Airtac MFD Double Rod Miniature Cylinder MFD32X20S
The AirTAC Airtac MFD Double Rod Miniature Cylinder MFD32X20S is a genuine double acting, double rod JIS-standard round-body mini air cylinder with a Ø32mm bore and 20mm 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.
- BoreØ32 mm
- Stroke20 mm
- Port size1/4"
- Acting typeDouble acting, double rod
- Rod threadM10×1.25
- 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 MFD32X20S
Generating 345.6 N of thrust at 0.5 MPa in both directions, the AirTAC MFD32X20S is a JIS-standard round-body mini cylinder built for symmetrical actuation. Because a piston rod exits both covers, the output force remains identical on extension and retraction. This twin-rod geometry inherently resists rotation, steadying the load better than a single-rod build. The SUS304 stainless steel barrel shrinks overall mounting length compared to an ISO 6432 unit, while resisting mild washdown corrosion.
Equipped with a 1/4 inch air port and an integrated magnet, this MFD32X20S variant supports CMSG, DMSG, and EMSG electronic or reed switches. It uses fixed TPU bumper pads to decelerate the stroke ends rather than an adjustable air cushion. For vertical lifting, the 345.6 N output handles roughly 17.6 kg with a 2:1 safety margin, yielding a safe working load of about 207 N. Note that the piston drifts on air loss, so an external rod lock is required to hold a load.
Airtac MFD Double Rod Miniature Cylinder MFD32X20S Technical Specifications
| Model | Airtac MFD Double Rod Miniature Cylinder MFD32X20S |
|---|---|
| Series | MFD JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 20 mm |
| Acting type | Double acting, double rod |
| Port size | 1/4" |
| Rod thread | M10×1.25 |
| 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 (Ø32mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 346 N |
| 0.7 MPa | 484 N |
| Max (@1.0 MPa) | 70 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 MFD32X20S
| MFD | JIS-standard round-body mini cylinder (double-rod). |
|---|---|
| 32 | Bore size in mm. |
| ×20 | 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 MFD32X20S Is Used
Anti-Rotation Slides
The twin rods prevent twisting during short 20 mm traverse moves, keeping precision slides aligned under a 207 N safe working load.
Twin-Tool Actuation
Mount a secondary gripper on the rear rod to operate two stations simultaneously with the equal 345.6 N bidirectional thrust.
Back-Rod Switching
Use the exiting rear rod to trip an external limit switch, leveraging the built-in magnet for CMSG or DMSG sensors.
Is the Airtac MFD Double Rod Miniature Cylinder MFD32X20S the Right Cylinder?
Choosing between the available bores means weighing the 206.1 N thrust of the MFD25 against the 527.8 N capacity of the MFD40. The 32 mm bore here delivers 345.6 N at 0.5 MPa, offering a strong middle ground. The double-rod design is specifically selected when you need anti-rotation stability or want to mount a secondary tool and sensor flag on the back rod.
Since this SKU includes the -S magnet, it is fully ready for CMSG, DMSG, or EMSG sensors. You can mount it using LB foot, FA flange, or TC trunnion brackets. Remember that the fixed TPU bumpers only decelerate the stroke end; they do not act as a brake, so add a pilot-operated check valve if you need to prevent drift on air loss.
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 MFD32X20S FAQ
The double-acting, double-rod design provides equal force both ways: 345.6 N at 0.5 MPa, 483.8 N at 0.7 MPa, and a theoretical maximum of 70.5 kgf at 1.0 MPa. It uses a 1/4 inch air port.
No, the piston will drift on air loss. The fixed TPU bumper pads only decelerate the stroke end and do not act as a lock. You must use an external rod lock or pilot check valve to hold a suspended load.
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