Airtac MF32-40 Stainless Steel Mini Cylinder MF40X170SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X170SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 170mm 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
- Stroke170 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 MF40X170SU
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MF40X170SU is a robust 40 mm bore double-acting mini cylinder built to JIS standards. Because its SUS304 stainless steel round body is shorter than a comparable ISO 6432 unit for the same 170 mm stroke, it saves valuable mounting length in tight machinery. The aluminium covers are joined to the barrel using a riveted rolling-packed structure, avoiding tie-rods entirely.
This model includes a built-in piston magnet for position sensing and a U-style flat-end rear cover. The piston relies on a heterogeneous two-way seal that retains an oil film for long-term lubrication, while fixed TPU bumper pads and a front-cover anti-impact pad soften the stroke-end impact. For practical sizing, plan for about 377 N of real work at 0.5 MPa, which means it can safely lift a 32 kg vertical load with a 2:1 safety margin. Air connects via a 1/4 inch port.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X170SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X170SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 170 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 MF40X170SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×170 | 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 MF40X170SU Is Used
Package Diverting
Pushes heavy cartons off a main packaging line using 628.3 N of thrust, with the U flat-end cover mounted flush to the conveyor frame.
Pallet Gauging
Acts as a stopper block for incoming pallets, relying on the fixed TPU bumper pads to absorb the impact of loads arriving at speed.
Press Tool Ejection
Ejects formed metal parts from a die, using the built-in magnet and DMSG sensor to confirm full retraction before the press cycles.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X170SU the Right Cylinder?
When sizing this 40 mm bore unit, consider the neighbouring MF32 which provides 402.2 N of push at 0.5 MPa if your payload is lighter; since 40 mm is the largest available MF bore, moving beyond this requires a different cylinder family entirely. The MF40X170SU features a -S magnet for CMSG, DMSG, or EMSG switches, and its U flat-end back cover suits direct rear mounting. The male M14x1.5 rod thread handles the 16 mm piston rod.
Remember that fixed TPU pads only decelerate the stroke end and do not act as a brake. If your application drops air pressure or centres the valve, the piston will drift and drop the load. To prevent vertical movement, you must integrate an external rod lock or a pilot-operated check valve. Additionally, ensure your side loads are managed to avoid rod bending over the 170 mm stroke.
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 MF40X170SU FAQ
This 40 mm bore double-acting cylinder uses a 1/4 inch air port. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The JIS-standard round-body design is physically shorter than an ISO 6432 cylinder for the same 40 mm bore and 170 mm stroke, saving mounting space. It uses fixed TPU bumper pads and a front anti-impact pad to decelerate the piston at the stroke end; these are not adjustable air cushions.
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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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