Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160R
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160R is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 160mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke160 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 MI40X160R
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty automation with ease. The stainless-steel barrel and Ø16 mm piston rod shrug off mild corrosion, making it superior to painted alternatives in damp or washdown environments. It uses a 1/4" port and features an R back cover with an axial-in port orientation to simplify tight plumbing layouts.
Fixed TPU bumper pads absorb the impact at stroke extremes, decelerating the piston smoothly without the adjustment complexity of an air cushion. For practical sizing, plan for a safe working load of about 377 N (roughly 60% of the 0.5 MPa rating), which translates to lifting a 32 kg part vertically with a 2:1 safety margin. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160R Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160R |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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 MI40X160R
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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 MI40X160R Is Used
Stamping Press Feed
Pushes heavy metal blanks into a forming press, utilizing the 628.3 N force to move dense steel parts reliably without stalling.
Pallet Divertor
Acts as a heavy-duty routing gate on a packaging line, deflecting loaded pallets using the rear axial R port to keep hoses clear of the belt.
Vertical Parts Lift
Raises 30 kg hardware totes vertically between conveyor tiers, operating safely within the 32 kg calculated lift margin at 0.5 MPa.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160R the Right Cylinder?
When sizing this 40 mm bore actuator, compare it against its neighbours: a 32 mm bore yields 402.2 N of push at 0.5 MPa, while the 40 mm bore provides 628.3 N. As the largest standard round-body option, there is no larger MI bore to step up to if you need more power. If your application requires variable air cushioning for high-speed cycles, consider the MIC variant instead of relying on the fixed TPU bumpers here.
The 160 mm stroke operates well within the 500 mm maximum limit, though you should still design your mounting to minimize side-load and rod-bending forces. This model features the R back cover for axial porting. Remember that a standard double-acting cylinder drifts when air is lost or the valve is centred; the bumpers only soften the end of stroke and will not lock the load. Install an external rod lock or pilot-operated check valve if you need to hold position securely.
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 MI40X160R FAQ
This 40 mm bore cylinder features a 1/4" port and a M12x1.25 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum force of 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet. You must select the -S variant (MI40X160S) to use CMSG, DMSG, or EMSG switches. Additionally, this is a non-ISO-6432 round-body mini cylinder, so ensure your mounting brackets match the 40 mm dimensions rather than standard mini-cylinder footprints.
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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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