
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SR is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 15mm stroke, 1/8" 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 MI32X15SR is a robust round-body mini cylinder built for short-stroke clamping. Its stainless-steel barrel and Ø12 mm rod shrug off mild corrosion, making it highly suitable for damp washdown environments. The riveted construction keeps the unit compact, while fixed TPU bumper pads absorb the impact at stroke extremes without offering adjustable cushioning.
This 15 mm stroke variant features an R back cover with an axial-in 1/8 inch port for tidy plumbing in tight spaces. Because it carries the -S suffix, it includes a piston magnet for direct mounting of CMSG, DMSG or EMSG switches. Plan for roughly 241 N of real work at 0.5 MPa, which translates to safely lifting a 20.5 kg part vertically with a 2:1 margin.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X15SR |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 15 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. 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. |
| ×15 | 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.
Uses the 402.2 N extension force to grip heavy metal castings securely in CNC machining fixtures.
Executes rapid 15 mm shifts to deflect heavy cardboard cartons on a high-speed packaging line.
Kicks stamped components out of a forming die in tight quarters where a longer stroke would bind.
When sizing this 32 mm bore, stepping down to a 25 mm cylinder drops the 0.5 MPa push force to 245.3 N, whereas moving up to a 40 mm bore yields 628.3 N. The short 15 mm stroke minimizes rod-bending side loads, making it exceptionally rigid for brief, powerful ejection strokes. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion brackets.
Remember that venting the air supply causes the piston to drift, as the TPU bumpers only decelerate the end of travel and act neither as a lock nor a brake. To prevent a clamped part from dropping, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
This 32 mm bore cylinder uses a 1/8 inch port. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, or 563 N push and 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet, allowing you to attach CMSG, DMSG or EMSG switches directly to the body for stroke-end detection.
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