Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175SU 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 MI40X175SU
Delivering serious thrust in a compact riveted format, the AirTAC MI40X175SU is a double-acting round-body mini cylinder built for demanding 40 mm bore tasks. It pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa, while the stainless-steel barrel and Ø16 rod shrug off mild corrosion in damp or washdown environments. The integrated U back cover mounts at 90 degrees for space-saving pivot installations, and the built-in magnet (-S) supports CMSG, DMSG and EMSG switches for exact position detection.
Because the 628.3 N rating represents an ideal maximum, plan for a safe working load of roughly 377 N to account for friction and real-world dynamics. This translates to lifting about 32 kg vertically with a sensible 2:1 safety margin. Fixed TPU bumper pads absorb the shock at stroke extremes to protect your tooling, and the 1/4" port ensures high airflow for rapid cycling across the 175 mm stroke.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175SU |
|---|---|
| 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 MI40X175SU
| 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 MI40X175SU Is Used
Stamping Press Ejection
Uses the 628.3 N push force to knock heavy stamped metal parts out of a die, relying on the 90-degree U cover to mount flush against the press frame.
Package Diverting Arm
Swings a heavy diverter gate across a 175 mm stroke to sort dense parcels, with the stainless construction surviving dusty logistics hub environments.
Pallet Lift Gate
Raises a lightweight pallet stopper gate, safely lifting roughly 32 kg of vertical load thanks to the robust 40 mm bore and double-acting air power.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X175SU the Right Cylinder?
This 40 mm bore sits at the top of the MI range, so if you need less force, the Ø32 model provides 402.2 N of push at 0.5 MPa; there is no larger standard MI bore available. The 175 mm stroke is well within the 500 mm maximum, but at this extension you must carefully manage side loading to prevent rod bending and premature seal wear. The U-style rear cover provides a 90-degree pivot mount, which pairs well with the available LB foot, FA flange and TC trunnion brackets.
Remember that venting the air supply or centering the control valve will cause the piston to drift, as the fixed bumpers only decelerate the end of stroke rather than locking the rod. To suspend a load safely during an emergency stop or air loss, fit an external rod lock or a pilot-operated check valve. The -S magnet allows seamless integration with CMSG, DMSG or EMSG sensors.
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 MI40X175SU FAQ
At 0.5 MPa it provides 628.3 N push and 527.8 N pull. At 0.7 MPa it provides 879.6 N push and 738.9 N pull. The theoretical maximum force is 128.1 kgf at 1.0 MPa. This 40 mm bore cylinder uses a 1/4" air port and operates between 0.15 and 1.0 MPa.
The base MI uses fixed TPU bumper pads to decelerate the stroke end and does not feature adjustable air cushioning; for variable cushioning you would need the MIC variant. However, this MI40X175SU model includes a built-in magnet (-S), allowing you to mount CMSG, DMSG or EMSG switches for precise end-of-stroke detection.
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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.
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Most inquiries answered within 7-8 hours.
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