Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125CM
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125CM 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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125CM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting mini cylinder handles heavy loads with precision. The MFC40X125CM features a variable air cushion at both ends, letting you dial in the needle valve to absorb high-speed end-of-stroke shock, protecting your machinery and cutting noise. Its JIS-standard round-body construction uses a SUS304 stainless barrel with riveted aluminium covers, resisting mild corrosion and washdown environments.
For the same bore and stroke, this riveted design is noticeably shorter than an ISO 6432 cylinder, saving valuable mounting space. Equipped with a CM round-end rear cover and a 1/4" port, it yields a safe working load of about 377 N. This translates to lifting roughly 32 kg vertically with a 2:1 safety margin. Note that this specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG position switches.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125CM Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125CM |
|---|---|
| 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 MFC40X125CM
| 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 MFC40X125CM Is Used
Heavy Carton Diversion
Pushes heavy packaged goods across a high-speed sorting line, using the adjustable air cushion to stop the 125 mm stroke gently without jarring the belt.
Clamp Actuation
Provides 628.3 N of clamping thrust for holding aluminium extrusions during machining, decelerating smoothly at the stroke end to prevent denting the workpiece.
Vertical Lift Gate
Raises a 30 kg access panel on a packaging machine, safely within the 32 kg vertical lift capacity, while the SUS304 barrel withstands periodic washdowns.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125CM the Right Cylinder?
When sizing this 40 mm bore, evaluate your motion profile both ways: 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 entirely. The adjustable air cushion is essential when driving heavy payloads at high speeds up to 800 mm/s, as it decelerates the piston smoothly before impact.
Remember that the cushion needle only slows the piston near the stroke end—it is not a braking device. Because a standard cylinder drifts when air pressure drops or a valve centers, you must add an external rod lock or pilot-operated check valve to hold a suspended load safely. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion blocks to fit 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 0.15 – 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 MFC40X125CM FAQ
This 40 mm bore cylinder has a 1/4" air port and an M14x1.5 male rod thread. 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.
This SKU lacks the internal magnet, so it cannot accept CMSG, DMSG, or EMSG switches; you need the -S variant for sensing. The variable air cushion only decelerates the piston near the stroke end to reduce shock—it is not a lock or brake, so use an external rod lock or pilot check valve to hold loads safely.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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