Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80U
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80U 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 MTI40X80U
Delivering a substantial 466.8 N of pull force at 0.5 MPa, this AirTAC round-body mini cylinder handles heavy-duty tensioning and retraction tasks. The stainless-steel barrel and piston rod provide reliable mild corrosion and washdown resistance without relying on a tie-rod or profile construction. Because it is a single-acting pull type, an internal spring drives the rod to the extended position at rest, while compressed air entering the 1/4" port retracts it.
This fail-safe extend behavior keeps hold-downs and gates engaged if air pressure drops. The spring-only extension means the fixed TPU bumper pads soften the stroke end but do not lock a mid-stroke load. For sizing, the 466.8 N pull at 0.5 MPa yields a safe working load of about 280 N, or roughly 23.8 kg of vertical pull with a 2:1 safety margin. This non-magnetic SKU cannot take a sensor; adding the -S option enables CMSG, DMSG, or EMSG switches.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80U Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80U |
|---|---|
| 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 MTI40X80U
| 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 MTI40X80U Is Used
Heavy Hold-Down Clamps
Uses the 466.8 N pull to retract heavy workpiece clamps, while the spring-extend design ensures the clamp stays engaged if shop air is lost.
Safety Gate Retractors
Pulls a 40 mm bore safety gate open on command, with the internal spring automatically closing and holding the barrier extended during an air failure.
Tensioning Diverter Arms
Provides 280 N of safe working load to pull and maintain belt diverter tension, relying on the 1/4" port air supply to release the force.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X80U the Right Cylinder?
When sizing by pull force, this 40 mm bore provides 466.8 N at 0.5 MPa and 677.9 N at 0.7 MPa. If your load requires less force, the next size down (32 mm) offers 295.6 N at 0.5 MPa, making the 40 mm ideal for applications needing roughly 280 N of safe working load. There is no larger standard MTI bore.
Remember that at least 0.2 MPa of air pressure is required to overcome the return spring and retract the rod. This 80 mm stroke represents the maximum standard spring-limited travel for this bore. The U back cover provides a 90-degree port orientation for tight installations. Because this specific SKU lacks the -S magnet, it cannot accept position sensors.
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 MTI40X80U FAQ
It is a single-acting pull cylinder that rests extended. It requires at least 0.2 MPa to overcome the spring and retract. The net pull force is 466.8 N at 0.5 MPa and 677.9 N at 0.7 MPa. It uses a 1/4" port and a 16 mm rod.
No, this specific SKU does not have a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors. You must select the -S variant for sensing capabilities. It is also a single-acting spring-return cylinder, not double-acting.
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