
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X350SCM is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 350mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X350SCM is a double-acting round-body mini cylinder built for demanding mid-range automation. The stainless-steel barrel and Ø12 mm piston rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown-prone environments. A 1/4 inch port drives the 30-800 mm/s speed range, while fixed TPU bumper pads absorb the impact at stroke ends.
For practical sizing, plan for roughly 241 N of real work at 0.5 MPa, which translates to safely lifting about 20.5 kg vertically with a 2:1 margin. This 350 mm stroke unit features a CM round rear cover and an internal magnet for position sensing. Remember that the standard bumper pads only decelerate the piston; they do not act as a lock to hold a load in place if air pressure drops.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X350SCM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| 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. Note: the Ø32 bore is a larger, non-ISO-6432 size.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×350 | 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 a routing flap on a logistics conveyor, using the 402.2 N push force to reliably redirect heavy cartons onto secondary sorting lanes.
Raises lightweight industrial totes through a 350 mm stroke, safely handling loads up to 20.5 kg with the built-in 2:1 safety margin.
Drives an automated hold-down mechanism in a machining cell, relying on the stainless construction to withstand coolant mist and metal debris.
When sizing this Ø32 bore, compare your actual load against the 402.2 N push and 345.6 N pull figures at 0.5 MPa. If your application requires less force, stepping down to a Ø25 bore provides 245.3 N of push, while moving up to a Ø40 bore yields 628.3 N for heavier demands. Because this 350 mm stroke is quite long, be mindful of potential rod bending and side-loading issues during installation.
The S in this SKU indicates a built-in magnet, allowing you to mount CMSG, DMSG, or EMSG sensors directly for end-of-stroke confirmation. The CM round end back cover offers a specific rear profile for your mounting arrangement. If the machine must maintain vertical position during an air loss event, add an external rod lock or pilot check valve, as the piston will drift without pressure.
Quick checklist
This double-acting cylinder uses a 1/4 inch air port and a male M10x1.25 rod thread. At 0.5 MPa it provides 402.2 N of push and 345.6 N of pull force. At 0.7 MPa, push increases to 563 N and pull to 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa.
The Ø32 bore falls outside the ISO 6432 standard, so it is classified simply as a round-body mini cylinder rather than an ISO interchange unit. Additionally, the fixed TPU bumper pads only decelerate the stroke end; they do not lock the rod. You must use an external pilot check valve to hold a load if air pressure is lost.
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