Airtac MI25~40 Stainless Steel Mini Cylinder MI40X100SUTC
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X100SUTC is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 100mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke100 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 MI40X100SUTC
Delivering 628.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles heavy-duty actuation where smaller bores stall. The 1/4" pneumatic port and M12x1.25 male rod thread equip it for high-flow, robust linkage. Its riveted stainless barrel and rod shrug off mild corrosion, outlasting painted alternatives in damp or washdown settings. Fixed TPU bumper pads absorb stroke-end impact without requiring adjustment.
For practical sizing, plan for around 377 N of real work at 0.5 MPa, which safely lifts about 32 kg vertically on a 2:1 margin. The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing, while the U rear cover and TC trunnion mounting allow flexible 90-degree pivot integration.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X100SUTC Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X100SUTC |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 MI40X100SUTC
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 MI40X100SUTC 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 stainless build to resist cutting fluid splash.
Pallet Diverter Arm
Swings via the TC trunnion mount to reroute heavy pallets on a packaging line, with the U rear cover accommodating tight 90-degree port routing.
Vertical Gate Actuation
Lifts a 30 kg access gate using the 0.5 MPa pressure rating, requiring an external pilot check valve to prevent gravity drift when air is removed.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X100SUTC the Right Cylinder?
This 40 mm bore sits at the top of the MI range, so if 628.3 N at 0.5 MPa is excessive, step down to the 32 mm bore (402.2 N push). There is no larger standard MI bore. The TC trunnion and U back cover suit pivoting loads, but verify your side-load geometry over the 100 mm stroke to avoid bending the 16 mm rod. Remember that the TPU bumpers only decelerate the stroke end; they do not function as a lock. If gravity or air loss risks dropping the load, install an external rod lock or pilot check valve, as the piston will drift when valve pressure is centred.
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 MI40X100SUTC FAQ
The 1/4" port feeds a 40 mm bore that generates 628.3 N push and 527.8 N pull at 0.5 MPa, or 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 to both. It uses fixed TPU bumper pads that passively decelerate the stroke end, not adjustable air cushions. Furthermore, a standard cylinder drifts when air is lost or the valve is centred; you must add an external rod lock or pilot check valve to hold a suspended load.
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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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