Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X50SU
The AirTAC Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X50SU is a genuine single acting, pull (spring return) round-body mini air cylinder with a Ø8mm bore and 50mm 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
- Stroke50 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 MTI8X50SU
Generating a 12.3 N pull force at 0.5 MPa (19.9 N at 0.7 MPa), this AirTAC stainless-steel mini cylinder uses compressed air through its M5x0.8 port to retract a 4 mm rod, while an internal spring extends it. The MTI8X50SU rests in the extended position, meaning a normally-closed gate or hold-down stays safely engaged if air pressure drops. It requires at least 0.2 MPa of input pressure to overcome the return spring.
Built with a riveted round-body barrel and a U 90-degree rear cover, it drops into standard ISO 6432 mini-cylinder brackets. The -S suffix adds a piston magnet for CMSG, DMSG or EMSG sensors. For this bore, a practical safe working load is about 7 N, or roughly 0.6 kg of vertical pull with a 2:1 safety margin. Fixed TPU bumpers soften the stroke ends, though they do not lock the load mid-travel.
Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X50SU Technical Specifications
| Model | Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X50SU |
|---|---|
| Series | MTI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 50 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 MTI8X50SU
| MTI | ISO 6432 round-body mini cylinder (single-acting pull, spring-return). |
|---|---|
| 8 | Bore size in mm. |
| ×50 | 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 MTI8X50SU Is Used
Fail-Safe Hold-Down
Keeps a light 7 N clamping force on a thin film or foil layer, staying engaged automatically if the compressed air supply fails.
Normally-Closed Gate
Blocks a 4 mm recess on a small parts track; the 12.3 N pull retracts the pin only when a signal is sent to the M5x0.8 port.
Light Tensioning
Maintains steady tension on a delicate fiber strand, using the spring to pull the 0.6 kgf load taut at rest.
Is the Airtac MTI Single Acting Stainless Steel Mini Cylinder MTI8X50SU the Right Cylinder?
Size strictly by pneumatic pull force: this Ø8 bore yields 12.3 N at 0.5 MPa. If your mechanism needs less force, note there is no smaller MTI bore; if you need more, step up to the Ø10 bore which provides 23.2 N at 0.5 MPa. Remember the spring limits standard single-acting travel to 50 mm for this size, which this 50 mm stroke hits exactly.
Because the spring constantly pushes outward, the cylinder needs at least 0.2 MPa to retract. The fail-safe extend behavior means it drives outward on air loss rather than holding position. Match your mounting using the U cover or standard ISO 6432 brackets, and use CMSG/DMSG/EMSG switches with this -S magnet model.
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 MTI8X50SU FAQ
It delivers a 12.3 N pull at 0.5 MPa and 19.9 N at 0.7 MPa. It needs at least 0.2 MPa to overcome the spring. The cylinder is single-acting pull type, so the spring holds the rod extended at rest.
Yes, the -S suffix means it has a piston magnet for CMSG, DMSG or EMSG switches. Deceleration is handled by fixed TPU bumper pads, not an adjustable air cushion.
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