Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15CM
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15CM is a genuine single acting, pull (spring return) round-body mini air cylinder with a Ø40mm bore and 15mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke15 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 MTI40X15CM
Delivering a substantial 466.8 N of pull force at 0.5 MPa, this AirTAC round-body mini cylinder is built for heavy-duty tensioning and retraction tasks. The MTI40X15CM is a single-acting, spring-return pull type: compressed air retracts the rod via its 1/4" port, while an internal spring pushes it back out. Because the spring extends the rod at rest, the cylinder fails safe to the extended position if air pressure drops. This makes it highly reliable for normally-forward stops or hold-downs that must stay engaged without a continuous air supply.
The stainless-steel barrel and Ø16 piston rod resist mild corrosion and washdown environments. It requires at least 0.2 MPa of input pressure to overcome the return spring and begin the pull stroke. For sizing, this bore yields a safe working load of roughly 280 N, or a vertical lift capacity of about 23.8 kg when applying a 2:1 safety margin. This specific SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG sensors. The rear CM round cover provides a clean back-end profile for direct mounting.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15CM Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15CM |
|---|---|
| Series | MTI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 MTI40X15CM
| MTI | round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 MTI40X15CM Is Used
Heavy-Duty Hold-Down
Uses its 466.8 N pull force to retract and clamp parts, while the internal spring keeps the hold-down engaged during an air loss event.
Normally-Closed Gate
Spring-extends to keep a heavy access gate shut by default, requiring 0.2 MPa of air pressure to pull the gate open.
Tensioning Station
Maintains robust belt tension through its extended rest state, pulling back to release tension only when the system is pressurized.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15CM the Right Cylinder?
When sizing by pull force, this Ø40 bore generates 466.8 N at 0.5 MPa and 677.9 N at 0.7 MPa. If you need less force, the next size down is the Ø32 bore, which provides 295.6 N at 0.5 MPa; since Ø40 is the largest available MTI bore, there is no larger standard option for higher loads. You must supply at least 0.2 MPa to retract the rod against the spring. The 15 mm stroke sits well within the 80 mm standard travel limit for this bore. If you need position feedback, select the -S magnet variant to enable CMSG, DMSG or EMSG switches, and utilize LB, FA, SDB or TC mounts for your physical interface.
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 MTI40X15CM 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 spring and retract. The rod is normally extended at rest and uses fixed TPU bumper pads to soften the stroke end.
This specific SKU does not include a magnet, so it cannot host CMSG, DMSG or EMSG switches. You would need the -S variant for position sensing. It is a single-acting pull cylinder, not double-acting, and features a stainless steel round body.
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