Airtac MI25~40 Stainless Steel Mini Cylinder MI40X180SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X180SCM is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 180mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke180 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 MI40X180SCM
Delivering a robust 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty actuation where smaller bores stall. The stainless-steel barrel and Ø16 mm rod shrug off mild corrosion and washdown environments, outlasting painted alternatives in damp facilities. A 1/4 inch port supplies the air, while the 180 mm stroke falls well within the 500 mm standard limit for this bore.
Because the 628.3 N rating is theoretical, plan for a safe working load of about 377 N of real work at 0.5 MPa. For vertical lifting, that translates to hoisting roughly 32 kg with a 2:1 safety margin. The riveted construction keeps the body compact, and fixed TPU bumper pads absorb the impact at stroke end. The built-in magnet supports CMSG, DMSG and EMSG sensors, while the CM round rear cover provides a clean, axial mounting footprint.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X180SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X180SCM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 180 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 MI40X180SCM
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×180 | 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 MI40X180SCM Is Used
Stamping Press Feed
Pushes heavy blanks into a mechanical press, using the 628.3 N thrust to overcome spring-loaded detents on the feed line.
Pallet Component Lift
Raises 30 kg machinery sub-assemblies vertically between conveyor tiers, safely operating within the 32 kg calculated lift margin.
Heavy Carton Lid Flap
Folds thick cardboard flaps on industrial cartoners, where the stainless build resists humid packing-room environments.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X180SCM the Right Cylinder?
As the largest bore in the MI family, this 40 mm model is the top choice when you need maximum thrust, offering 628.3 N push at 0.5 MPa compared to 402.2 N from the next size down at Ø32. If your application demands even more force, you will need to step outside the MI series entirely, as this is the upper limit. The 180 mm stroke provides ample travel, though at this length you should ensure rigid guidance to prevent rod bending under side loads.
Remember that venting or centering the valve causes the piston to drift, as the fixed TPU bumpers only decelerate the stroke end rather than locking the rod. To suspend a load safely mid-stroke, integrate an external rod lock or a pilot-operated check valve. The CM round end back cover and standard 1/4 inch porting simplify plumbing, and the integrated magnet allows direct mounting of position switches.
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 MI40X180SCM FAQ
At 0.5 MPa it provides 628.3 N push and 527.8 N pull. At 0.7 MPa it provides 879.6 N push and 738.9 N pull. The theoretical maximum force is 128.1 kgf at 1.0 MPa. Air is supplied via a 1/4 inch port, and the piston rod features an M12x1.25 male thread.
No, a plain double-acting cylinder drifts when air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the piston near the stroke end and do not act as a brake. You must add an external rod lock or pilot check valve to hold a suspended load.
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.
Request a Quote for Airtac MI25~40 Stainless Steel Mini Cylinder MI40X180SCM
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.