Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250CM
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250CM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 250mm 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
- Stroke250 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 MF40X250CM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty automation tasks. The SUS304 stainless steel 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. Because the MF body is shorter than an ISO 6432 cylinder for the same 40 mm bore and 250 mm stroke, it saves valuable mounting length in tight machinery.
Featuring a CM round-end rear cover and a 1/4 inch port, the unit relies on fixed TPU bumper pads plus a front-cover anti-impact pad to decelerate the stroke end. Plan for about 377 N of actual work at 0.5 MPa, which means it lifts roughly 32 kg vertically with a 2:1 safety margin. Note this specific SKU lacks a magnet, so it cannot accept CMSG, DMSG or EMSG position switches without upgrading to an -S variant.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250CM Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250CM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 250 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 MF40X250CM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 MF40X250CM Is Used
Carton Diverting Arm
Pushes heavy cardboard cartons across a packaging line using 628.3 N of thrust at 0.5 MPa, absorbing the impact at the 250 mm stroke end with fixed TPU pads.
Pneumatic Press Platen
Lowers a small stamping platen to crimp metal lugs, safely lifting around 32 kg of tooling weight vertically with a 2:1 safety margin.
Pallet Component Indexer
Uses the CM round-end cover to pivot and index heavy wooden pallets into a wrapping station, fitting into a compact machinery footprint.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250CM the Right Cylinder?
When sizing this 40 mm bore, compare it directly against the smaller MF32, which provides 402.2 N of push at 0.5 MPa. If your fixture requires less force, the 32 mm option saves space, but if you need maximum thrust within the series, this 40 mm bore is the largest available. Keep in mind that a plain MF cylinder drifts when air is lost or the valve is centred; the bumper pads only soften the end of stroke and do not act as a brake. To hold a load securely mid-stroke, integrate an external rod lock or a pilot-operated check valve.
With a 250 mm stroke, avoid excessive side loads that could bend the 16 mm rod. You can mount this unit using LB foot, FA flange, SDB pivot, or TC trunnion brackets. For high-speed cycles that generate severe impact, consider the MFC variant, which offers adjustable air cushioning instead of the standard fixed bumpers.
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 MF40X250CM FAQ
This 40 mm bore cylinder features a 1/4 inch 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 does not include a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You must select an MF40 model with the -S suffix for sensor compatibility. The JIS-standard round body is also shorter than an ISO 6432 cylinder, which helps save mounting length.
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Covers non-human-caused product damage.
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