Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80U
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80U is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 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 MF40X80U
Generating 628.3 N of push force at 0.5 MPa, this double-acting 40 mm bore mini cylinder is built around a SUS304 stainless barrel with riveted aluminium covers that resist mild washdown. The U-suffix denotes a flat-end rear cover, and because it follows JIS round-body geometry, the overall length is physically shorter than an ISO 6432 cylinder of the identical bore and stroke.
The internal piston relies on a heterogeneous two-way seal that retains an oil film for long service life, while fixed TPU bumper pads and a front-cover anti-impact pad absorb stroke-end shock. For practical actuation, plan your fixture around a 377 N working load (about 60 percent of the 0.5 MPa rating), which safely lifts roughly 32 kg vertically. It features a 1/4 inch port, a 16 mm rod, and operates at 30-800 mm/s.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80U Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80U |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 MF40X80U
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 MF40X80U Is Used
Carton Diverting Gate
Actuates a heavy routing flap on a packaging line, using the 628.3 N thrust to push fully loaded corrugated boxes smoothly onto a secondary belt.
Press Fit Bushings
Drives small bronze bearings into aluminum housings on an assembly fixture, relying on the flat-end U rear cover for flush mounting against the machine frame.
Pallet Stopper Arm
Raises and lowers a solid stop block to halt incoming pallets at a wrapping station, where the SUS304 barrel withstands occasional dust and moisture.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80U the Right Cylinder?
When sizing this 80 mm stroke unit, step down to the MF32 if your task only needs 402.2 N at 0.5 MPa, as the 40 mm bore is the largest in the MF family and provides maximum push. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches; choose an -S variant if you require electronic sensing.
Remember that the fixed TPU bumpers only decelerate the piston near the end of travel and do not function as a brake. If your application must prevent a dropped load during air loss or valve centering, add an external rod lock or a pilot-operated check valve. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion brackets.
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 MF40X80U FAQ
The 40 mm bore uses a 1/4 inch port and a 16 mm rod. 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.
No, the MF is a JIS-standard round-body cylinder that is physically shorter than an ISO 6432 unit for the same stroke, so it saves mounting length but does not conform to ISO 6432. Additionally, this specific model lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG switches without upgrading to an -S version.
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.
Request a Quote for Airtac MF32-40 Stainless Steel Mini Cylinder MF40X80U
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.