Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCMLB
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCMLB 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 MFC40X125SCMLB
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty motion within a compact footprint. The MFC40X125SCMLB features a 40 mm bore, a 125 mm stroke, and a 1/4" port. For the same bore and stroke, the riveted SUS304 stainless barrel and aluminium cover construction is shorter than an ISO 6432 cylinder, saving valuable machine space without sacrificing strength.
A defining feature is the variable air cushion at both ends; a needle valve soaks up high-speed end-of-stroke shock to protect the load and cut noise. The built-in piston magnet (-S) supports CMSG, DMSG, and EMSG switches for position sensing. Based on the 0.5 MPa push rating, it provides a safe working load of about 377 N, meaning it lifts roughly 32 kg vertically with a 2:1 safety margin.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCMLB Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCMLB |
|---|---|
| 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 MFC40X125SCMLB
| 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 MFC40X125SCMLB Is Used
Heavy Package Diversion
Uses the 628.3 N thrust to push heavy cartons off a high-speed belt, relying on the variable air cushion to stop the 125 mm stroke smoothly without slamming.
Press Ejection
Ejects dense metal or plastic parts from a press bed, where the SUS304 stainless barrel resists mild coolant splash and the LB foot mount handles the recoil.
Pallet Positioning
Shifts loaded pallets laterally with a safe working load near 377 N, using the CM round-end cover and adjustable end cushions to absorb the mass at high velocity.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCMLB the Right Cylinder?
If 628.3 N at 0.5 MPa is excessive, step down to the MFC32 bore, which provides 402.2 N of push force; since 40 mm is the largest available MFC bore, moving up requires switching to a different series entirely. Choose this 40 mm model for high-speed cycles where the adjustable needle cushion is critical to prevent harsh impacts. The CM round-end rear cover and LB foot mounting accessory allow stable base installation.
Position holding is not possible on air loss or valve centring, as the piston drifts and the cushion only decelerates near the stroke end rather than acting as a brake. For suspended loads, add an external rod lock or pilot-operated check valve. The -S magnet enables electronic or reed sensors, whereas a standard SKU without the S suffix cannot accept them.
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 MFC40X125SCMLB FAQ
This 40 mm bore double-acting cylinder features a 1/4" port and a 16 mm piston rod. It delivers 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
No, the piston will drift on air loss or when the valve is centred. The variable air cushion only decelerates the piston near the stroke end and does not act as a lock or brake. For vertical loads, install an external rod lock or pilot check valve.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X125SCMLB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.