Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X20U
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X20U is a genuine single acting, pull (spring return) round-body mini air cylinder with a Ø8mm bore and 20mm stroke, M5×0.8 air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ8 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeSingle acting, pull (spring return)
- Rod threadM4×0.7
- CushionFixed TPU bumper pads
About the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X20U
Generating 12.3 N of pull force at 0.5 MPa, this stainless-steel 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 MTI8X20U provides a fail-safe forward position that stays engaged even if air pressure drops completely. It requires at least 0.2 MPa of air to overcome the spring and begin the pull stroke.
Built to ISO 6432 mounting interface standards, the 8 mm bore drops directly into standard mini brackets and uses an M5x0.8 port with an M4x0.7 male rod thread. The riveted stainless barrel and rod resist mild corrosion and washdown environments. For practical sizing, expect a safe working load of about 7 N, or roughly 0.6 kg of vertical pull with a 2:1 safety margin. This specific SKU lacks a magnet and cannot host position sensors; adding an -S variant enables CMSG, DMSG, or EMSG switches.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X20U Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X20U |
|---|---|
| Series | MTI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 20 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 150 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
Theoretical Output Force (Ø8mm)
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 12.3 N |
| 0.7 MPa | 19.9 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 MTI8X20U
| MTI | ISO 6432 round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 8 | Bore size in mm. |
| ×20 | 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 MTI8X20U Is Used
Fail-Safe Gate Stop
Keeps a lightweight access gate closed by default. The spring holds the rod extended to block the opening, and 12.3 N of air pull retracts the pin only when the system is cycled.
Lightweight Hold-Down
Maintains tension on a small part during a secondary process. If air is lost, the spring stays extended to keep the part clamped, safely pulling away only when 0.2 MPa is applied.
Micro Tensioning Arm
Applies a steady 7 N safe working load on a delicate film or wire. The single air line saves space and energy by only actuating the pull stroke.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X20U the Right Cylinder?
Size this actuator strictly by its net pull output: the 8 mm bore offers 12.3 N at 0.5 MPa, and there is no smaller option in the range. If your application requires more retraction force, step up to the 10 mm bore, which provides 23.2 N at 0.5 MPa. Remember that the internal spring limits standard travel to 50 mm for this bore size.
The U-style back cover provides a 90-degree port orientation for tight spaces. Because this base model has no magnet, it cannot accept CMSG, DMSG, or EMSG sensors. Fixed TPU bumper pads soften the stroke ends, but they do not lock the load; the spring simply returns the rod to the extended rest position on air loss.
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 MTI8X20U FAQ
It delivers 12.3 N of pull force at 0.5 MPa and 19.9 N at 0.7 MPa. The rod rests in the extended position via an internal spring and requires at least 0.2 MPa of air pressure to overcome the spring and retract.
This is a single-acting, spring-return pull cylinder, not double-acting. This specific SKU does not have a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors; you must select the -S variant for position sensing.
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