Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175CM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175CM is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 175mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke175 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 MI40X175CM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles substantial actuation tasks. The stainless-steel barrel and Ø16 mm piston rod shrug off mild corrosion, making it superior to painted alternatives in damp or washdown environments. It operates at speeds of 30-800 mm/s, utilizing a 1/4" port and M12x1.25 male rod thread.
Because the rated output rarely translates perfectly to real-world friction, planning for a safe working load of roughly 377 N (about 60% of the 0.5 MPa push figure) ensures reliable motion. This equates to lifting approximately 32 kg vertically with a 2:1 safety margin. The riveted construction keeps the unit compact, while fixed TPU bumper pads absorb stroke-end impact. Note that this specific SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG sensors without upgrading to an -S variant.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175CM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175CM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 175 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 MI40X175CM
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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 MI40X175CM Is Used
Stamping Press Ejection
Provides the robust 628 N push force required to knock heavy stamped metal parts out of a die on an automated press line.
Pallet Diverting Arm
Swings a heavy diverter gate on a packaging conveyor to route dense pallets, utilising the full 175 mm stroke to clear the lane.
Carton Flap Folding
Drives a mechanical arm to fold thick cardboard flaps on large cartons prior to sealing, leveraging the stainless build for humid packing areas.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175CM the Right Cylinder?
When sizing this 40 mm bore actuator, compare it against neighbouring bores: the Ø32 generates 402.2 N push at 0.5 MPa, whereas this Ø40 provides 628.3 N. As the largest available MI size, there is no larger standard bore to step up to if your system demands more power. The 175 mm stroke is well within the 500 mm maximum, keeping the rod bending risk low for standard loads.
The CM round end dictates the rear mounting orientation, and you can pair the body with LB foot, FA flange, SDB pivot or TC trunnion brackets. Remember that a standard double-acting cylinder drifts when air is lost or the valve is centred—the TPU pads only decelerate the stroke end and act as neither a lock nor a brake. To suspend a load safely, 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 MI40X175CM FAQ
This 40 mm bore cylinder features a 1/4" air port and an M12x1.25 male rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant for sensing. Additionally, the fixed TPU bumper pads only decelerate the stroke end; they do not function as an adjustable air cushion like the MIC variant.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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