Airtac MSF Single Acting Mini Cylinder MSF40X80SCM
The AirTAC Airtac MSF Single Acting Mini Cylinder MSF40X80SCM 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 MSF40X80SCM
Delivering 535.3 N of push force at 0.5 MPa, this AirTAC MSF40X80SCM mini cylinder uses compressed air to extend the rod and an internal spring to retract it. Because it is single-acting, you only need to plumb one 1/4" port, simplifying valve requirements. The quoted force is already net of the return spring, and the design fails safely to the retracted position upon air loss. It features a JIS-standard SUS304 stainless round body with riveted aluminium covers, offering a shorter mounting envelope than an ISO 6432 unit of the same bore.
For this 40 mm bore class, the safe working load is approximately 321 N, which translates to clamping or vertically lifting about 27.3 kg with a 2:1 safety margin. The CM round-end back cover and fixed TPU bumper pads manage end-of-stroke impact across the 80 mm travel. To add position sensing, the -S suffix denotes a built-in piston magnet ready for CMSG, DMSG, or EMSG switches.
Airtac MSF Single Acting Mini Cylinder MSF40X80SCM Technical Specifications
| Model | Airtac MSF Single Acting Mini Cylinder MSF40X80SCM |
|---|---|
| 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 MSF40X80SCM
| 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 MSF40X80SCM Is Used
Heavy-Duty Clamping
Uses the 535.3 N extend force to secure heavy metal workpieces during machining, automatically releasing parts when air is cut.
Part Ejection
Pushes finished products off a conveyor line with a safe 321 N working load, relying on the spring to retract the 16 mm rod clear of the belt.
Vertical Lifting
Raises lightweight pallets or bins up to 27.3 kg against gravity, safely lowering the load to the retracted rest state if the air supply drops.
Is the Airtac MSF Single Acting Mini Cylinder MSF40X80SCM the Right Cylinder?
Choose this 40 mm bore when a smaller MSF32 (323.3 N at 0.5 MPa) lacks the necessary thrust, as this is the largest bore available in the MSF series. It is ideal for spring-return clamping, ejection, or gating tasks where air pressure only needs to drive the outward stroke. Remember the working pressure floor is 0.2 MPa; below that, the internal spring overcomes the air and prevents extension. Pair it with LB foot, FA flange, SDB pivot, or TC trunnion mounts to suit 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 MSF40X80SCM FAQ
It provides a net push force of 535.3 N at 0.5 MPa and 786.5 N at 0.7 MPa. The operating pressure ranges from 0.2 to 1.0 MPa, but you must maintain at least 0.2 MPa to overcome the return spring.
No, the spring constantly drives the rod to the retracted position when air is released, so it cannot hold a mid-stroke load. For mid-stroke holding, use a double-acting MF cylinder with an external rod lock. The -S magnet allows CMSG/DMSG/EMSG sensors to track end positions.
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