Airtac MSF Single Acting Mini Cylinder MSF40X50CM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X50CM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 50mm 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
- Stroke50 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 MSF40X50CM
Delivering 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X50CM mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only plumb one 1/4" port, which simplifies valve requirements. The SUS304 stainless round body and riveted aluminium covers form a compact JIS-standard assembly that is physically shorter than an equivalent ISO 6432 unit, saving valuable machine space.
The quoted force is already net of the return spring, meaning you get the full 535.3 N for clamping or ejecting. For a reliable setup, expect a safe working load of roughly 321 N, or a vertical lift capacity of about 27.3 kg with a 2:1 margin. This specific SKU lacks the -S magnet option, so it cannot accept CMSG, DMSG, or EMSG position sensors. It features a CM round-end rear cover and fixed TPU bumper pads to soften end-of-stroke impacts.
Airtac MSF Single Acting Mini Cylinder MSF40X50CM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X50CM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MSF40X50CM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 MSF40X50CM Is Used
Heavy-Duty Clamping
Uses the 535.3 N push force to secure heavy metal workpieces during machining, with the spring ensuring the clamp retracts safely if air pressure drops.
Part Ejection
Pushes finished products off a conveyor line with authority, relying on the single 1/4" air port to drive the stroke and the internal spring to reset the rod.
Pallet Gating
Acts as a stout stop gate for heavy pallets, holding roughly 27.3 kg of vertical load with a 2:1 margin before retracting to release the flow.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X50CM the Right Cylinder?
When sizing this 40 mm bore unit, compare it directly against the MSF32, which provides 323.3 N of push at 0.5 MPa. If your application requires more than 323.3 N but less than 535.3 N, this model is the correct choice, as 40 mm is the largest bore available in the MSF series. Ensure your air supply stays at or above the 0.2 MPa floor; below this pressure, the internal spring will overpower the air and prevent extension.
This spring-return configuration is ideal for clamping, ejecting, or gating tasks where the load must return to a safe rest position upon air loss. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets. If you need position feedback, select the -S magnet variant instead, as this non-magnet version cannot host a sensor.
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 MSF40X50CM FAQ
It generates 535.3 N of push force at 0.5 MPa and 786.5 N at 0.7 MPa. These figures are net of the return spring. The operating pressure range is 0.2 to 1.0 MPa, and you must maintain at least 0.2 MPa to overcome the 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 magnetic switches. Additionally, the spring drives the rod to the retracted position on air loss, so it cannot hold a mid-stroke load.
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