Airtac MI25~40 Stainless Steel Mini Cylinder MI40X225CM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X225CM is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 225mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 MI40X225CM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles heavier automation tasks. The Ø40 mm bore operates on a 1/4" port and features a Ø16 mm piston rod with an M12x1.25 male thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. Fixed TPU bumper pads absorb impact at the stroke ends, while the CM round end cover completes the compact riveted construction.
For practical sizing, plan for about 377 N of real work at 0.5 MPa, which lets you lift roughly 32 kg vertically with a 2:1 safety margin. Operating pressure spans 0.15-1.0 MPa across a 30-800 mm/s speed range. Because this SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X225CM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X225CM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 Ø40 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MI40X225CM
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 MI40X225CM Is Used
Package Diverting
Pushes heavy cartons on a washdown packaging line using the full 628.3 N thrust at 0.5 MPa.
Material Pressing
Provides steady downward clamping force for assembly fixtures, relying on fixed TPU pads to soften impact.
Pallet Handling
Extends 225 mm to index wooden pallets in humid logistics hubs where the stainless rod resists corrosion.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X225CM the Right Cylinder?
When sizing this 225 mm stroke actuator, compare it against the adjacent bores: the Ø32 delivers 402.2 N of push at 0.5 MPa, while the Ø40 is the largest available MI size at 628.3 N. The extended 225 mm travel demands careful mounting to prevent rod bending under side loads. The CM round end cover dictates a specific rear porting and mounting orientation. If your process drops air pressure or the valve centres, this plain cylinder will drift and cannot hold a load; the TPU pads only decelerate the end of stroke. Add an external rod lock or a pilot-operated check valve for secure vertical holding.
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 MI40X225CM FAQ
This double-acting cylinder pushes 628.3 N and pulls 527.8 N at 0.5 MPa. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. It uses a 1/4" air port with a Ø16 mm rod.
No, this specific SKU lacks the internal magnet required for switches. You must select an -S variant to use CMSG, DMSG or EMSG sensors. The unit features a CM round end cover and fixed TPU bumper pads rather than an adjustable air cushion.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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