Airtac MSF Single Acting Mini Cylinder MSF40X15SCA
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X15SCA is a genuine single acting, push (spring return) JIS-standard round-body mini air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 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 MSF40X15SCA
Delivering a robust 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X15SCA mini cylinder is engineered for single-acting operation where air extends the rod and an internal spring handles the retraction. Because you only plumb one 1/4 inch port, valve complexity drops, and the unit naturally defaults to its retracted rest state if air pressure is lost. The SUS304 stainless round barrel and riveted aluminium covers form a compact JIS-standard body that is notably shorter than an ISO 6432 cylinder of the same bore and stroke.
The quoted thrust is already net of the return spring, meaning you get that full force at the workface, but you must supply at least 0.2 MPa to overcome the spring bias. For practical sizing, this translates to a safe working load of roughly 321 N, or a vertical lift capacity of about 27.3 kg when applying a 2:1 safety margin. This specific SKU includes a built-in piston magnet (-S) for position sensing and a CA rear pivot cover, while fixed TPU bumper pads absorb end-of-stroke impacts across its 50-800 mm/s speed range.
Airtac MSF Single Acting Mini Cylinder MSF40X15SCA Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X15SCA |
|---|---|
| Series | MSF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 MSF40X15SCA
| MSF | JIS-standard round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 MSF40X15SCA Is Used
Heavy-Duty Part Ejection
Uses the 535.3 N push stroke to positively eject dense machined metal components from a fixture, relying on the spring to safely withdraw the pin between cycles.
Pallet Deflection Gate
Extends a 15 mm stroke to block or divert heavy pallets on a line, with the CA pivot allowing slight angular alignment during the stopping action.
Vertical Lift Stop
Raises a light 27 kg product stack into a processing position, returning to a safe lowered rest state automatically via the internal spring upon air loss.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X15SCA the Right Cylinder?
When sizing this 40 mm bore unit, compare its 535.3 N @0.5 MPa output directly against the next size down: the MSF32 provides 323.3 N @0.5 MPa, making this model the correct choice when that smaller bore runs out of thrust. As 40 mm is the largest available MSF bore, you cannot step up further within this series for higher force requirements. It fits best in spring-return clamping, ejection, or gating tasks where the load cannot be driven on the retract stroke. Ensure your air supply stays above the 0.2 MPa floor so the spring does not win, pair it with CMSG, DMSG or EMSG sensors via the -S magnet, and mount it using the integrated CA back cover or standard LB, FA, SDB, TC hardware.
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 MSF40X15SCA 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. 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. The internal spring drives the rod to the fully retracted position if air is lost; it is not a controllable brake and cannot hold an arbitrary mid-stroke load. For mid-stroke holding you need a double-acting MF cylinder with an external rod lock. This unit uses fixed TPU bumper pads for end damping, not an adjustable air cushion.
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