Airtac MFD Double Rod Miniature Cylinder MFD40X150S
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD40X150S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 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 MFD40X150S
Delivering 527.8 N of thrust in both directions at 0.5 MPa, the AirTAC MFD40X150S is a JIS-standard round-body mini cylinder built for equal push and pull power. The SUS304 stainless steel barrel and riveted aluminium covers form a compact body that is notably shorter than an ISO 6432 unit of the same bore and stroke, saving valuable machine space while resisting mild washdown corrosion.
Because a 16 mm piston rod exits both covers, the twin rods naturally resist side-play and rotation. The rear rod provides a ready mount for a second tool, a stopper, or a switching flag. This -S variant includes a built-in piston magnet for CMSG, DMSG or EMSG sensors, and uses a 1/4" air port. With a safe working load around 317 N, it handles about 26.9 kg vertically each way with a 2:1 margin.
Airtac MFD Double Rod Miniature Cylinder MFD40X150S Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD40X150S |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MFD40X150S
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MFD40X150S Is Used
Twin-Tool Transfer
With equal 527.8 N force both ways, use the front rod to push and the rear rod to pull a secondary tool simultaneously over the 150 mm stroke.
Anti-Rotation Guide
The dual 16 mm rods resist side-play and twist, keeping a 26.9 kg vertical lift steady without needing an external linear guide.
Rear Rod Flag Tracking
The extended back rod offers a clear mounting point for a switching flag, while the -S magnet allows precise CMSG or DMSG sensor placement.
Is the Airtac MFD Double Rod Miniature Cylinder MFD40X150S the Right Cylinder?
When sizing a double-rod unit, compare this 40 mm bore against the smaller MFD32, which yields 345.6 N at 0.5 MPa. The MFD40X150S provides a stronger 527.8 N both ways, making it better for heavier slides. The twin rods excel in anti-rotation tasks and twin-tool actuation where equal force is required.
Mounting options include LB foot, FA flange, and TC trunnion brackets, but there is no SDB mount or back-cover code because a rod exits both ends. Note that fixed TPU bumper pads only decelerate the stroke end; the cylinder will drift on air loss. For a held load, add an external rod lock or pilot check valve.
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 MFD40X150S FAQ
It delivers equal force both ways: 527.8 N at 0.5 MPa, 738.9 N at 0.7 MPa, and a theoretical max of 107.6 kgf at 1.0 MPa. The bore-fixed air port is 1/4".
No, the piston will drift on air loss. The fixed TPU bumper pads only decelerate the stroke end and do not act as a brake. To hold a load, use an external rod lock or pilot-operated check valve.
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