Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250SCM
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250SCM 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 MF40X250SCM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles heavy-duty actuation within a compact footprint. Because the SUS304 stainless-steel barrel and riveted aluminium covers yield a shorter overall body than an ISO 6432 cylinder of the same bore and stroke, it saves valuable mounting length in tight machinery. The built-in piston magnet (-S) directly supports CMSG, DMSG, and EMSG reed or electronic switches for precise end-of-stroke detection.
Construction features include fixed TPU bumper pads and a front-cover anti-impact pad that absorb stroke-end shock, while the two-way oil-retaining piston seal ensures long-term lubrication. Operating at 30-800 mm/s on a 1/4" port with an M14x1.5 male rod thread, it provides robust performance. Plan for roughly 377 N of actual work at 0.5 MPa, which translates to safely lifting about 32 kg vertically with a 2:1 margin.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250SCM Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250SCM |
|---|---|
| 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 MF40X250SCM
| 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 MF40X250SCM Is Used
Stamping Press Ejection
Uses the 628.3 N push force at 0.5 MPa to reliably knock heavy stamped metal parts out of a die, leveraging the 250 mm stroke to clear the lower tooling completely.
Pallet Diverting Arm
Swings a heavy barrier arm to reroute loaded pallets on a packaging line, where the shorter JIS body length prevents the cylinder from intruding into adjacent walkways.
Vertical Carton Flap Folding
Drives a mechanical arm to fold heavy cardboard flaps on large shipping cartons, safely lifting components weighing up to 32 kg against gravity during the cycle.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X250SCM the Right Cylinder?
When sizing this 40 mm bore, stepping down to the MF32 yields 402.2 N of push force at 0.5 MPa, whereas the MF40 is the largest available in the series, offering a maximum theoretical output of 128.1 kgf at 1.0 MPa. The CM round-end back cover provides a specific pivot interface for this unit, and you can utilize LB foot, FA flange, or TC trunnion mounts to suit your frame. Because the -S magnet is present, position sensing is fully supported.
Remember that a standard double-acting cylinder drifts if air pressure drops or the valve is centred; the TPU bumpers only soften the end-of-stroke impact and do not act as a brake. To suspend a load safely mid-stroke, integrate an external rod lock or a pilot-operated check valve. Additionally, for a 250 mm stroke, ensure your mounting arrangement minimizes side-loading to prevent premature rod-bending and 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 MF40X250SCM FAQ
The 40 mm bore features 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 force of 128.1 kgf at 1.0 MPa.
No, the piston will drift if air is lost or the valve is centred; an external rod lock or pilot check valve is required for holding. It uses fixed TPU bumper pads to decelerate at the stroke end, not an adjustable air cushion. The -S magnet allows CMSG/DMSG/EMSG sensors to track position.
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.
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Most inquiries answered within 7-8 hours.
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