
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X200SR is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 200mm 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 workloads within a compact footprint. The Ø25 mm bore operates on a 1/8" port and features a 200 mm stroke. Its stainless barrel and rod resist mild corrosion, offering a distinct advantage over painted alternatives in damp or washdown environments. Fixed TPU bumper pads absorb stroke-end impacts to protect the mechanism.
For practical sizing, plan for roughly 147 N of actual work at 0.5 MPa to maintain a safe margin, which equates to lifting about 12.5 kg vertically. The built-in piston magnet (-S) supports CMSG, DMSG, and EMSG switches for position sensing, while the R back cover provides an axial-in port orientation for streamlined plumbing.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X200SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 200 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. |
| ×200 | 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.
Actuates routing gates on packaging lines, using the 245 N thrust to push cartons onto secondary belts at high cycling speeds.
Deploys a 200 mm stroke stop block to halt pallets at a workstation, relying on the stainless build to endure dusty industrial settings.
Secures aluminum extrusions during machining operations, providing consistent clamping force without marking the workpiece.
When sizing this 245.3 N (at 0.5 MPa) unit, consider the neighbouring bores: step down to a Ø20 for 157 N, or up to a Ø32 for 402.2 N if the load requires more authority. The 200 mm stroke is well within the 500 mm maximum, though at full extension the Ø10 rod is susceptible to bending if subjected to heavy lateral loads—ensure proper guiding. Because this is a double-acting cylinder, air drives both directions; a plain actuator will drift if air pressure is lost or the valve is centered, so an external rod lock or pilot check valve is required to hold a load securely. Mounting options include LB foot, FA flange, SDB pivot, and TC trunnion.
Quick checklist
This Ø25 mm bore cylinder features a 1/8" 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 conforms to ISO 6432 mounting dimensions for easy bracket integration, but it uses fixed TPU bumper pads for end-of-stroke deceleration rather than adjustable air cushions. The -S suffix indicates a built-in magnet for CMSG, DMSG, or EMSG sensors.
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