Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350SR
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350SR is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 350mm 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
- Stroke350 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 MI25X350SR
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles demanding mid-range tasks. The Ø25 mm bore uses a 1/8" port and an M10x1.25 male rod thread. Its riveted stainless barrel and rod resist mild corrosion, making it superior to painted alternatives in damp or washdown environments. The R back cover features an axial-in port orientation for tight spatial constraints.
Equipped with a built-in piston magnet (-S), it supports CMSG, DMSG, and EMSG switches for position sensing. The fixed TPU bumper pads decelerate the piston at stroke ends. For practical sizing, plan for roughly 147 N of usable 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 MI25X350SR Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 350 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 MI25X350SR
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×350 | 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 MI25X350SR Is Used
Package Diverting
Actuates routing gates on packaging lines, using its 245 N push force to pivot heavy cardboard cartons onto secondary conveyors.
Vertical Parts Lift
Raises lightweight industrial totes through a 350 mm vertical cycle, safely lifting components up to 12.5 kg with a 2:1 safety margin.
Washdown Sorting
Stainless construction survives damp food-processing environments, pushing sorted produce bins along stainless guide rails without corroding.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350SR the Right Cylinder?
This 350 mm stroke falls within the 500 mm maximum standard stroke for the Ø25 bore, but the extended length demands careful alignment to prevent rod bending and side-load wear. If you need less force, the Ø20 bore provides 157 N of push at 0.5 MPa; stepping up to the Ø32 bore yields 402 N. The ISO 6432 mounting interface allows seamless integration with standard mini-cylinder brackets and clevises.
Because the standard MI uses fixed bumpers rather than an adjustable air cushion, consider the MIC variant for high-speed cycling. Note that this cylinder cannot hold a load if air pressure drops or the valve is centered—the piston will drift. Install an external rod lock or pilot-operated check valve if static holding is required.
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 MI25X350SR FAQ
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N. At 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8".
It uses fixed TPU bumper pads that decelerate the stroke end but do not act as an adjustable air cushion. It cannot hold a load unpowered; the piston drifts on air loss. Use an external rod lock or pilot check valve for holding. The -S magnet enables CMSG/DMSG/EMSG sensors.
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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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