Airtac MI25~40 Stainless Steel Mini Cylinder MI40X150SCM
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X150SCM is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 150mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke150 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 MI40X150SCM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles heavy-duty automation tasks. The Ø40 mm bore operates on a 1/4" port and features a Ø16 mm piston rod with an M12x1.25 male thread. Its riveted stainless construction resists mild corrosion and washdown environments better than painted alternatives. Fixed TPU bumper pads absorb stroke-end impact across the 150 mm travel.
For practical sizing, plan for roughly 377 N of usable work at 0.5 MPa, which safely lifts about 32 kg vertically with a 2:1 margin. The built-in piston magnet supports CMSG, DMSG and EMSG position switches. The rear CM round cover provides a clean, compact mounting footprint for tight machinery layouts.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X150SCM Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X150SCM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MI40X150SCM
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MI40X150SCM Is Used
Stamping Press Feed
Pushes heavy metal blanks into a forming press using 628.3 N of thrust at 0.5 MPa, withstanding oily environments via its stainless steel barrel.
Pallet Diverter
Actuates a heavy lane diverter on a packaging conveyor, using the 150 mm stroke to reroute loaded pallets reliably.
Vertical Lift Gate
Raises an industrial access gate weighing 30 kg, safely within the 32 kg vertical lift capacity calculated at a 2:1 safety margin.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X150SCM the Right Cylinder?
When sizing this 40 mm bore, stepping down to a Ø32 model drops the 0.5 MPa push force to 402.2 N, while no larger AirTAC MI exists above Ø40. If your application demands variable end-cushioning for high-speed loads, consider the MIC series instead of the fixed TPU bumpers found here. The 150 mm stroke is well within the 500 mm maximum, keeping rod bending stress low. Remember that a standard cylinder drifts when air is lost or a valve centers; the bumpers only decelerate the stroke end and will not hold a load. Use an external rod lock or pilot check valve for vertical position holding.
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 MI40X150SCM FAQ
This double-acting cylinder delivers 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. It uses a 1/4" air port and operates at speeds of 30-800 mm/s.
Yes, the -S suffix indicates a built-in piston magnet compatible with CMSG, DMSG and EMSG reed or electronic switches. The CM designation specifies a round rear end cover, providing a compact, axial mounting interface for tight machine spaces.
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.
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