Airtac MI25~40 Stainless Steel Mini Cylinder MI25X85SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X85SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 85mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ25 mm
- Stroke85 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- 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 MI25X85SU
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust actuation tasks. The 85 mm stroke operates at 30-800 mm/s, and the Ø25 barrel features a 1/8" port with an M10x1.25 male rod thread. Its stainless construction resists mild corrosion and washdown, outperforming painted alternatives in damp environments.
The built-in magnet (-S) supports CMSG, DMSG, and EMSG switches for position sensing, while the U back cover provides a 90-degree port orientation. Plan for roughly 147 N of actual work at 0.5 MPa to ensure reliable operation. Fixed TPU bumper pads absorb end-of-stroke impacts, and the ISO 6432 mounting interface ensures compatibility with standard mini-cylinder brackets.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X85SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X85SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 85 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MI25X85SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×85 | 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 MI25X85SU Is Used
Package Diverter
Pushes medium-weight cartons off a main conveyor belt using the 245.3 N thrust and 85 mm stroke.
Clamp Mechanism
Secures cardboard folding cartons during a sealing process, utilizing the 206.1 N pull force for retention.
Parts Ejector
Ejects formed metal components from a press bed, relying on the stainless build for oily environments.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X85SU the Right Cylinder?
When sizing this 25 mm bore, the smaller Ø20 generates 157.0 N push at 0.5 MPa, whereas the larger non-ISO Ø32 provides 402.2 N. This model includes the U 90-degree back cover and the -S magnet for electronic or reed sensors. You can utilize LB foot, FA flange, SDB pivot, or TC trunnion mounts. For the 85 mm stroke, minimize side loads to prevent rod bending.
Because the fixed TPU pads only decelerate the stroke end, the piston will drift if air is lost or the valve centers. To suspend a load securely, install an external rod lock or a pilot-operated check valve rather than relying on the bumper.
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 MI25X85SU FAQ
It features a 1/8" port and generates 245.3 N push / 206.1 N pull at 0.5 MPa, and 343.4 N push / 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
Yes, the -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG switches. The U back cover provides a 90-degree port orientation for tight spaces, and it uses the ISO 6432 mounting interface.
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 MI25X85SU
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