Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SU is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 10mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke10 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 MI25~40 Stainless Steel Mini Cylinder MI40X10SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty actuation in compact spaces. The stainless-steel barrel and Ø16 mm piston rod shrug off mild corrosion, making it superior to painted alternatives in damp washdown environments. It features a 1/4" air port and a U-type back cover that orients the rear port at 90 degrees for tight machinery layouts.
With its extremely short 10 mm stroke, the riveted construction provides a rigid, space-saving thrust solution. The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for precise end-of-stroke detection. 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.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 10 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø40 bore is a larger, non-ISO-6432 size.
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 MI25~40 Stainless Steel Mini Cylinder MI40X10SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×10 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SU Is Used
Short-Stroke Clamping
Provides high-force 10 mm clamping action on heavy steel billets within automated machining centers.
Divert Gate Actuation
Drives robust divert gates on high-mass package conveyors where the 32 kg vertical lift capacity easily shifts heavy goods.
Carton Sealing Press
Applies brief, powerful downward pressure on industrial carton sealing heads, using the 90-degree U cover to keep airlines tidy.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SU the Right Cylinder?
As the largest bore in the MI range, the Ø40 sits at the top of the scale with no larger standard size available; if 628.3 N at 0.5 MPa is excessive, step down to the Ø32 bore which provides 402.2 N. The fixed TPU bumper pads absorb stroke-end impact but cannot hold a load vertically—if air pressure drops or the valve centres, the piston will drift, so fit an external rod lock or pilot check valve for suspended masses. The U-type 90-degree rear cover aids routing in confined cabinets, and the included magnet pairs directly with reed or electronic sensors.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/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/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SU FAQ
This 40 mm bore cylinder features a 1/4" air port and delivers 628.3 N push / 527.8 N pull at 0.5 MPa, and 879.6 N push / 738.9 N pull at 0.7 MPa. Its theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, the fixed TPU bumper pads only decelerate the stroke end and are not an adjustable air cushion. Furthermore, the piston will drift if air is lost or the valve is centred, so an external rod lock or pilot check valve is required for vertical load holding.
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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