Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR is a genuine single acting, pull (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, pull (spring return)
- Rod threadM12×1.25
- CushionFixed TPU bumper pads
About the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR
Delivering a substantial 466.8 N of pull force at 0.5 MPa, this 40 mm bore round-body mini cylinder is built for robust tensioning and retraction tasks. The MTI40X80SR is a single-acting pull type: compressed air fed through the 1/4" port retracts the M12x1.25 rod, while an internal spring pushes it back out. Because the spring holds the rod extended at rest, the mechanism naturally fails safe to the forward position if air pressure drops.
The stainless steel barrel and rod resist mild corrosion and washdown environments. With an 80 mm stroke, this model hits the maximum standard travel limit for this bore size. For sizing purposes, its safe working load is roughly 280 N, and it can vertically pull or hold about 23.8 kg with a 2:1 safety margin. The included -S magnet supports CMSG, DMSG, and EMSG position sensing, while the R back cover provides an axial-in port orientation.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR |
|---|---|
| Series | MTI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Single acting, pull (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 | Pull force (spring return) |
|---|---|
| 0.5 MPa | 466.8 N |
| 0.7 MPa | 677.9 N |
Single-acting pull: the spring extends the rod; air retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR
| MTI | round-body mini cylinder (single-acting pull, 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 MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR Is Used
Heavy-Duty Hold-Down
Keeps a 23.8 kg workpiece clamped during machining, using the spring to maintain the extended hold-down position even if the factory air supply fails.
Normally-Closed Gate
Acts as a heavy conveyor diverter gate that stays securely blocked by the spring at rest, requiring 466.8 N of pneumatic pull to open the path.
Web Tensioning
Maintains constant tension on a thick material web, pulling the idler roller back against the material with 677.9 N of force at 0.7 MPa.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR the Right Cylinder?
When sizing by pull force, this 466.8 N (at 0.5 MPa) bore sits at the top of the MTI range; stepping down to a 32 mm bore yields 295.6 N. You must supply at least 0.2 MPa of air to overcome the return spring and retract the rod. Since 80 mm is the longest standard stroke available for this 40 mm bore, any longer travel requirement would need a custom solution. Mounting options include LB foot, FA flange, SDB pivot-block, and TC trunnion brackets to fit your layout.
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 MTI Single Acting Stainless Steel Mini Cylinder MTI40X80SR FAQ
It provides a pull force of 466.8 N at 0.5 MPa and 677.9 N at 0.7 MPa. It requires a minimum of 0.2 MPa to overcome the internal spring. Because it is a single-acting pull cylinder, the spring keeps the rod extended at rest, meaning it fails safe to the extended position on air loss.
Yes, the -S suffix indicates a built-in piston magnet, making it compatible with CMSG, DMSG, and EMSG reed or electronic switches. Deceleration is handled by fixed TPU bumper pads at the stroke ends; it does not feature adjustable air cushioning.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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