Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20SCM 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 MI25X20SCM
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 bore uses a 1/8" port and an M10x1.25 male rod thread. Its riveted stainless barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. Because it carries the -S suffix, a built-in piston magnet is included for position sensing with CMSG, DMSG or EMSG switches.
The fixed TPU bumper pads absorb stroke-end impact to protect your mechanism, though they decelerate rather than cushion adjustably. For practical sizing, plan for about 147 N of real work at 0.5 MPa, which translates to lifting a 12.5 kg part vertically with a safe 2:1 margin. The CM round end back cover completes the compact assembly, and the unit operates at 30-800 mm/s across a -20 to +70 C range.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20SCM |
|---|---|
| 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 MI25X20SCM
| 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 MI25X20SCM Is Used
Short-Stroke Part Ejection
Ejects machined aluminium components from a CNC fixture using a rapid 20 mm travel, leveraging the 245.3 N push force to overcome friction.
Divert Gate Actuation
Pivots a divert gate on a packaging line, where the stainless steel construction withstands daily washdown without corroding.
Pallet Stopper Block
Deploys a 20 mm stop block to halt pallets on a roller conveyor, safely absorbing the impact via fixed TPU bumper pads.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X20SCM the Right Cylinder?
Choosing this Ø25 bore makes sense when the 157 N push of the Ø20 class is insufficient, but you want to avoid the bulk of the Ø32 size that pushes 402.2 N. With its 20 mm stroke, this model is optimized for very short clamping or ejecting motions. Remember that a standard double-acting cylinder drifts if air pressure drops or the valve is centered; the bumpers only soften the end of travel and will not lock the load. For vertical or safety-critical holding, add an external rod lock or a pilot-operated check valve.
The built-in magnet (-S) pairs directly with CMSG, DMSG and EMSG sensors for end-of-stroke confirmation. Utilizing the ISO 6432 mounting interface, the body drops directly into standard mini-cylinder brackets and clevises. The CM round end back cover offers a clean, versatile rear mounting orientation for your fixture.
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 MI25X20SCM FAQ
This double-acting cylinder delivers a push of 245.3 N and a pull of 206.1 N at 0.5 MPa. At 0.7 MPa, push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. It features a 1/8" air port and an M10x1.25 male rod thread.
No, the base MI uses fixed TPU bumper pads that decelerate the stroke end but do not offer adjustable air cushioning; for adjustable cushions, look at the MIC variant. However, the -S suffix means it has a built-in magnet ready for CMSG, DMSG or EMSG reed and electronic switches.
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1-Year Warranty
Covers non-human-caused product damage.
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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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