Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 400mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke400 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM
Delivering 402.2 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial actuation tasks across a 400 mm travel distance. The Ø32 mm bore operates via a 1/8 inch port and features a male M10x1.25 rod thread. Its stainless-steel barrel and piston rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. The riveted round body remains compact despite the high force output.
For practical sizing, plan for a safe working load of roughly 241 N rather than the absolute maximum rating. This translates to lifting about 20.5 kg vertically with a 2:1 safety margin, allowing you to match the actuator to real part weights. The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing. A CM round end back cover completes the rear assembly, while fixed TPU bumper pads absorb the impact at stroke extremes without offering adjustable cushioning.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 400 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.
Theoretical Output Force (Ø32mm)
| 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.
Model Code: Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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.
Where the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM Is Used
Pallet Diversion Gate
Deploys the 400 mm stroke to push heavy timber pallets off a high-speed packaging line, utilising the 402.2 N push force to overcome sliding friction.
Vertical Parts Elevator
Lifts approximately 20.5 kg of automotive castings between conveyor tiers, relying on the stainless construction to endure humid foundry conditions.
Film Roll Indexing
Shifts large packaging film rolls laterally into a loading cradle, with the CM round end cover facilitating compact rear pivot mounting.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM the Right Cylinder?
When sizing this 400 mm stroke actuator, compare it against adjacent bores: the Ø25 generates 245.3 N of push at 0.5 MPa, whereas the larger Ø40 provides 628.3 N. If your application requires variable air cushioning to handle high-speed kinetic energy at the end of a long 400 mm travel, consider the MIC variant instead of the standard fixed bumper pads. The extended rod length means you must carefully manage side loads to prevent rod bending and premature seal wear.
Because this is a plain double-acting cylinder, the piston will drift if air pressure drops or the valve is centred; the TPU pads only decelerate the stroke end and never act as a holding brake. To suspend a load safely in mid-air, integrate an external pilot-operated check valve or a dedicated rod lock. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion brackets.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MI25~40 Stainless Steel Mini Cylinder MI32X400SCM FAQ
This Ø32 mm bore model features a 1/8 inch air port and a Ø12 mm rod with an M10x1.25 male thread. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, increasing to 563 N push and 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
No, the piston will drift if air pressure is lost or the valve is centred. The fixed TPU bumper pads only decelerate the stroke end and do not function as a locking brake. To maintain a vertical position, you must add an external rod lock or a pilot-operated check valve.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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