Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SCM
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 20mm 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
- Stroke20 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 MF40X20SCM
Delivering 628.3 N of push force at 0.5 MPa, this 40 mm bore double-acting actuator handles heavy-duty positioning in tight spaces. The JIS-standard round-body design is physically shorter than an ISO 6432 cylinder of the same bore and stroke, saving valuable mounting length on your equipment. Its SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown environments.
The 1/4 inch port drives a 16 mm piston rod, and because this MF40X20SCM variant includes a magnet, it supports CMSG, DMSG, and EMSG position switches. Fixed TPU bumper pads and a front-cover anti-impact pad absorb stroke-end shock. Plan for roughly 377 N of actual work at 0.5 MPa, which means it can safely lift about 32 kg vertically with a 2:1 safety margin.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SCM Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 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 MF40X20SCM
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 MF40X20SCM Is Used
Press Fit Subassemblies
Drives small bushings or pins into housings using the 628.3 N push force, where the short 20 mm stroke provides a firm, rapid seating action.
Heavy Diverter Gate
Pivots a heavy metal deflector plate on a packaging line, using the CM round-end back cover for smooth rear articulation under load.
Pallet Stopper Arm
Extends a solid stop block to halt loaded pallets, relying on the built-in magnet and EMSG sensor to confirm the blocking position.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X20SCM the Right Cylinder?
When sizing this 40 mm bore unit, step down to the MF32 if your task only requires 402.2 N of push at 0.5 MPa, as the smaller bore saves air volume. Since 40 mm is the largest available MF diameter, exceeding 628.3 N at 0.5 MPa requires ganging two cylinders or moving to a larger series. The CM round-end back cover suits rear pivot mounting, and you can pair it with LB foot, FA flange, or TC trunnion brackets.
Remember that a standard double-acting cylinder drifts when air pressure drops or the valve centres; the fixed bumpers only soften the end-of-stroke impact and will not brake or hold a suspended load. For vertical positioning, add an external rod lock or a pilot-operated check valve. The short 20 mm stroke keeps rod bending minimal, but always guide the load to prevent side-loading the seals.
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 MF40X20SCM FAQ
This 40 mm bore cylinder features a 1/4 inch air port and a 16 mm rod with an M14x1.5 male 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.
The MF body is JIS-standard and is intentionally shorter than an ISO 6432 cylinder to save space, so it does not conform to ISO 6432 dimensions. However, the included -S magnet allows direct mounting of CMSG, DMSG, or EMSG switches, and it supports LB, FA, SDB, and TC brackets.
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.
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