Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 135mm and 15mm give 4 controllable stop positions across a 150mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1135 mm
- Stroke 215 mm
- Total travel150 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15
The SCT80X135X15 is a tandem multi-position pneumatic cylinder that delivers four distinct rod positions from a single actuator: fully retracted (0 mm), the short stroke extended (15 mm), the long stroke extended (135 mm), and both strokes extended for full travel (150 mm). Each 80 mm bore piston section generates 2513 N of push force at 0.5 MPa, and the 25 mm diameter rod with PT3/8 ports handles sequencing tasks where a compact, two-stroke solution replaces multiple cylinders.
With a 28 mm adjustable air cushion on each end and a body length A of 296 mm, this cylinder decelerates loads smoothly at each stop. Operating on filtered air from 0.15 to 1.0 MPa, the push force climbs to 4523 N per section at 0.9 MPa. The standard TPU seals suit ambient temperatures from -20 to +70 °C, making it a reliable choice for general industrial multi-stop actuation.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 135 / 15 mm |
| Total travel | 150 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke / section | Up to 500 mm standard |
Specifications follow the official AirTAC SCT (multi-position) datasheet. SCT is available in bores 32–100; each of the two sections has a 500 mm max standard stroke (800 mm max). Confirm against the product label before installation. Thread options: PT (standard) / G.
Stop Positions (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 135 mm |
| P2 (section 2) | 15 mm |
| P3 (both extended) | 150 mm |
Positions are set by pressurising section 1, section 2, or both. With equal strokes you get 3 distinct positions; with unequal strokes you get 4.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Force is per actuated piston section (single-piston, same as the SC bore): push uses the full bore area, pull subtracts the rod area. Size with a safety margin.
Model Code: Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×135 | Stroke 1 (section 1) in mm. |
| ×15 | Stroke 2 (section 2) in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCD (double rod), SCJ (adjustable stroke). SCT mounting: Basic, FA, FB, CA, CB, LB. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15 Is Used
Two-Stage Sorting Gate
Use the 15 mm stroke to nudge a part into a weigh station and the 135 mm stroke to divert it fully onto a reject lane, achieving two sorting actions from one cylinder.
Dual-Depth Clamping Fixture
The 15 mm position applies a light preliminary clamp for alignment, while the 135 mm position delivers the full clamping stroke, protecting delicate assemblies from initial over-force.
Sequential Pusher in Assembly
Advance 15 mm to separate a component from a stack, then extend the remaining 135 mm to press it into a housing, combining two discrete feed motions in a single tandem unit.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15 the Right Cylinder?
Select the SCT80X135X15 when your process needs four fixed stop positions without the complexity of two independent cylinders and external hard stops. The 15 mm stroke section works well for a precise short advance, while the 135 mm section handles the main transfer. If your force requirement is lower, stepping down to the 63 mm bore reduces per-section push force to 1559 N at 0.5 MPa; for higher thrust, the 100 mm bore provides 3927 N. This model is a direct replacement for an existing AirTAC SCT80X135X15 with basic mounting, PT ports, and no magnet. For strokes over 300 mm, consider external guides to protect the 25 mm rod from side loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 135 + 15 mm suit your layout?
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Plumb the two sections to the correct valves for each stop.
- check Adjust end cushion screws for smooth stops.
- check Use SCT mounting accessory (FA / FB / CA / CB / LB).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X135X15 FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 15 mm (stroke 2 only), 135 mm (stroke 1 only), and 150 mm (both strokes extended). Select a position by pressurizing the appropriate combination of the two cylinder sections.
No, the SCT cylinder does not lock or hold its position when air pressure is exhausted or lost; the piston will drift. If you need to hold a load at an intermediate stop without live pressure, you must add an external rod brake, a mechanical lock, or pilot-operated check valves in the circuit.
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