Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X30SR
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X30SR is a genuine single acting, pull (spring return) round-body mini air cylinder with a Ø40mm bore and 30mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke30 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 MTI40X30SR
Delivering a robust 466.8 N of pull force at 0.5 MPa, this 40 mm round-body mini cylinder uses compressed air to retract the rod while an internal spring pushes it back out. The MTI40X30SR rests in the extended position, meaning a normally-closed gate or hold-down stays safely engaged if air pressure drops. Because it is single-acting, you only need one 1/4" air line to operate it, saving piping and valve costs.
Built with a stainless-steel barrel and a Ø16 mm piston rod, it handles mild washdown environments without corroding. The -S suffix adds a piston magnet for position sensing using CMSG, DMSG or EMSG switches. Factoring a 2:1 safety margin, this bore pulls or holds about 23.8 kg vertically, making it a heavy-duty choice within the non-ISO 40 mm mini cylinder class. Fixed TPU bumpers soften the end-of-stroke impact.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X30SR Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X30SR |
|---|---|
| Series | MTI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 MTI40X30SR
| MTI | round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 MTI40X30SR Is Used
Heavy Hold-Down Clamps
Keeps thick materials pressed against a fixture during machining. The spring holds the clamp down safely even if the air supply fails.
Tensioning Systems
Maintains constant pulling tension on belts or webbing. Air retracts the rod to release the tension when a changeover is needed.
Normally-Closed Blast Gates
Holds heavy dust-collection gates shut by default. The 466.8 N pull force retracts the rod to open the gate only when airflow is required.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X30SR the Right Cylinder?
When sizing by pull force, this 40 mm bore provides 466.8 N at 0.5 MPa. If your load requires less force, stepping down to the Ø32 bore yields 295.6 N; as this is the largest standard mini size, there is no larger bore to step up to. You must supply at least 0.2 MPa of air to overcome the internal spring and retract the rod.
The 30 mm stroke sits well within the 80 mm spring-limited maximum for this bore. The R back cover provides an axial port orientation for neat rear routing. Because this SKU includes the -S magnet, you can mount sensors directly, whereas a non-S variant cannot accept them.
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 MTI40X30SR FAQ
It is a single-acting pull cylinder that rests extended. It needs at least 0.2 MPa to retract the rod. The pneumatic pull force is 466.8 N at 0.5 MPa and 677.9 N at 0.7 MPa. It produces no pneumatic push force.
Yes. The -S suffix means it has a built-in piston magnet, allowing you to mount CMSG, DMSG or EMSG switches for position detection. A model without the -S suffix cannot accept sensors.
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