Airtac MI25~40 Stainless Steel Mini Cylinder MI25X80SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X80SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 80mm 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
- Stroke80 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 MI25X80SU
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 riveted construction uses a stainless barrel and rod to resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. An 80 mm stroke operates at speeds from 30-800 mm/s, decelerated by fixed TPU bumper pads at both ends.
Because it carries the -S suffix, a built-in piston magnet allows direct mounting of CMSG, DMSG or EMSG switches for position sensing. The Ø25 bore conforms to ISO 6432 mounting dimensions, dropping easily into standard mini-cylinder brackets and clevises. It breathes through a 1/8" port and features a U-type back cover that orients the air supply 90 degrees for tight machine layouts. Plan for roughly 147 N of actual work at 0.5 MPa, which translates to lifting about 12.5 kg vertically with a safe 2:1 margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X80SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X80SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 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 MI25X80SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×80 | 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 MI25X80SU Is Used
Package Diverter Arm
Swings a sorting gate on a packaging line, using the 245.3 N thrust to push mixed cartons reliably at speeds up to 800 mm/s.
Textile Loom Tensioner
Maintains precise thread tension in a humid manufacturing environment, relying on the stainless steel rod to resist mild corrosion.
Pallet Stacking Stopper
Extends 80 mm to halt wooden pallets on a low-profile roller conveyor, safely absorbing the impact via fixed TPU bumper pads.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X80SU the Right Cylinder?
When sizing this unit, the Ø20 bore below offers 157.0 N of push at 0.5 MPa, while stepping up to the Ø32 provides 402.2 N if your application demands more muscle. The 80 mm stroke is well within the 500 mm maximum standard stroke for this bore, keeping the rod bending risk low. The U rear cover provides a 90-degree port orientation, which helps clear adjacent mechanisms.
Remember that a plain double-acting cylinder like this will drift if air pressure drops or the valve is centred, as the fixed TPU bumpers only soften the stroke end rather than locking the load. For suspended or vertical loads that must hold position during an air loss event, incorporate an external rod lock or a pilot-operated check valve into your 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 MI25X80SU FAQ
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it provides 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port size is 1/8".
No, it uses fixed TPU bumper pads that decelerate the piston at the stroke ends. For adjustable cushioning, look at the MIC variant. This model includes the -S magnet for CMSG/DMSG/EMSG sensors and uses a U-type 90-degree rear cover.
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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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