
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X50SCMSDB is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 50mm 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, this double-acting round-body mini cylinder handles heavier automation tasks with ease. The stainless-steel barrel and Ø12 mm rod resist mild corrosion, making it highly suitable for damp or washdown environments where painted steel fails. Fixed TPU bumper pads absorb the impact at stroke extremes, decelerating the piston smoothly without the complexity of adjustable cushions. The 1/4" port feeds air rapidly to maintain speeds between 30 and 800 mm/s.
For practical sizing, plan for a safe working load of roughly 241 N, which is about 60 percent of the 0.5 MPa rating. In vertical lifting scenarios, this translates to hoisting approximately 20.5 kg safely with a 2:1 margin. The built-in magnet (-S) supports CMSG, DMSG and EMSG switches for position detection, while the CM round end cover pairs with the SDB pivot block for secure, articulated mounting.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X50SCMSDB |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 50 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. |
| ×50 | 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 heavy routing flap on a logistics conveyor, using its 402.2 N thrust to push dense parcels onto secondary sorting chutes.
Drives a mechanical folder arm on a corrugated box erector, where the stainless construction withstands dusty, humid packing facility conditions.
Raises and lowers a solid stop block on a roller conveyor to halt loaded pallets, safely managing vertical lifts up to 20.5 kg.
When sizing this 32 mm bore actuator, compare your actual load against its 402.2 N push and 345.6 N pull capabilities at 0.5 MPa. If your application requires less force, stepping down to a 25 mm bore provides 245.3 N of push; conversely, moving up to a 40 mm bore yields 628.3 N for heavier demands. Although the 50 mm stroke is short and highly resistant to rod bending, ensure your clevis arrangement accommodates the side loads.
Because this is a standard double-acting cylinder, it will drift if air pressure drops or the valve is centred—the fixed bumpers only soften the end of travel and act as neither a lock nor a brake. To suspend a load safely during an emergency stop, integrate an external pilot-operated check valve or a dedicated rod lock. The included SDB pivot block and CM rear cover supply robust articulation, and the internal magnet enables reliable electronic or reed sensor feedback.
Quick checklist
This 32 mm bore cylinder features a 1/4" air port and an M10x1.25 male rod thread. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, 563 N push and 483.8 N pull at 0.7 MPa, with a theoretical maximum of 82 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet compatible with CMSG, DMSG and EMSG switches. For impact absorption, it relies on fixed TPU bumper pads that decelerate the piston at the ends; it does not have an adjustable air cushion.
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