Airtac MI25~40 Stainless Steel Mini Cylinder MI40X60U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X60U is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 60mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke60 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 MI40X60U
Delivering 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 piston rod shrug off mild corrosion and washdown, outperforming painted alternatives in damp environments. A 60 mm stroke operates at 30-800 mm/s, with fixed TPU pads absorbing end-of-travel impacts.
Because this 40 mm bore exceeds the ISO 6432 standard, it functions purely as a robust round-body unit rather than a standardised mini interface. Plan for roughly 377 N of actual work at 0.5 MPa to maintain a safe margin, which translates to lifting about 32 kg vertically against gravity. The U-type back cover provides a 90-degree port orientation for tight machinery layouts.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X60U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X60U |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 60 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 MI40X60U
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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 MI40X60U Is Used
Stamping Press Ejection
Uses the 628.3 N push force to knock heavy stamped metal parts out of a die, where the stainless build resists cutting fluid splash.
Packaging Press
Leverages the 60 mm stroke and U-type 90-degree rear cover to fold and seal thick corrugated carton flaps in confined spaces.
Heavy Pallet Diverter
Pushes loaded pallets onto a secondary conveyor line, safely handling the 32 kg vertical-lift equivalent without stalling.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X60U the Right Cylinder?
When sizing this actuator, the neighbouring Ø32 bore offers 402.2 N of push at 0.5 MPa if your load is lighter, while no larger MI option exists for exceeding the 879.6 N push capacity available at 0.7 MPa. The 1/4" port and M12x1.25 male rod thread are fixed by the 40 mm bore. This specific SKU lacks the -S magnet, meaning it cannot accept CMSG, DMSG or EMSG sensors; specify the -S variant if position feedback is required.
Remember that venting the air or centring the valve causes the piston to drift, as the internal TPU bumpers only soften stroke-end impacts without locking the rod. To suspend a load safely mid-stroke, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 MI40X60U 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. The air port is 1/4" and the male rod thread is M12x1.25.
No, this specific SKU does not include a magnet, so CMSG, DMSG or EMSG switches cannot be used. You must select the -S variant for position sensing. The unit relies on fixed TPU bumper pads for end-of-stroke deceleration, not an adjustable air cushion.
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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.
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Most inquiries answered within 7-8 hours.
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