPa floor, otherwise the internal spring will overpower the air and prevent extension. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets to suit your layout. If your application requires position sensing, select the -S magnet variant to enable CMSG, DMSG, or EMSG switches.
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 MSF40X40CM 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. It requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring and extend the rod.
No, this specific SKU does not include a magnet. You must choose the -S variant to use CMSG, DMSG, or EMSG position switches. Additionally, remember the spring only returns the rod to rest; it will not hold a mid-stroke load.
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