Airtac MI25~40 Stainless Steel Mini Cylinder MI40X450SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X450SCM is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 450mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke450 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 MI40X450SCM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial actuation tasks across a 450 mm stroke. The Ø40 bore operates via a 1/4" port and features a CM round end rear cover. Its riveted stainless barrel and Ø16 rod shrug off mild corrosion, outlasting painted alternatives in damp or washdown settings. Fixed TPU bumper pads absorb the impact at stroke extremes without offering adjustable cushioning.
For real-world sizing, plan for a safe working load of roughly 377 N, which is about 60 percent of the 0.5 MPa rating. In vertical lift setups, this translates to hoisting approximately 32 kg with a two-to-one safety margin. Because this SKU includes the -S magnet, it is fully primed for CMSG, DMSG, or EMSG position switches.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X450SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X450SCM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 450 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 MI40X450SCM
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | 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 MI40X450SCM Is Used
Package Diverting
Pushes heavy cartons across sorting lanes with 628.3 N of thrust, utilizing the 450 mm stroke to clear wide conveyor belts efficiently.
Pallet Handling
Actuates large pallet stops and lifting pins in distribution hubs, where the stainless build resists moisture from outdoor docking areas.
Woodworking Ejection
Ejects dense MDF panels from CNC routing tables, relying on the fixed TPU bumpers to decelerate the massive 32 kg loads at stroke end.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X450SCM the Right Cylinder?
When sizing this 628.3 N unit, dropping down to a Ø32 bore reduces the 0.5 MPa push force to 402.2 N, while no larger MI bore exists above Ø40. The 450 mm stroke is well within the 500 mm standard maximum for this bore, though such a long extension demands careful side-load management to prevent rod bending. This CM cover configuration and standard mounts like LB foot or TC trunnion provide flexible installation.
Remember that a basic double-acting cylinder drifts when air pressure is lost or the valve is centered, as the TPU pads only soften the end-of-stroke impact rather than locking the piston. To suspend a load safely during a pressure drop, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 MI40X450SCM FAQ
This double-acting cylinder features a 1/4" port and an M12x1.25 male rod thread. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The -S suffix means a magnet is built in, allowing you to mount CMSG, DMSG, or EMSG switches for detection. It uses fixed TPU bumper pads to decelerate the stroke end; it does not have adjustable air cushioning. For adjustable cushions, look at the MIC variant.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MI25~40 Stainless Steel Mini Cylinder MI40X450SCM
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.