Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X250SU
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X250SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 MFC40X250SU
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MFC40X250SU is a JIS-standard round-body mini cylinder built for demanding actuation. It features a SUS304 stainless barrel and riveted aluminium covers that resist mild corrosion and washdown environments. The -S suffix equips the piston with a magnet for CMSG, DMSG or EMSG switches, while the U flat-end rear cover provides a clean flush mount. A 1/4" port supplies the 16 mm rod.
A defining trait of the MFC series is the variable air cushion at both ends: a needle valve lets you tune the deceleration to absorb high-speed end-of-stroke shock, protecting the load and lowering noise. For the same bore and stroke, this riveted body is shorter than an ISO 6432 cylinder, saving valuable mounting length. With a safe working load around 377 N, it lifts about 32 kg vertically with a 2:1 margin.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X250SU Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X250SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 MFC40X250SU
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 MFC40X250SU Is Used
High-Speed Carton Diverting
Uses the 628.3 N push force to deflect heavy packages on a sorter, relying on the tuned air cushion to prevent harsh slamming at 800 mm/s.
Vertical Material Lowering
Lowers approximately 32 kg of raw stock down a 250 mm stroke, using the U flat-end mount and variable cushion to soften the final landing impact.
Pallet Pressing Station
Applies steady clamping pressure on a packaging line, where the SUS304 barrel withstands incidental washdown and the -S magnet confirms stroke endpoints.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X250SU the Right Cylinder?
When sizing this 40 mm bore, step down to the MFC32 if your task only needs 402.2 N of push at 0.5 MPa, as 40 mm is the largest available option in the series. The adjustable air cushion is essential when driving heavy loads at high speeds, allowing you to dial in the exact end-of-stroke deceleration. Remember that the cushion only slows the piston near the end of travel and does not function as a brake; if air pressure drops, the piston will drift. To suspend a load securely, fit an external rod lock or a pilot-operated check valve.
Mounting flexibility is broad, with LB foot, FA flange, SDB pivot and TC trunnion brackets available. The included -S magnet enables solid-state or reed sensor tracking, and the U back cover suits tight rear-clearance installations.
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 MFC40X250SU 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, or 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 stroke end and acts purely as a shock absorber, never as a lock or brake; the piston will drift on air loss. Use an external rod lock or pilot check valve for load holding. The -S suffix indicates a built-in piston magnet for installing CMSG, DMSG or EMSG switches.
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 MFC40X250SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.