Airtac MF32-40 Stainless Steel Mini Cylinder MF40X125CM
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X125CM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 125mm 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
- Stroke125 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 MF40X125CM
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 with ease. The SUS304 stainless-steel barrel and riveted aluminium covers resist mild corrosion and washdown environments, while the piston's two-way seal retains an oil film for long operational life. Because the MF body is shorter than an ISO 6432 cylinder for the same 40 mm bore and 125 mm stroke, it saves valuable mounting length in tight machinery.
The cylinder features fixed TPU bumper pads and a front-cover anti-impact pad that soften stroke-end impact without offering adjustable cushioning. For practical sizing, plan for a safe working load of about 377 N (roughly 60 percent of the 0.5 MPa rating), which translates to lifting a 32 kg part vertically with a 2:1 safety margin. This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG position switches; it uses a 1/4 inch port and a CM round-end rear cover.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X125CM Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X125CM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 MF40X125CM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 MF40X125CM Is Used
Stamping Press Ejection
Uses the full 628.3 N push at 0.5 MPa to knock stamped metal blanks out of a progressive die, where the short JIS body prevents interference with the press crown.
Pallet Case Pusher
Sweeps heavy cartons onto a pallet conveyor, safely moving loads under the 377 N safe working threshold while the CM round-end rear cover accommodates a clevis pin.
Vertical Flap Folder
Folds heavy corrugated flaps on a case erector, lifting components under the 32 kg vertical limit and relying on the fixed TPU pads to absorb the end-of-stroke impact.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X125CM the Right Cylinder?
When sizing this 40 mm bore actuator, compare it directly with its neighbours: the MF32 provides 402.2 N of push at 0.5 MPa, while the MF40 listed here outputs 628.3 N, making it the largest and most powerful option in the MF family. If your fixture demands position holding on air loss or valve centring, remember that a plain cylinder drifts under load—the TPU pads only decelerate the stroke end and act as neither a brake nor a lock. You must add an external rod lock or a pilot-operated check valve to secure the load. Furthermore, because this 125 mm stroke model has no -S magnet, it cannot support magnetic sensing; switch to an -S variant if your control system requires CMSG, DMSG, or EMSG switches. You can mount it using LB foot, FA flange, SDB pivot, or 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 MF40X125CM FAQ
This 40 mm bore cylinder uses a 1/4 inch port and a male M14x1.5 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 the pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No. The base MF uses fixed TPU bumper pads that merely decelerate the stroke end; it does not have the adjustable air cushion found on the MFC variant. Additionally, this specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. The SUS304 stainless build is shorter than an ISO 6432 cylinder, saving mounting length.
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