Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 125mm 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
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting mini cylinder handles heavy loads within a compact footprint. The variable air cushion at both ends lets you dial in the deceleration needle to absorb high-speed shocks, protecting your payload and cutting noise. For the same bore and stroke, this JIS-standard round-body design is shorter than an ISO 6432 cylinder, saving valuable mounting length.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, it resists mild corrosion and washdown environments. The CM round-end rear cover and 1/4" port streamline integration. Because the -S suffix denotes a built-in piston magnet, this unit is fully ready for CMSG, DMSG, or EMSG position switches. With a 628.3 N push rating, it yields a safe working load of about 377 N, easily lifting roughly 32 kg vertically with a 2:1 safety margin.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 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 | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM Is Used
Heavy Package Diversion
Pushes heavy cartons at high speed onto secondary lines; the adjustable air cushion prevents harsh impacts that could damage packaging.
Vertical Material Lowering
Lowers 25 kg workpieces smoothly; the needle-set deceleration brings the mass to a soft stop without jarring the assembly frame.
Pallet Strapping Press
Applies 377 N of safe clamping force to hold components during strapping, while the SUS304 barrel withstands dusty industrial environments.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM the Right Cylinder?
If 628.3 N at 0.5 MPa is excessive, step down to the MFC32, which provides 402.2 N; since 40 mm is the largest available MFC bore, moving up requires a different cylinder family. Choose this variable air cushion model over a fixed bumper when cycling at high speeds or moving heavy masses that demand smooth end-of-stroke deceleration.
Remember that the air cushion only slows the piston near the end of its travel—it does not function as a lock or brake. If your application must hold a load vertically during air loss or when a valve is centered, the piston will drift, so you must add an external rod lock or pilot-operated check valve. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets.
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 0.15 – 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 MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCM FAQ
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, the variable air cushion only decelerates the piston near the end of the stroke and acts purely as a shock absorber, never as a brake. If air loss occurs or the valve is centered, the piston will drift. You must install an external rod lock or pilot check valve to hold a vertical load safely.
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