Airtac MF32-40 Stainless Steel Mini Cylinder MF40X30SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X30SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 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 MF40X30SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty tasks in tight spaces. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown. Because the MF body is shorter than an ISO 6432 cylinder for the same bore and stroke, it saves valuable mounting length.
The 40 mm bore generates substantial thrust while fixed TPU bumper pads and a front-cover anti-impact pad soften the stroke-end impact. The piston's two-way seal retains an oil film for long life. Plan for roughly 377 N of real work at 0.5 MPa, which means it can safely lift about 32 kg vertically with a 2:1 margin. The 1/4" port and M14x1.5 male rod thread match the bore, and the built-in magnet (-S) supports CMSG, DMSG, and EMSG switches.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X30SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X30SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 MF40X30SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 MF40X30SU Is Used
Clamp Actuation
Secures heavy cast metal parts inside CNC machining centres, using its 628.3 N push force to hold stock firmly against the fixture bed.
Press Fit Pins
Drives dowel pins into thick aluminium housings on an automated assembly line, where the short 30 mm stroke provides rapid cycling.
Divert Gate
Pushes loaded pallets onto a secondary conveyor belt, easily handling the 32 kg vertical-lift equivalent to route heavy goods.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X30SU the Right Cylinder?
If 402.2 N from the smaller MF32 is insufficient for your fixture, this 40 mm bore provides the necessary step up in thrust. Since 40 mm is the largest available MF bore, exceeding this capacity requires a different cylinder family. For this 30 mm stroke, side-load and rod-bending risks are minimal, but always align the load precisely. The U flat-end back cover suits direct rear mounting.
Air pressure extends and retracts the rod, but a plain cylinder drifts if air is lost or the valve is centred. The TPU pads only decelerate near the stroke end; they do not act as a brake. To hold a load securely, install an external rod lock or a pilot-operated 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 MF32-40 Stainless Steel Mini Cylinder MF40X30SU FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. This 40 mm bore cylinder uses a 1/4" air port and an M14x1.5 male rod thread.
No, it does not conform to ISO 6432. It is a JIS-standard round-body cylinder that is physically shorter than an ISO 6432 cylinder for the same 40 mm bore and 30 mm stroke, saving mounting length. It features a SUS304 stainless barrel and fixed TPU bumper pads rather than an adjustable air cushion.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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