Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke20 mm
- Port size1/4"
- Acting typeDouble acting
- 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 MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC
Delivering 628.3 N of push force at 0.5 MPa, this double-acting 40 mm bore pneumatic mini cylinder handles heavy-duty short-stroke tasks. The JIS-standard round-body design is physically shorter than a comparable ISO 6432 unit for the same 20 mm stroke, saving valuable mounting length in tight machinery. Its SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments. Inside, a two-way oil-retaining seal holds a lubricating film for long service life. Plan for roughly 377 N of actual work at 0.5 MPa, which translates to safely lifting about 32 kg vertically with a 2:1 margin.
This specific configuration includes a built-in piston magnet for position sensing, a flat-end U back cover, and a TC trunnion mount. Stroke-end impact is softened by fixed TPU bumper pads and a front-cover anti-impact pad. Air connects via a 1/4" port, and the 16 mm rod features an M14x1.5 male thread. The bumpers decelerate the piston but do not act as an adjustable air cushion.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| 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 500 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | 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 MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC Is Used
Short-Stroke Stamping
Applies 628.3 N of push force at 0.5 MPa to seat bearings or stamp small metal tags in compact automated presses.
Heavy Diverter Gate
Swings a robust sorting flap on a packaging line using the TC trunnion mount to handle high-inertia pivoting motions.
Pallet Stopper Arm
Halts incoming pallets on a roller conveyor; the SUS304 barrel withstands dust and occasional washdown in logistics hubs.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC the Right Cylinder?
When sizing this 40 mm bore actuator, compare its 628.3 N push force at 0.5 MPa against the smaller MF32, which provides 402.2 N. Since 40 mm is the largest available bore in the MF series, moving higher requires a different cylinder family entirely. For your 20 mm stroke, the short rod keeps side-load bending stress minimal, though maintaining precise alignment remains essential.
The TC trunnion mount pairs with the flat-end U back cover to support pivoting loads. Because this SKU carries the -S suffix, you can directly mount CMSG, DMSG, or EMSG sensors for end-of-stroke detection. Remember that a standard cylinder drifts if air pressure drops or the valve is centred; the TPU bumpers only soften the end of travel and will not lock the rod. Use an external pilot check valve or rod lock to hold a suspended load safely.
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 MF32-40 Stainless Steel Mini Cylinder MF40X20SUTC FAQ
This 40 mm bore double-acting cylinder pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. It uses a 1/4" air port and a 16 mm rod with an M14x1.5 male thread.
No, the MF is a JIS-standard round-body cylinder, not an ISO 6432 unit. However, for the same 40 mm bore and 20 mm stroke, the MF body is shorter than an ISO 6432 cylinder, which saves mounting length. It features a SUS304 stainless barrel, fixed TPU bumper pads, and requires the included -S magnet to mount CMSG, DMSG, or EMSG sensors.
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Covers non-human-caused product damage.
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