Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110U 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 MI40X110U
Delivering serious muscle for a compact pneumatic actuator, the AirTAC MI40X110U generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. This 40 mm bore, 110 mm stroke actuator is a double-acting round-body mini cylinder built from a stainless-steel barrel and piston rod. The riveted construction shrinks the footprint while the metal itself resists mild corrosion, giving it a distinct advantage over painted alternatives in damp processing zones.
Because this specific SKU lacks the -S magnet suffix, it cannot accept CMSG, DMSG or EMSG position switches. It carries fixed TPU bumper pads to decelerate the piston at stroke end rather than an adjustable air cushion. In practical terms, you can plan for a safe working load of roughly 377 N, which means it lifts about 32 kg vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110U |
|---|---|
| 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 MI40X110U
| 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 MI40X110U Is Used
Bottling Line Diverter
Handles heavy product routing on a washdown bottling line, using its 628.3 N push force to pivot guide rails while shrugging off moisture with its stainless steel body.
Corrugated Box Flap Folder
Provides the robust actuation needed to fold heavy corrugated cardboard flaps, relying on the 110 mm stroke and fixed TPU bumpers to absorb the end-of-travel shock.
Woodworking Clamp Station
Secures timber blanks during cutting operations, where the 1/4 inch port allows high flow rates for rapid 30-800 mm/s cycling without position sensing.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X110U the Right Cylinder?
When sizing this 40 mm bore unit, the adjacent Ø32 generates 402.2 N of push at 0.5 MPa, while the Ø40 sits at the top of the MI range with no larger standard bore available. If your application demands position feedback, you must step up to an MI40X110U-S variant to host magnetic switches. The U suffix equips this actuator with a 90-degree rear cover for specific pivot or port orientations.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centred; the TPU bumpers only soften the end-of-stroke impact and will not function as a brake. To suspend a load safely mid-stroke, integrate an external pilot-operated check valve or a dedicated rod lock.
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 MI40X110U FAQ
This 40 mm bore cylinder features a 1/4 inch air port and a Ø16 mm piston rod with an M12x1.25 male thread. 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.
No, this specific SKU does not include the internal magnet required for switches. To use CMSG, DMSG or EMSG sensors, you must select the -S variant of this round-body mini cylinder. Additionally, note that Ø40 models exceed the ISO 6432 mounting dimensions.
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Covers non-human-caused product damage.
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