Airtac MF32-40 Stainless Steel Mini Cylinder MF40X165SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X165SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 165mm 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
- Stroke165 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 MF40X165SU
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MF40X165SU is a JIS-standard round-body mini cylinder engineered for tight machinery layouts. For the same 40 mm bore and 165 mm stroke, this riveted SUS304 stainless steel body is physically shorter than an ISO 6432 cylinder, giving you a tangible packaging advantage in crowded assemblies. The 1/4" port drives a 16 mm rod, and because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG or EMSG position switches.
The barrel and aluminium covers are joined by a rolling-packed structure that resists mild corrosion and washdown. Inside, a heterogeneous two-way seal retains an oil film for long service life, while fixed TPU bumper pads and a front-cover anti-impact pad soften the stroke-end impact. Planning around the 628.3 N rating, you can expect about 377 N of safe working load at 0.5 MPa; vertically, this translates to lifting roughly 32 kg with a 2:1 safety margin, letting you match real part weights accurately.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X165SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X165SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 165 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 MF40X165SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×165 | 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 MF40X165SU Is Used
Pallet Diversion
Uses the 628.3 N push at 0.5 MPa to positively divert heavy loaded pallets onto secondary packaging lines without stalling.
Press Insertion
Presses bronze bushings into cast housings on an automated assembly line, relying on the compact JIS body to fit between spindle stations.
Carton Lid Flap
Folds heavy corrugated carton lids during case erecting, where the 32 kg vertical lift equivalence easily overcomes cardboard resistance.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X165SU the Right Cylinder?
When sizing this 40 mm bore, compare its 628.3 N push at 0.5 MPa against the smaller MF32, which outputs 402.2 N under the same pressure. Since 40 mm is the largest available MF bore, moving up in force requires switching to a different cylinder family. The U flat-end back cover suits direct rear mounting, while the -S magnet enables electronic or reed sensors.
Remember that a standard double-acting cylinder drifts if air pressure drops or the valve centres, as the TPU bumpers only decelerate the end of travel without acting as a brake. To suspend a load safely, install an external rod lock or a pilot-operated check valve. Furthermore, at 165 mm, be mindful of rod-bending side loads and guide the tooling to prevent premature seal wear.
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 MF40X165SU FAQ
This 40 mm bore cylinder features a 1/4" air port and a 16 mm rod. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, or 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
Yes, the -S suffix denotes a built-in piston magnet compatible with CMSG, DMSG and EMSG switches. The U back cover is a flat-end style for direct mounting, and the riveted SUS304 stainless body is shorter than an ISO 6432 cylinder, saving valuable machine space.
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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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