Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350R
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350R 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 MI25X350R
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles demanding 350 mm linear movements. The Ø25 mm bore operates on a 1/8 inch port, while the M10x1.25 male rod thread secures your tooling. Its riveted stainless barrel and rod shrug off mild corrosion, outlasting painted alternatives in damp or washdown settings. Built-in fixed TPU bumper pads absorb stroke-end impact to protect the mechanism.
For practical sizing, plan for roughly 147 N of usable work at 0.5 MPa, which translates to safely lifting about 12.5 kg vertically. The R back cover features an axial-in port orientation, simplifying rear plumbing in confined spaces. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350R Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350R |
|---|---|
| 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 MI25X350R
| 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 MI25X350R Is Used
Diverting Heavy Cartons
Uses the 245.3 N push at 0.5 MPa to reliably shove heavy packaged goods across a transfer section without stalling under friction.
Vertical Parts Lift
Raises lightweight jigs or components weighing up to 12.5 kg through a 350 mm vertical descent, leveraging the 2:1 safety margin for stable elevation.
Damp Environment Sorting
The stainless-steel barrel and rod endure humid food-packaging lines, resisting mild corrosion while actuating a sorting flap over a long 350 mm travel.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X350R the Right Cylinder?
When sizing this 25 mm bore, stepping down to a 20 mm cylinder drops the 0.5 MPa push force to 157 N, whereas moving up to a 32 mm bore raises it to 402 N. The 350 mm stroke is well within the 500 mm maximum standard stroke, avoiding made-to-order delays. However, at this extended length, side loads pose a real rod-bending risk; ensure your guide mechanism keeps the load purely axial. The standard ISO 6432 mounting interface means it drops directly into conventional mini-cylinder brackets and clevises.
Remember that venting the air supply or centering the directional valve causes the piston to drift, as the TPU bumpers only decelerate the end of travel and act as neither a brake nor a lock. To suspend a vertical load securely during an air loss event, integrate 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 MI25X350R FAQ
This 25 mm bore cylinder features a 1/8 inch port and an M10x1.25 male rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, increasing to 343.4 N push and 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot host CMSG, DMSG, or EMSG switches. You would need the -S variant (MI25X350R-S) to enable magnetic sensing. The unit relies on fixed TPU bumper pads for end-of-stroke deceleration rather than an adjustable air cushion.
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