Airtac MI25~40 Stainless Steel Mini Cylinder MI25X100R
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X100R is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 100mm 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
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
About the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X100R
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work in tight spaces. The Ø25 mm bore uses a 1/8" port and an M10×1.25 male rod thread, pairing perfectly with the rear R axial-in cover for streamlined plumbing directly along the machine frame.
The stainless barrel and rod shrug off mild corrosion, outlasting painted alternatives in damp or washdown environments. Its riveted construction keeps the body compact, while fixed TPU bumper pads absorb stroke-end impact without the tuning hassle of an adjustable cushion. Plan for roughly 147 N of actual work at 0.5 MPa, which translates to safely lifting about 12.5 kg vertically against gravity.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X100R Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X100R |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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 MI25X100R
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | 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 MI25X100R Is Used
Package Diverter Gate
Swings a routing flap on a packaging line, utilizing the 245.3 N push force to deflect heavy cartons at high speed.
Parts Press Insertion
Presses small bearings into housings on an assembly jig, relying on the fixed TPU bumpers to soften the 100 mm downward stroke end.
Pallet Stopper Arm
Deploys a physical stop block for pallets on a gravity roller conveyor, holding position against inertia in damp washdown zones.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X100R the Right Cylinder?
This 100 mm stroke sits well within the 500 mm maximum for the Ø25 bore, but at mid-stroke extensions you must watch for side loads that could bend the Ø10 mm rod. If your task needs less push, the Ø20 bore generates 157 N at 0.5 MPa; stepping up to the Ø32 yields 402 N for heavier demands. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG sensors. You can mount it via LB foot, FA flange, SDB pivot or TC trunnion brackets.
Remember that venting the air supply causes the piston to drift, as the TPU bumpers only decelerate the end of travel and act neither as a lock nor a brake. To suspend a load securely during an air loss or valve shift, fit an external rod lock or pilot-operated check valve.
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 MI25X100R 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 size is 1/8".
No, this specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant for position sensing. It uses standard ISO 6432 mounting dimensions for mini brackets.
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