Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X150U
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X150U is a genuine single acting, pull (spring return) round-body mini air cylinder with a Ø40mm bore and 150mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke150 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 MTI40X150U
Delivering a robust 466.8 N of pull force at 0.5 MPa, this AirTAC round-body mini cylinder is engineered for heavy-duty tensioning and retraction tasks. As a single-acting PULL type, it uses compressed air fed through its 1/4" port to draw the 16 mm rod back, while an internal spring pushes it out. This means the rod stays extended at rest, providing a fail-safe forward position if air pressure drops. Because this specific SKU lacks the -S magnet option, it cannot accept CMSG, DMSG, or EMSG sensors.
The stainless-steel barrel and rod offer reliable mild corrosion and washdown resistance. A practical buyer insight: this bore yields a safe working load of roughly 280 N, or a vertical pull capacity of about 23.8 kg with a 2:1 safety margin. Note that the 150 mm stroke exceeds the 80 mm standard spring limit, making this a non-standard, made-to-order configuration. It relies on fixed TPU bumper pads to soften stroke ends, not an adjustable air cushion.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X150U Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X150U |
|---|---|
| Series | MTI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MTI40X150U
| MTI | round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MTI40X150U Is Used
Fail-Safe Hold-Down Clamp
Keeps a heavy workpiece clamped in the extended rest state, automatically releasing only when 1/4" air pressure pulls the rod back.
Tensioning Mechanism
Maintains constant belt or cable tension via the internal spring, using the 466.8 N pneumatic pull to slacken the line on demand.
Normally-Closed Heavy Gate
Holds a 40 mm bore industrial gate shut by default; air retracts the rod to open it, ensuring the gate closes securely during air loss.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI40X150U the Right Cylinder?
Size strictly by pull force. If 466.8 N at 0.5 MPa is excessive, step down to the Ø32 bore, which provides 295.6 N; as this is the largest MTI size, no larger standard option exists. Remember that the spring requires at least 0.2 MPa of input pressure to overcome before retraction begins. The U back cover provides a 90-degree mounting and port orientation for tight layouts. Given the 150 mm stroke, expect a made-to-order part, as single-acting springs are typically limited to 80 mm at this bore. Use LB, FA, SDB, or TC mounts to fit your framework.
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 MTI40X150U FAQ
It provides a 466.8 N pull at 0.5 MPa and 677.9 N at 0.7 MPa. The rod is normally extended at rest via spring pressure. It requires a minimum of 0.2 MPa to overcome the spring and retract.
No, this specific SKU does not have a magnet. You must select an -S variant to use CMSG, DMSG, or EMSG sensors. It is also a single-acting pull cylinder, not double-acting.
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