Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15R
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15R 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 MTI40X15R
Delivering a robust 466.8 N of pull force at 0.5 MPa, this AirTAC round-body mini cylinder is built for demanding tension and retraction tasks. The MTI40X15R is a single-acting, spring-return pull type: compressed air retracts the rod via its 1/4" port, while an internal spring extends it. Because it rests extended, the rod stays out during an air loss to maintain a fail-safe forward stop. The stainless steel barrel and Ø16 rod shrug off mild corrosion and washdown environments.
This non-magnetic SKU lacks the -S option and therefore cannot accept CMSG, DMSG or EMSG sensors. Fixed TPU bumper pads soften the stroke ends, though they do not lock a mid-stroke load. For sizing, 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.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15R Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15R |
|---|---|
| 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 MTI40X15R
| 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 MTI40X15R Is Used
Fail-Safe Hold-Down
Keeps a heavy workpiece clamped by spring force, using its 466.8 N pull only to release the part when air is applied.
Normally-Closed Gate
Secures a 40 mm bore barrier in the blocking position at rest, retracting the 15 mm stroke to allow passage on command.
Heavy Tensioning
Pulls tension belts or levers with a safe working load near 280 N, relying on the internal spring to maintain baseline tension.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X15R the Right Cylinder?
Size this 40 mm bore by its net pull capability: it yields 466.8 N at 0.5 MPa and 677.9 N at 0.7 MPa. If your application requires less force, the next size down (Ø32) provides 295.6 N at 0.5 MPa; as the largest in the series, Ø40 has no larger standard bore. You must supply at least 0.2 MPa of air to overcome the return spring and retract the rod.
The 15 mm stroke sits well within the 80 mm spring-limited standard for this bore. Mounting is handled via the R axial-in rear cover, along with LB foot, FA flange, SDB pivot-block or TC trunnion options. Remember that a base MTI unit without the -S magnet cannot support position sensing.
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 MTI40X15R 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 an M12x1.25 male rod thread.
No, this specific SKU does not include a magnet, so it cannot support CMSG, DMSG or EMSG switches. You would need the -S variant for sensing. It is also a single-acting spring-return unit, not a double-acting cylinder.
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