Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SR
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SR is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 10mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke10 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 MI40X10SR
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty actuation within a tight 10 mm stroke. The stainless-steel barrel and piston rod resist mild corrosion and washdown, outperforming painted alternatives in damp environments. A built-in magnet enables CMSG, DMSG, and EMSG switches for position sensing. The rear R cover features an axial-in port, keeping the 1/4" pneumatic connection neatly in line with the body.
For practical sizing, plan for roughly 377 N of real work at 0.5 MPa, which safely lifts about 32 kg vertically with a 2:1 margin. Fixed TPU bumper pads absorb the impact at the stroke extremes without adding bulk. Operating at speeds of 30-800 mm/s, it sustains pressures from 0.15 to 1.0 MPa.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SR Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SR |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 10 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 MI40X10SR
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×10 | 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 MI40X10SR Is Used
Short-Stroke Stamping
Applies the full 628.3 N push force to crimp small metal terminals or emboss thin packaging foils in a confined 10 mm travel distance.
Heavy Clamping Jigs
Secures dense composite workpieces on a CNC router table, using the stainless construction to withstand occasional coolant spray.
Compact Part Seating
Presses rigid bearings into aluminum housings on an automated assembly line, relying on the rear R axial port to minimize spatial footprint.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X10SR the Right Cylinder?
As the largest bore in the series, this 40 mm model is the top choice for maximum thrust, stepping up from the 32 mm option that provides 402.2 N at 0.5 MPa. The 10 mm stroke is extremely short, virtually eliminating rod-bending side-load concerns. Because the standard bumper pads only decelerate the stroke end and provide no braking force, you must add an external rod lock or pilot-operated check valve if the load needs to be held securely during air loss or valve centering. The -S magnet allows seamless integration with CMSG, DMSG, or EMSG sensors, and you can utilize LB foot, FA flange, SDB pivot, or TC trunnion mounts.
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 MI40X10SR FAQ
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod with an M12x1.25 male 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, the fixed TPU bumper pads only decelerate the piston near the stroke end; they do not act as an adjustable air cushion or a brake. If air is lost, the piston will drift, so an external rod lock or pilot check valve is required to hold a suspended load safely.
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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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