Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160SR
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160SR is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 160mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke160 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 MI40X160SR
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles demanding actuation tasks. The stainless-steel barrel and Ø16 mm piston rod shrug off mild corrosion, making it superior to painted alternatives in damp washdown environments. It features a 1/4" air port and an M12x1.25 male rod thread. Fixed TPU bumper pads absorb stroke-end impacts to protect your machinery.
Because it generates substantial thrust, you can plan for a real working load of roughly 377 N at 0.5 MPa, which translates to safely lifting about 32 kg vertically with a 2:1 margin. The built-in magnet (-S) supports CMSG, DMSG and EMSG sensors for position feedback, while the R back cover provides an axial-in port orientation to streamline your plumbing.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160SR Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160SR |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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 MI40X160SR
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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 MI40X160SR Is Used
Heavy Package Diverting
Pushes heavy cartons weighing up to 32 kg onto secondary packaging lines using its 628.3 N thrust and 160 mm travel.
Clamp Actuation
Secures thick metal or wood workpieces during CNC routing, utilising the stainless build to resist cutting fluid splash.
Vertical Pressing
Applies steady downward pressure for assembly inserts, relying on fixed TPU bumpers to soften the end impact.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X160SR the Right Cylinder?
When sizing this 40 mm bore, compare it against the 32 mm option (402.2 N push at 0.5 MPa) for lighter jobs, or step up if you need maximum thrust since 40 mm is the largest available MI bore. For the 160 mm stroke, ensure your mounting arrangement—whether LB foot, FA flange, SDB pivot or TC trunnion—prevents side loads that could bend the rod. The -S magnet enables CMSG/DMSG/EMSG switches for precise end-of-stroke detection.
Remember that air pressure alone will not hold this cylinder's position; if the valve is centred or air is lost, the piston drifts. The TPU bumpers only decelerate the stroke end and act as neither a brake nor a lock. To suspend a load safely, install 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 MI40X160SR FAQ
This 40 mm bore cylinder uses a 1/4" air port. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
Yes, the -S suffix means it has a built-in magnet for CMSG, DMSG and EMSG switches. However, it does not hold position on air loss; the piston drifts, so you need an external rod lock or pilot check valve for suspended loads.
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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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