Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300U
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300U is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 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 MF40X300U
Delivering 628.3 N of push force at 0.5 MPa, this double-acting 40 mm bore mini cylinder handles demanding 300 mm stroke tasks. The JIS-standard round body is physically shorter than a comparable ISO 6432 unit, yielding a compact footprint that simplifies tight machine layouts. Its SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments.
The piston relies on a two-way oil-retaining seal to maintain lubrication for long service life, while fixed TPU bumper pads and a front-cover anti-impact pad absorb stroke-end shocks. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches. Plan for roughly 377 N of actual work at 0.5 MPa, which translates to lifting about 32 kg vertically with a 2:1 safety margin.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300U Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300U |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 MF40X300U
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 MF40X300U Is Used
Pallet Diverting Gate
Uses the 628.3 N push force at 0.5 MPa to reliably swing heavy pallet diverting gates on high-throughput packaging lines.
Carton Pusher Assembly
Employs the 300 mm stroke to push corrugated cartons from an accumulation roller bed onto a downstream sorting belt.
Vertical Parts Lowering
Lifts or lowers approximately 32 kg metal fixtures between processing stations, taking advantage of the compact JIS body length.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300U the Right Cylinder?
When sizing this 40 mm bore, verify your actual load requirements: if 628.3 N at 0.5 MPa is excessive, the smaller MF32 provides 402.2 N, but since 40 mm is the largest available MF bore, exceeding this capacity requires a different cylinder family entirely. The U flat-end back cover suits direct rear mounting, while LB foot, FA flange, SDB pivot, and TC trunnion brackets offer versatile installation. Air connects via a 1/4" port, and the male rod thread is M14x1.5.
Be aware that a standard double-acting cylinder drifts if air pressure drops or the valve is centred; the TPU bumpers only soften the end of travel and do not function as a locking brake. To sustain a vertical load securely, integrate an external rod lock or a pilot-operated check valve. Furthermore, on a lengthy 300 mm extension, minimize side-loading to prevent rod bending and 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 MF40X300U FAQ
The 40 mm bore features a 1/4" port and an M14x1.5 male rod thread. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. The unit features a SUS304 stainless barrel, fixed TPU bumpers, and a U flat-end rear cover.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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