Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR is a genuine single acting, push (spring return) 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 typeSingle acting, push (spring return)
- 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 MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR
Generating a substantial 567.3 N of push force at 0.5 MPa (818.7 N at 0.7 MPa), this round-body stainless-steel mini cylinder is built for heavy-duty compact actuation. As a single-acting PUSH type, compressed air extends the rod while an internal spring handles the return. This means you only need one 1/4" air line, saving on plumbing and ensuring the rod safely retracts to its rest state if air pressure drops below the 0.2 MPa minimum required to overcome the spring. The Ø16 mm piston rod features an M12x1.25 male thread.
The stainless barrel and rod resist mild corrosion and washdown environments. Because the listed force is already net of the return spring, you can confidently apply it to your load calculations; for example, it handles a safe working load of about 340 N (roughly 60% of the 0.5 MPa figure) or lifts up to 28.9 kg vertically with a 2:1 safety margin. The -S suffix denotes a built-in piston magnet for position sensing, and the R back cover provides a convenient axial-in port orientation. Fixed TPU bumper pads soften the stroke endpoints.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR |
|---|---|
| Series | MSI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 10 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 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 (spring return) |
|---|---|
| 0.5 MPa | 567.3 N |
| 0.7 MPa | 818.7 N |
Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR
| MSI | round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 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 MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR Is Used
Heavy-Duty Part Ejection
Leveraging the 567.3 N push force at 0.5 MPa, this cylinder reliably ejects dense machined metal components from a press bed, with the spring ensuring it retracts clear of the workspace on air release.
Pallet Stop Gate
Acts as a robust pin-stop on a conveyor line, extending to halt heavy pallets up to 28.9 kg, then safely dropping the gate via spring return when the line needs to advance.
High-Force Clamping
Ideal for securing heavy workpieces during milling or drilling, providing a constant 340 N safe working clamping force while requiring only a single 1/4" pneumatic valve port to operate.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR the Right Cylinder?
When sizing this 40 mm bore model, compare its 567.3 N push force at 0.5 MPa against the next size down: the Ø32 bore delivers 352.1 N, making the Ø40 the right choice when you need to exceed 350 N of extension thrust. There is no larger standard MSI bore, so for loads beyond 567.3 N you would need a different cylinder family. Remember that the internal return spring requires at least 0.2 MPa of supply pressure to extend the rod. The 10 mm stroke is well within the 80 mm standard spring limit for this bore. Pair the built-in magnet with CMSG, DMSG, or EMSG sensors for switching, and utilize LB, FA, SDB, or TC mountings to fit your machine.
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 0.2 – 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 MSI Single Acting Stainless Steel Mini Cylinder MSI40X10SR FAQ
It provides a push force of 567.3 N at 0.5 MPa and 818.7 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring and extend the rod. Upon air loss, the spring automatically retracts the rod to its rest position. It does not provide pneumatic pull force.
Yes, the -S suffix indicates a built-in piston magnet, allowing you to mount CMSG, DMSG, or EMSG reed or electronic sensors directly to the body. The R back cover configuration provides an axial-in port orientation at the rear, which helps streamline 1/4" pneumatic plumbing in tight spaces.
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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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