Airtac MI25~40 Stainless Steel Mini Cylinder MI40X75CM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X75CM is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 75mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke75 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 MI40X75CM
Delivering a robust 628.3 N of push force at 0.5 MPa, the AirTAC MI40X75CM is a heavy-duty round-body mini cylinder built for demanding automation. This double-acting actuator features a stainless-steel barrel and piston rod, offering reliable mild-corrosion and washdown resistance that outlasts painted alternatives in damp environments. The unit includes a CM round rear cover and utilizes a 1/4 inch air port.
Instead of adjustable cushions, fixed TPU bumper pads decelerate the piston at the stroke ends to absorb impact. For practical sizing, plan for a safe working load of about 377 N, which equates to lifting roughly 32 kg vertically with a 2:1 safety margin. Because this specific SKU lacks the -S suffix, it cannot accept CMSG, DMSG, or EMSG magnetic sensors.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X75CM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X75CM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MI40X75CM
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 MI40X75CM Is Used
Stamping Press Feeders
Provides the 628.3 N push force required to advance heavy metal strips into a progressive stamping die.
Pallet Diverters
Handles the lateral redirection of loaded pallets on a packaging line, utilizing the 527.8 N pull force for positive retraction.
Heavy Gate Actuators
Opens and closes substantial access doors on processing equipment, benefiting from the stainless build in humid facilities.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X75CM the Right Cylinder?
As the largest bore in the MI family, there is no larger standard size to step up to if the 628.3 N push at 0.5 MPa is insufficient; you would need to explore a different cylinder series entirely. Stepping down to the Ø32 bore drops the push force to 402.2 N at 0.5 MPa, so the Ø40 is the right choice when you need that extra 226 N of thrust. The CM round end provides a clean rear profile for through-hole mounting. Remember that the TPU bumpers only soften the stroke end; if air pressure drops, the piston will drift and cannot hold a vertical load. To lock a suspended weight in place, integrate an external rod lock or a pilot-operated check valve.
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 MI40X75CM 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 model uses a 1/4 inch air port and operates at speeds of 30-800 mm/s.
As a Ø40 round-body mini cylinder, it exceeds the ISO 6432 mounting dimensions and is classified simply as a round-body mini cylinder rather than an ISO standard unit. Additionally, because this SKU lacks the -S magnet option, it cannot host CMSG, DMSG, or EMSG magnetic switches.
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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