Airtac MI25~40 Stainless Steel Mini Cylinder MI40X600SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X600SU is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 600mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke600 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 MI40X600SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty automation tasks. The stainless-steel barrel and Ø16 mm rod shrug off mild corrosion, giving it a real edge over painted-steel units in damp or washdown environments. A 600 mm stroke makes this a non-standard, made-to-order configuration that exceeds the 500 mm standard maximum for this bore. The U back cover provides a 90-degree port orientation for tight machinery layouts.
With a 1/4" air port and an M12x1.25 male rod thread, the riveted construction remains compact while managing substantial loads. Plan for roughly 377 N of actual work at 0.5 MPa, which safely lifts about 32 kg vertically with a 2:1 margin. Fixed TPU bumper pads absorb stroke-end impacts, and the built-in -S magnet supports CMSG, DMSG, and EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X600SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X600SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 600 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 MI40X600SU
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×600 | 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 MI40X600SU Is Used
Heavy Part Ejection
Uses the full 879.6 N push at 0.7 MPa to knock heavy machined metal castings out of CNC fixtures on an automated production line.
Pallet Diversion
Extends 600 mm to push loaded material handling pallets onto a secondary packaging track without requiring a secondary actuator.
Vertical Gate Control
Lifts a 30 kg access hatch on a washdown station, relying on the stainless steel construction to resist humid, high-moisture conditions.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X600SU the Right Cylinder?
As the largest bore in the MI family, this Ø40 model sits above the Ø32 bore, which provides 402.2 N of push at 0.5 MPa. If you need less force, step down to the Ø32; there is no larger standard MI bore available. Because the 600 mm stroke exceeds the 500 mm standard limit, carefully evaluate side-loading to prevent rod bending over that long extension.
Remember that a plain double-acting cylinder drifts when air is lost or the valve is centered—the fixed bumpers only decelerate the end of travel and never act as a lock. To suspend a vertical load safely, install an external rod lock or a pilot-operated check valve. The U 90-degree rear cover and -S magnet give you flexible mounting and sensor integration.
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 MI40X600SU FAQ
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. This bore uses a 1/4" air port and a Ø16 mm piston rod.
No, the piston drifts if air is lost or the valve is centered; the fixed TPU bumper pads only decelerate the stroke end and do not function as a brake. For vertical load holding, use an external rod lock or pilot check valve. This unit also includes a -S magnet for CMSG, DMSG, or EMSG sensors.
Authorized Export Seller
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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