Airtac MF32-40 Stainless Steel Mini Cylinder MF40X280SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X280SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 280mm 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
- Stroke280 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 MF40X280SU
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. For the same 40 mm bore and 280 mm stroke, the riveted SUS304 stainless steel barrel and aluminium covers create a body notably shorter than an ISO 6432 cylinder, saving valuable mounting length on your equipment.
The built-in piston magnet (-S) supports CMSG, DMSG and EMSG sensors for position confirmation, while the flat-end U back cover suits flush mounting against hard stops. Plan for roughly 377 N of actual work at 0.5 MPa, which translates to lifting about 32 kg vertically with a 2:1 safety margin. Fixed TPU bumper pads and a front-cover anti-impact pad soften the stroke end, and the two-way oil-retaining seal ensures long service life.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X280SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X280SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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 MF40X280SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×280 | 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 MF40X280SU Is Used
Pallet Diverter Gate
Shifts heavy timber or steel pallets onto secondary packaging lines using the full 628.3 N push force, with the flat-end U back cover mounting flush to the conveyor frame.
Press Pin Insertion
Drives dowel pins into dense assemblies at 0.5 MPa, relying on the fixed TPU bumper pads to absorb the repetitive impact without damaging the front cover.
Vertical Parts Lift
Elevates 32 kg material totes between conveyor tiers, using the -S magnet and DMSG sensors to confirm upper and lower positions for the PLC.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X280SU the Right Cylinder?
When sizing this 40 mm bore unit, verify your actual load requirements against the 628.3 N push force at 0.5 MPa. If your application demands less force, stepping down to the MF32 provides 402.2 N at 0.5 MPa; since 40 mm is the largest available MF bore, any higher thrust requirement will require a different cylinder family entirely. The 1/4" port and M14x1.5 male rod thread are fixed for this bore size.
This SKU includes the -S magnet for electronic or reed switches, but remember that a standard cylinder drifts when air is removed or the valve is centred—the bumpers only decelerate the stroke end and cannot act as a brake. To suspend a vertical load safely during an air loss event, integrate an external pilot-operated check valve or a dedicated rod lock. At 280 mm, also ensure your mounting arrangement—whether LB foot, FA flange or TC trunnion—prevents rod side-loading and bending.
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 MF40X280SU FAQ
This 40 mm bore double-acting cylinder 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 of 128.1 kgf at 1.0 MPa.
Built to JIS standards with a riveted SUS304 stainless barrel, the body is physically shorter than an ISO 6432 cylinder of the same bore and stroke, saving mounting space. It uses fixed TPU bumper pads to decelerate the stroke end rather than an adjustable air cushion, and the -S suffix means it is ready for CMSG, DMSG or EMSG sensors.
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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