Airtac MFD Double Rod Miniature Cylinder MFD40X275S
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD40X275S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø40mm bore and 275mm 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
- Stroke275 mm
- Port size1/4"
- Acting typeDouble acting, double rod
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MFD Double Rod Miniature Cylinder MFD40X275S
Twin rods exiting both covers give the AirTAC MFD40X275S equal thrust in both directions, outputting 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa. This JIS-standard round-body mini cylinder uses a SUS304 stainless barrel with riveted aluminium covers, offering a shorter mounting length than an ISO 6432 unit of the same size. The built-in magnet (-S) supports CMSG, DMSG and EMSG switches.
With a 40 mm bore and 1/4 inch port, it handles a safe working load of about 317 N or a 26.9 kg vertical lift with a 2:1 margin. The second rod steadies the load and resists rotation, while fixed TPU bumper pads decelerate the stroke ends across its 275 mm travel at 30-800 mm/s. Note that the piston drifts on air loss, so use an external rod lock for held loads.
Airtac MFD Double Rod Miniature Cylinder MFD40X275S Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD40X275S |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 275 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 MFD40X275S
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 MFD40X275S Is Used
Twin-Tool Actuation
Mount a secondary gripper on the rear rod to operate two stations simultaneously, utilising the 527.8 N equal thrust for balanced part transfer.
Anti-Rotation Guide Slide
The dual 16 mm rods resist torsional twist on long 275 mm strokes, keeping heavy jigs steady without needing an external guide rail.
Dual-End Sensing Setup
Use the -S magnet with EMSG switches on both covers to confirm position at either end of the stroke for strict sequencing control.
Is the Airtac MFD Double Rod Miniature Cylinder MFD40X275S the Right Cylinder?
Choose the MFD40 over the MFD32 when you need more push and pull, stepping up from 345.6 N to 527.8 N at 0.5 MPa. The double-rod design is ideal for anti-rotation slides or mounting a second tool and sensor flag on the back rod. Since a rod exits both ends, there is no back-cover code or SDB mount; use LB foot, FA flange or TC trunnion brackets. The -S magnet enables CMSG, DMSG and EMSG sensors, while fixed TPU bumpers manage end-of-stroke deceleration.
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 MFD40X275S FAQ
This double-acting, double-rod cylinder provides 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. It features a 1/4 inch air port and a 16 mm rod on each end.
The twin rods resist rotation and provide equal thrust in both directions, but the cylinder does not hold position on air loss and will drift. The -S magnet allows CMSG, DMSG and EMSG sensor switches, and fixed TPU bumper pads decelerate the stroke ends.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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