Airtac MI25~40 Stainless Steel Mini Cylinder MI25X550SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X550SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 550mm 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
- Stroke550 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 MI25X550SCM
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles demanding actuation with a 550 mm stroke. Because 550 mm exceeds the 500 mm standard limit for this bore, it is produced as a non-standard, made-to-order unit. The stainless barrel and Ø10 mm rod naturally resist mild corrosion and washdown, giving it a real edge over painted-steel alternatives in damp processing areas. Its riveted construction keeps the body compact, while the built-in piston magnet (-S) directly supports CMSG, DMSG and EMSG reed or electronic switches for position confirmation.
The CM round end back cover provides a clean rear enclosure for straightforward port orientation. Fixed TPU bumper pads absorb the impact at stroke extremes to protect the mechanism. For practical sizing, plan for roughly 147 N of real work at 0.5 MPa, which equates to lifting about 12.5 kg vertically with a safe 2:1 margin. Air connects via a 1/8" port, and the male M10x1.25 rod thread secures tooling.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X550SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X550SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 550 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 MI25X550SCM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×550 | 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 MI25X550SCM Is Used
Packaging Line Diverter
Uses the 245.3 N thrust at 0.5 MPa to push cartons across a transfer belt, with the 550 mm reach spanning wide conveyor lanes.
Dough Press Descender
Lowers a forming head in a food-grade environment where the stainless steel barrel resists washdown chemicals and daily moisture.
Long-Reach Parts Ejector
Cycles deep into a machine bed to clear stamped metal parts, relying on the 550 mm non-standard stroke to access remote tooling zones.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X550SCM the Right Cylinder?
When sizing this 25 mm bore actuator, compare it against adjacent bores: a 20 mm bore yields 157 N of push at 0.5 MPa, while stepping up to a 32 mm bore provides 402 N. This model sits perfectly in the middle for medium-force tasks. The 550 mm stroke is highly extended for a mini cylinder, so carefully manage side loading—any offset mass on a rod this long can induce bending moments and premature seal wear, making a guided carriage advisable.
This SKU features the -S magnet for CMSG/DMSG/EMSG sensors and the CM round end cover. Remember that a standard double-acting cylinder drifts when air is lost or the valve is centered; the TPU bumpers only decelerate the stroke end and do not function as a locking brake. To suspend a load safely during an outage, 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 MI25X550SCM FAQ
This 25 mm bore cylinder features a 1/8" air 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.
It uses the ISO 6432 mounting interface for standard mini-cylinder brackets, but it features fixed TPU bumper pads that decelerate the stroke end rather than an adjustable air cushion. The 550 mm stroke is a non-standard made-to-order length exceeding the 500 mm maximum standard stroke for this bore.
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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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