Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110SU is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 110mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke110 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 MI40X110SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty automation tasks. The stainless-steel barrel and piston rod shrug off mild corrosion, making it superior to painted alternatives in damp or washdown environments. It features a 1/4" port and a 110 mm stroke.
Riveted construction keeps the body compact, while fixed TPU bumper pads absorb impact at the stroke ends. Because the -S suffix includes a piston magnet, you can mount CMSG, DMSG or EMSG sensors for position detection. Plan for roughly 377 N of actual work at 0.5 MPa, which means it lifts about 32 kg vertically with a safe 2:1 margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 110 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 MI40X110SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×110 | 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 MI40X110SU Is Used
Heavy Carton Diverting
Pushes heavy corrugated cartons across a packaging line using the full 628.3 N thrust available at 0.5 MPa.
Pneumatic Pressing
Provides steady downward clamping pressure for assembling bearings into housings within a 110 mm stroke.
Pallet Component Loading
Cycles heavy metal fixtures onto an outbound pallet, relying on the stainless rod to endure industrial humidity.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110SU the Right Cylinder?
This 40 mm bore sits at the top of the MI range, so there is no larger standard size; if your task requires less force, step down to the 32 mm bore which provides 402.2 N push at 0.5 MPa. The U back cover provides a 90-degree port orientation for tight machinery layouts. Remember that a standard cylinder drifts when air is lost or a valve centres, so add an external rod lock or pilot check valve if you must suspend a load safely.
For this 110 mm stroke, ensure your mounting arrangement—whether LB foot, FA flange or TC trunnion—prevents side loading to avoid bending the 16 mm rod. The fixed bumpers decelerate the end of travel but cannot replace an adjustable cushion; consider the MIC variant if you need variable air damping for high-speed cycles.
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 MI40X110SU FAQ
At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. This 40 mm bore model uses a 1/4" air port.
The -S magnet allows CMSG, DMSG and EMSG switches to detect the piston. The cylinder does not hold position if air drops; the piston drifts and the fixed TPU bumpers only soften the stroke end. Use a pilot check valve to suspend loads.
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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