Airtac MFD Double Rod Miniature Cylinder MFD40X80
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD40X80 is a genuine double acting, double rod 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 typeDouble acting, double rod
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
About the Airtac MFD Double Rod Miniature Cylinder MFD40X80
Delivering 527.8 N of thrust at 0.5 MPa in both directions, the AirTAC MFD40X80 is a double-acting, double-rod mini cylinder built to JIS standards. A piston rod exits both aluminium covers, meaning output force is identical on extension and retraction because both sides use the rod-side area. The SUS304 stainless steel barrel shrinks overall mounting length compared to an ISO 6432 unit of the same bore and stroke, while resisting mild corrosion and washdown environments.
The twin Ø16 mm rods steady the load and resist rotation far better than a single-rod build, and the rear rod provides a ready mount for a stopper or secondary tool. This non-magnet SKU cannot take a sensor; add the -S option for CMSG, DMSG or EMSG switches. Operating on a 1/4" port at 30-800 mm/s, it yields a safe working load of about 317 N, or roughly 26.9 kg of vertical lift with a 2:1 margin. Fixed TPU bumper pads decelerate the stroke ends.
Airtac MFD Double Rod Miniature Cylinder MFD40X80 Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD40X80 |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Double acting, double rod |
| 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 | Fixed TPU bumper pads |
| Max standard stroke | Up to 300 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac MFD Double Rod Miniature Cylinder MFD40X80
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 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 MFD Double Rod Miniature Cylinder MFD40X80 Is Used
Twin-Tool Actuation
Drive two matched grippers or tools simultaneously using the 527.8 N equal force from both rod ends to balance pick-and-place cycles.
Anti-Rotation Slides
Prevent load twist on a 80 mm stroke transfer station; the dual Ø16 mm rods cut side-play better than a single-rod mini.
Back-Rod Switching
Use the protruding rear rod as a mechanical stopper or cam to trip a limit switch, leveraging the JIS compact body length.
Is the Airtac MFD Double Rod Miniature Cylinder MFD40X80 the Right Cylinder?
When sizing an MFD, compare the real 0.5 MPa figures: this 40 mm bore hits 527.8 N both ways, while the smaller MFD32 provides 345.6 N. Choose the 40 mm bore when moving heavier jigs or resisting high torque. The twin rods are ideal for anti-rotation slides or twin-tool actuation, but note that a plain cylinder drifts on air loss—the TPU pads only decelerate, so fit an external rod lock or pilot check valve for held loads. Mount via LB foot, FA flange or TC trunnion (no SDB or back-cover code exists here).
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 MFD Double Rod Miniature Cylinder MFD40X80 FAQ
It generates 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa, with a theoretical max of 107.6 kgf at 1.0 MPa. Force is equal both ways because it is a double-rod cylinder. The air port is 1/4 inch.
No, this specific SKU lacks a magnet and cannot take a switch. You must order the -S variant to use CMSG, DMSG or EMSG sensors. The twin rods resist rotation, and fixed TPU bumpers decelerate the stroke end.
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