Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X15S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X15S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 15mm give 4 controllable stop positions across a 45mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 130 mm
- Stroke 215 mm
- Total travel45 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X15S
The SCT80X30X15S is an 80 mm bore, double-acting multi-position cylinder that provides four fixed rod positions by combining two piston sections on a common rod line. The reachable stops are 0 mm (fully retracted), 15 mm, 30 mm, and the total extended travel of 45 mm when both sections are pressurized. Each actuated section generates a push force of 2513 N at 0.5 MPa, allowing the cylinder to handle substantial mid-stroke loads without needing external hard stops.
This model includes a built-in magnet, enabling direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position confirmation at any of the four stops. The 25 mm diameter rod and 28 mm adjustable air cushion at each end cap help manage kinetic energy, even in the short 15 mm and 30 mm section strokes. Its body length A(SCT) is 296 mm, providing a compact tandem assembly for space-constrained multi-stop tasks.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X15S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X15S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 30 / 15 mm |
| Total travel | 45 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) | 30 mm |
| P2 (section 2) | 15 mm |
| P3 (both extended) | 45 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 SCT80X30X15S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×30 | 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 SCT80X30X15S Is Used
Two-Stage Diverter Gate
Operates a conveyor diverter with four precise positions: home (0 mm), first divert angle (15 mm), second divert angle (30 mm), and a full bypass position (45 mm), all controlled by sequencing pressure to the two cylinder sections.
Multi-Level Part Staging
Positions a staging platform at three distinct heights plus a retracted home position for a pick-and-place sequence, using the 15 mm, 30 mm, and 45 mm stops to align parts with different feed heights.
Short-Stroke Pressing & Gauging
Provides two pressing depths (15 mm and 30 mm) and a full 45 mm retract stroke for a gauging station, with the 2513 N per-section push force at 0.5 MPa delivering consistent pressure for component testing.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X30X15S the Right Cylinder?
Select the SCT80X30X15S when your application requires an 80 mm bore actuator to index between four discrete positions without the complexity of two separate cylinders and a mounting bracket. This tandem unit saves alignment time and reduces the overall footprint compared to back-to-back standard cylinders. If your force requirement is lower, stepping down to a 63 mm bore reduces the per-section push force to about 1559 N at 0.5 MPa. For replacement, ensure the alternative matches the 80 mm bore, both the 30 mm and 15 mm strokes, the PT port thread, the basic mounting style, and the integrated magnet for sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 30 + 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 SCT80X30X15S FAQ
This cylinder has four discrete stop positions: 0 mm (fully retracted), 15 mm (first section extended), 30 mm (second section extended), and 45 mm (both sections extended). The positions are fixed by the two section strokes and are not infinitely adjustable.
Yes, it is a direct replacement for two separate cylinders used in a tandem configuration to achieve four positions, provided the individual strokes were 30 mm and 15 mm. You must match the 80 mm bore, PT ports, basic mounting, and the integrated magnet. The SCT unit simplifies plumbing and alignment into a single, compact assembly.
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