Airtac MSF Single Acting Mini Cylinder MSF40X80CM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X80CM is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 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 MSF40X80CM
Delivering 535.3 N of push force at 0.5 MPa (786.5 N at 0.7 MPa), this 40 mm bore mini cylinder uses compressed air to extend the rod while an internal spring handles the retraction. Because it is single-acting, you only plumb one 1/4" port, which simplifies valve requirements and ensures the rod fails safely to the retracted position on air loss. The force rating is already net of the return spring.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, the assembly is shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable machine space. The rear features a CM round-end cover. For this bore, the safe working load is approximately 321 N, and it can vertically lift about 27.3 kg with a 2:1 margin. Note that this specific SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without switching to an -S variant.
Airtac MSF Single Acting Mini Cylinder MSF40X80CM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X80CM |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 MSF40X80CM
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 MSF40X80CM Is Used
Heavy Duty Clamping
Uses the 535.3 N push force to secure heavy metal workpieces for machining, with the spring safely retracting the clamp when air is removed.
Part Ejection
Pushes finished products off a conveyor belt using a single 1/4" air line, relying on the internal spring to reset the pusher arm.
Pallet Gating
Acts as a robust pallet stop gate, holding back loads up to 27.3 kg vertically before releasing them upon spring retraction.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X80CM the Right Cylinder?
When sizing this 40 mm model, verify your motion profile works within its 535.3 N push at 0.5 MPa. If your application requires less force, the smaller MSF32 bore provides 323.3 N at 0.5 MPa; since 40 mm is the largest available MSF bore, exceeding 786.5 N at 0.7 MPa requires a different cylinder family. Single-acting push types excel at spring-return clamping, ejecting, or gating tasks where air pressure only drives one direction.
Maintain a minimum operating pressure of 0.2 MPa to overcome the internal spring, up to a maximum of 1.0 MPa. End-of-stroke deceleration relies on fixed TPU bumper pads rather than an adjustable cushion. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion, but remember this non-magnet version cannot support position sensing.
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 MSF40X80CM FAQ
The 40 mm bore 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 return spring, with a maximum pressure of 1.0 MPa and a proof pressure of 1.5 MPa.
No, this SKU does not include a magnet, so it cannot support CMSG, DMSG, or EMSG switches; you need the -S variant for sensing. Additionally, the spring only drives the rod to the retracted rest position on air loss—it cannot hold a mid-stroke load. Use a double-acting MF with an external rod lock for position holding.
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