Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200SUTC
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200SUTC is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 200mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke200 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 MI40X200SUTC
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty automation tasks with ease. The Ø40 mm bore operates on a 1/4" port and features a Ø16 mm stainless-steel piston rod with an M12x1.25 male thread. Because the 200 mm stroke falls within the 500 mm maximum standard stroke limit, it ships as a standard made-to-order configuration. The U back cover provides a 90-degree port orientation, while the included TC trunnion mount supports pivoting articulation.
The stainless-steel barrel and rod resist mild corrosion and washdown, offering a distinct advantage over painted alternatives in damp environments. Fixed TPU bumper pads absorb stroke-end impact to protect the mechanism. For practical sizing, plan for a safe working load of about 377 N, which means this actuator can comfortably lift roughly 32 kg vertically with a 2:1 safety margin. The built-in -S magnet supports CMSG, DMSG and EMSG switches for precise position sensing.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200SUTC Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200SUTC |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 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 MI40X200SUTC
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 MI40X200SUTC Is Used
Heavy-Duty Part Ejection
Uses the full 628.3 N push force at 0.5 MPa to eject dense metal castings from a CNC machining center, leveraging the 200 mm stroke for full extraction.
Palletized Goods Diversion
Employs the TC trunnion mount and U back cover to articulate smoothly and push heavy 32 kg cartons across a 90-degree conveyor transfer lane.
Vertical Flap Folding
Relies on the built-in -S magnet and DMSG switches to verify position while folding thick corrugated packaging flaps under continuous washdown conditions.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200SUTC the Right Cylinder?
When sizing this 40 mm bore actuator, compare it against the adjacent Ø32 bore, which yields 402.2 N of push force at 0.5 MPa. If your application requires less power, dropping down to the 32 mm option saves space, but the 40 mm bore is the largest available in this series, so higher force demands require a different cylinder family entirely. The TC trunnion mount pairs ideally with the U 90-degree back cover for articulated pivoting loads.
Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, as the fixed TPU bumpers only decelerate the stroke end rather than locking the rod. To suspend a load safely during an outage, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit. For the 200 mm stroke length, ensure your mounting geometry minimizes side loading to prevent premature rod bending and seal wear.
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 MI40X200SUTC FAQ
This double-acting cylinder 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. It uses a 1/4" air port and a Ø16 mm rod with an M12x1.25 male thread.
No, the fixed TPU bumper pads only decelerate the piston near the stroke end and do not function as a brake. If air is lost or the valve is centered, the rod will drift. To maintain vertical position, you must install an external rod lock or a pilot-operated check valve.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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