Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI32X15SR
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI32X15SR is a genuine single acting, pull (spring return) round-body mini air cylinder with a Ø32mm bore and 15mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ32 mm
- Stroke15 mm
- Port size1/4"
- Acting typeSingle acting, pull (spring return)
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
About the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI32X15SR
Delivering a robust 295.6 N pull force at 0.5 MPa, this AirTAC round-body mini cylinder uses compressed air to retract the rod while an internal spring pushes it back out. Because the spring holds the rod extended at rest, the mechanism naturally fails safe with the rod forward if air pressure drops. This makes it highly reliable for hold-down and gating tasks that must stay engaged. The stainless-steel barrel and piston rod provide mild corrosion resistance for washdown environments.
Equipped with a 1/4" port and an M10x1.25 male rod thread, the unit requires at least 0.2 MPa of input pressure to overcome the return spring and initiate the pull stroke. For design sizing, a safe working load is roughly 177 N, and it can vertically pull or hold about 15 kg with a 2:1 safety margin. The -S suffix denotes a built-in piston magnet, allowing seamless integration with CMSG, DMSG, or EMSG reed and electronic sensors.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI32X15SR Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI32X15SR |
|---|---|
| Series | MTI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 15 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/4" |
| Rod thread | M10×1.25 |
| 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 Ø32 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø32mm)
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 295.6 N |
| 0.7 MPa | 388.8 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 MTI32X15SR
| MTI | round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 32 | 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 MTI32X15SR Is Used
Tensioning Mechanisms
Maintains steady pulling tension on belts or web materials, automatically snapping back to the extended forward stop when air pressure is removed.
Fail-Safe Hold-Down Clamps
Keeps heavy workpieces clamped during machining, using the 295.6 N pull force to retract and holding the part securely via spring extension if air fails.
Normally-Closed Safety Gates
Holds physical barrier gates shut by default with the rod extended, requiring 0.2 MPa of air to pull the gate open for forklift passage.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI32X15SR the Right Cylinder?
When sizing by pull force, this 32 mm bore generates 295.6 N at 0.5 MPa and 388.8 N at 0.7 MPa. If your application requires less holding power, stepping down to the 25 mm bore yields 151.1 N at 0.5 MPa. Since no larger standard MTI bore exists above 32 mm, heavy-duty applications must be split across multiple cylinders. Always factor in the 0.2 MPa minimum pressure required to beat the internal spring and retract the rod.
This 15 mm stroke sits well within the 80 mm standard travel limit for this bore size. The R back cover provides an axial-in port orientation for streamlined plumbing. To mount the cylinder, utilize LB foot, FA flange, SDB pivot-block, or TC trunnion hardware. The integrated magnet (-S) is mandatory for switch sensing; a standard SKU without the S suffix cannot accept a sensor.
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 MTI32X15SR FAQ
It provides a pneumatic pull force of 295.6 N at 0.5 MPa and 388.8 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal spring and retract the rod. The cylinder is normally extended at rest, meaning the spring keeps the rod out even with zero air pressure.
No, the fixed TPU bumper pads only soften the stroke ends and cannot lock a mid-stroke load; on air loss the spring drives the rod to the fully extended position. The -S suffix indicates a built-in magnet, enabling the use of CMSG, DMSG, or EMSG sensors for end-of-stroke detection.
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