Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X80SR
The AirTAC Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X80SR is a genuine single acting, push (spring return) round-body mini air cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke80 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 MSI40X80SR
Delivering a robust 567.3 N of push force at 0.5 MPa (818.7 N at 0.7 MPa), this round-body stainless mini cylinder is built for heavy-duty ejection and clamping. The MSI40X80SR is a single-acting, spring-return PUSH type: compressed air extends the rod, while an internal spring retracts it. Because it needs only one air line, it saves on plumbing and returns to a safe retracted rest position automatically if air pressure drops.
The stainless-steel barrel and rod resist mild corrosion and washdown environments. A practical buyer insight: this bore yields a safe working load of about 340 N, or a vertical lift of roughly 28.9 kg with a 2:1 margin. It features a 1/4" port, an M12x1.25 male rod thread, a rear R cover with axial-in porting, and a built-in magnet for CMSG/DMSG/EMSG sensors. Note that Ø40 is a non-ISO-6432 size. Fixed TPU bumper pads soften the stroke end, but they do not lock a mid-stroke load.
Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X80SR Technical Specifications
| Model | Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X80SR |
|---|---|
| Series | MSI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 MSI40X80SR
| MSI | round-body mini cylinder (single-acting push, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 MSI40X80SR Is Used
Heavy-Duty Part Ejection
Use the 567.3 N push stroke to positively eject dense machined metal parts from a fixture, relying on the spring to retract safely when air is removed.
Pallet Stopping Gate
Deploy the rod as a heavy stop gate on a conveyor line; the robust 16 mm rod handles substantial impact while the spring retracts the gate to release flow.
Carton Clamping Arm
Apply the 340 N safe working load to hold packaging materials or cartons in place during a process cycle before the spring releases the clamp.
Is the Airtac MSI Single Acting Stainless Steel Mini Cylinder MSI40X80SR the Right Cylinder?
Sizing this unit requires comparing push forces. The Ø40 bore provides 567.3 N at 0.5 MPa; stepping down to a Ø32 yields 352.1 N, while no larger standard bore exists in this series. You must supply at least 0.2 MPa to overcome the return spring, or the rod will not extend. The 80 mm travel is the maximum standard stroke for this bore; longer travel is non-standard and made-to-order. Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion. The -S suffix indicates the piston magnet is present, enabling CMSG, DMSG, or EMSG switches.
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 MSI40X80SR FAQ
It provides a push force of 567.3 N at 0.5 MPa and 818.7 N at 0.7 MPa. You must supply at least 0.2 MPa to overcome the internal return spring; below that, the rod will not extend. When air is released, the spring drives the rod back to its retracted rest state.
This MSI variant uses compressed air only to extend the rod and a mechanical spring to retract it, requiring just one 1/4" air line. The -S suffix means it includes a magnet for CMSG/DMSG/EMSG sensors, and its stainless round-body construction resists mild corrosion.
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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