Airtac MF32-40 Stainless Steel Mini Cylinder MF40X25U
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X25U is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 25mm 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
- Stroke25 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 MF40X25U
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty clamping in compact spaces. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown, while the piston's two-way seal retains an oil film for long service life. For the same 40 mm bore and 25 mm stroke, the MF body is shorter than an ISO 6432 cylinder, providing a real packaging win in tight machinery.
Because it lacks the -S suffix, this specific SKU cannot accept CMSG, DMSG, or EMSG magnetic switches. It features a flat-end U back cover and a 1/4" port. Plan for roughly 377 N of actual work at 0.5 MPa to ensure reliable operation, which means it can safely lift a 32 kg part vertically with a 2:1 safety margin.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X25U Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X25U |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 MF40X25U
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 MF40X25U Is Used
Heavy-Duty Stamping Clamp
Secures thick steel plates in a mechanical press fixture, using its 628.3 N push force to prevent workpiece shifting during high-tonnage stamping operations.
Pallet Routing Diverter
Extends 25 mm to push heavy timber pallets onto a secondary routing lane within a high-throughput packaging line, fitting neatly between narrow roller gaps.
Automated Guided Vehicle Brake
Actuates a secondary mechanical stopping arm on an AGV, relying on the flat U rear cover for flush mounting against the vehicle chassis frame.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X25U the Right Cylinder?
If 402.2 N from the 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, moving beyond 879.6 N at 0.7 MPa requires a different cylinder family. The fixed TPU bumper pads soften stroke-end impact but do not function as an adjustable air cushion; for high-speed cycling, consider the MFC variant.
This plain MF40X25U lacks a magnet, so position sensing is unavailable unless you upgrade to an -S model. Note that a standard cylinder drifts if air pressure drops or the valve is centred—the bumpers only decelerate the stroke end and will not hold a suspended load. Install an external rod lock or pilot check valve if you need to maintain vertical positioning.
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 MF40X25U FAQ
This 40 mm bore cylinder features a 1/4" port and an M14x1.5 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
No, because this SKU lacks the -S suffix, it has no internal magnet and cannot accept CMSG, DMSG, or EMSG switches. The JIS-standard round-body design is shorter than an ISO 6432 cylinder, and the fixed TPU bumper pads absorb impact without offering adjustable cushioning.
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Covers non-human-caused product damage.
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