Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CM
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 400mm 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
- Stroke400 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 MF40X400CM
Delivering 628.3 N of push force at 0.5 MPa, this 40 mm bore double-acting actuator handles heavy-duty positioning tasks. The JIS-standard round-body architecture is physically shorter than a comparable ISO 6432 cylinder for the same 400 mm stroke, delivering a tangible packaging advantage in tight machinery. A SUS304 stainless steel barrel mates to aluminium covers via a riveted rolling-packed structure, resisting mild corrosion and washdown environments.
The piston relies on a heterogeneous two-way seal that retains an oil film for prolonged lifespan, while fixed TPU bumper pads and a front-cover anti-impact pad soften end-of-stroke impacts. Because this specific SKU lacks the -S suffix, it cannot accept CMSG, DMSG, or EMSG magnetic switches. Plan for roughly 377 N of actual work at 0.5 MPa, which means it lifts about 32 kg vertically with a 2:1 safety margin.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CM Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 MF40X400CM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 MF40X400CM Is Used
Pallet Diverting Gate
Pushes heavy timber pallets sideways onto a secondary packaging line using the full 628.3 N thrust at 0.5 MPa.
Stamping Press Feed
Advances metal blanks into a mechanical press, leveraging the compact JIS body length to fit within a crowded tooling bay.
Roller Lane Sorting
Actuates a diverting arm across gravity roller conveyors, where the SUS304 barrel withstands ambient warehouse humidity.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400CM the Right Cylinder?
When sizing this 40 mm bore unit, consider the neighbouring MF32 which provides 402.2 N of push force at 0.5 MPa for lighter duties; since 40 mm is the largest available MF bore, exceeding the 128.1 kgf theoretical maximum requires migrating to a different cylinder family entirely. The CM round-end back cover suits rear pivot mounting, and you can pair the body with LB foot, FA flange, SDB pivot, or TC trunnion brackets. Air connections use a 1/4" port with an M14x1.5 male rod thread.
Because the standard MF uses fixed bumper pads rather than an adjustable air cushion, cycle speeds must be managed within the 30-800 mm/s range to prevent rod-bending on this long 400 mm stroke. Furthermore, a plain cylinder drifts when air is lost or the valve is centred—the bumpers only decelerate the stroke end and do not act as a brake. To suspend a load safely, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 MF40X400CM FAQ
This 40 mm bore cylinder uses a 1/4" air 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, this specific SKU lacks the internal magnet so it cannot accept CMSG, DMSG, or EMSG switches; you must specify an MF40X400CMS variant for position sensing. The unit features a CM round-end back cover and is a JIS-standard round-body cylinder, which is physically shorter than an ISO 6432 model for the same stroke.
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