
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X500SUTC is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 500mm 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.
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work over a 500 mm travel. The Ø25 bore conforms to ISO 6432 mounting dimensions, dropping directly into standard mini-cylinder brackets and clevises for straightforward design integration. Its riveted stainless barrel and Ø10 rod resist mild corrosion, outperforming painted alternatives in damp or washdown environments.
Equipped with a built-in piston magnet (-S), the unit supports CMSG, DMSG and EMSG reed or electronic switches for position sensing. At 0.5 MPa you can plan for roughly 147 N of actual work, letting you lift about 12.5 kg vertically with a safe 2:1 margin. Fixed TPU bumper pads absorb the impact at stroke extremes, and the 1/8" port drives a swift 30-800 mm/s operating speed.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X500SUTC |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 500 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.
| 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.
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×500 | 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.
Swings a heavy routing flap on a packaging line using the TC trunnion to pivot, relying on the 245.3 N push force to overcome friction at 0.5 MPa.
Lowers 12 kg metal stampings from an upper press level over 500 mm, safely managed within the 2:1 vertical lift margin of this bore size.
Moves wet test racks between stations in a humid laboratory, where the stainless steel barrel prevents mild corrosion and the -S magnet tracks position.
When sizing this 245.3 N (at 0.5 MPa) unit against the range, stepping down to a Ø20 bore yields 157.0 N of push, while moving up to a Ø32 bore provides 402.2 N. This model features a U 90-degree rear cover and a TC trunnion mount, ideal for pivoting mechanisms over the long 500 mm stroke. Because a 500 mm travel amplifies side-load leverage on the Ø10 rod, ensure your front mounting guides the load accurately to prevent rod bending.
Remember that the fixed TPU pads only soften end-of-stroke impacts; they do not act as a brake. If air pressure drops or the valve is centred, the piston will drift and drop the load. To maintain vertical position securely, fit an external rod lock or a pilot-operated check valve to the system.
Quick checklist
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it yields 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa. Air is supplied through a 1/8" port, and the male rod thread is M10x1.25.
No, the piston will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the stroke end and do not function as a lock. For vertical loads, you must install an external rod lock or pilot check valve. The -S magnet allows CMSG/DMSG/EMSG sensors to confirm position.
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