Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20U
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20U is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 20mm 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
- Stroke20 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 MI25X20U
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust short-stroke tasks. The Ø25 mm bore conforms to ISO 6432 mounting dimensions, dropping directly into standard mini-cylinder brackets and clevises for easy design integration. Its 1/8" port and M10x1.25 male rod thread provide a solid pneumatic and mechanical interface.
The riveted stainless barrel and rod resist mild corrosion, offering a real edge over painted alternatives in damp or washdown environments. Fixed TPU bumper pads absorb stroke-end impact without adding bulk. For practical sizing, plan for roughly 147 N of actual work at 0.5 MPa, which means it can safely lift about 12.5 kg vertically with a 2:1 safety margin.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20U Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 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 MI25X20U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 MI25X20U Is Used
Short-Stroke Clamping
Secures aluminum extrusions during CNC milling using the 20 mm stroke and 245 N of thrust, holding parts firmly without overtravel.
90-Degree Press Fit
Utilizes the U-type rear cover to seat small bearings into housings on a compact assembly line, delivering precise downward force.
Diverter Gate Actuation
Pivots a stainless routing flap on a packaging conveyor, where the corrosion-resistant build withstands periodic washdowns.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20U the Right Cylinder?
When sizing this 20 mm stroke unit, the smaller Ø20 bore yields 157 N of push at 0.5 MPa, while the larger Ø32 provides 402 N, making this Ø25 a strong middle ground for moderate force. The U suffix specifies a 90-degree rear cover, altering the port and pivot orientation for tight spatial constraints. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches; add the -S variant if you require electronic sensing.
Note that a plain double-acting cylinder drifts when air is lost or the valve is centered, as the TPU bumpers only decelerate the stroke end and act as neither a lock nor a brake. To suspend a vertical load safely, 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 MI25X20U FAQ
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it yields 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa, and the air port is 1/8".
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must select the -S magnet variant to enable electronic position sensing.
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 MI25X20U
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.