Airtac MFD Double Rod Miniature Cylinder MFD40X75
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD40X75 is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 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 MFD40X75
Generating an equal 527.8 N of thrust in both directions at 0.5 MPa, the AirTAC MFD40X75 is a JIS-standard round-body mini cylinder built for non-rotating actuation. Because a piston rod exits both aluminium covers, the effective area is identical on extension and retraction. This riveted rolling-packed design uses a SUS304 stainless barrel to resist mild corrosion and washdowns, while delivering a shorter overall mounting length than a comparable ISO 6432 unit.
At this bore size, the twin 16 mm rods provide a steady guide that significantly cuts side-play versus a single-rod build, enabling precise twin-tool actuation. The back rod offers a ready mounting point for stoppers or secondary mechanisms. Operating at 30-800 mm/s on a 1/4" port, this non-magnet SKU cannot host a sensor; adding the -S variant enables CMSG, DMSG, or EMSG switches. For vertical lifting, expect a safe payload of about 26.9 kg each way with a 2:1 margin.
Airtac MFD Double Rod Miniature Cylinder MFD40X75 Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD40X75 |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MFD40X75
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 MFD40X75 Is Used
Twin-Tool Actuation
Drive two synchronized tooling heads from a single actuator using the 527.8 N equal thrust, ensuring both ends hit the workpiece with identical force.
Anti-Rotation Slides
Move a gripper carriage without rotational drift; the dual 16 mm rods resist side-play and keep the payload steady across the 75 mm stroke.
Back-Rod Switching
Mount a mechanical stopper or cam on the rear rod to trip a limit valve, using the opposing end for secondary automation tasks.
Is the Airtac MFD Double Rod Miniature Cylinder MFD40X75 the Right Cylinder?
When sizing an MFD, compare the both-ways force directly: this 40 mm bore delivers 527.8 N at 0.5 MPa, stepping up from the 345.6 N found on the MFD32. If your application requires equal push and pull forces alongside strict anti-rotation guidance, the twin rods here provide a distinct advantage over single-rod minis. Mounting options include LB foot, FA flange, and TC trunnion, with no SDB or back-cover code available due to the dual-rod construction.
Note that fixed TPU bumper pads decelerate the stroke ends but do not function as a lock. If air pressure drops, the piston will drift and cannot hold a load; for vertical or suspended loads, install an external rod lock or pilot-operated check valve. Furthermore, because this specific SKU lacks the -S magnet, it cannot accept position sensors.
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 MFD40X75 FAQ
The double-rod design yields equal force both ways using the rod-side area. It provides 527.8 N at 0.5 MPa, 738.9 N at 0.7 MPa, and a theoretical maximum of 107.6 kgf at 1.0 MPa. The air port size is 1/4".
No to both. Fixed TPU bumper pads only decelerate the stroke end; they do not lock, so the piston drifts on air loss. You need an external rod lock or pilot check valve for holding. Also, this SKU lacks a magnet, so it cannot take a sensor; you need the -S variant for CMSG, DMSG, or EMSG switches.
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