Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 170mm give 4 controllable stop positions across a 250mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 180 mm
- Stroke 2170 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170
The SCT50X80X170 tandem cylinder provides four fixed rod positions—0 mm, 80 mm, 170 mm, and the full 250 mm travel—by pressurising one or both 50 mm bore sections. Each piston section delivers 982 N of push force at 0.5 MPa (1767 N at the maximum operating pressure of 0.9 MPa), making it a capable actuator for multi-stop material handling. The 20 mm diameter rod and 21 mm adjustable air cushion at each end ensure reliable deceleration.
With a body length A(SCT) of 243 mm plus the 250 mm total stroke, this tie-rod design fits into spaces where two separate cylinders and external stops would be bulkier. The PT1/4 ports and standard TPU seals suit filtered air systems operating from -20 to +70 °C. This model is a basic configuration without a magnet or mounting bracket, ready for direct integration.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 80 / 170 mm |
| Total travel | 250 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 21 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) | 80 mm |
| P2 (section 2) | 170 mm |
| P3 (both extended) | 250 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×170 | 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170 Is Used
Multi-Lane Diverter Gate
Actuates a gate to three discrete positions for sorting packages onto separate conveyor lines, using the 0 mm, 80 mm, and 250 mm stops.
Two-Depth Insertion
Pushes components to a shallow 80 mm depth for one assembly step and a deeper 170 mm depth for another, all from a single compact cylinder.
Staged Clamping Fixture
Provides a 0 mm release, an 80 mm pre-clamp, and a 250 mm full-clamp position for securing different part sizes on a machining centre.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170 the Right Cylinder?
Choose the SCT50X80X170 when your process requires a compact actuator with four distinct stop points, such as routing parts to three different conveyor lanes. The tandem layout eliminates the need to synchronise two independent cylinders, reducing plumbing and control complexity. If a higher force per section is needed, stepping up to the 63 mm bore SCT63 provides 1559 N of push at 0.5 MPa. For a direct replacement, match the 50 mm bore, both the 80 mm and 170 mm strokes, and the PT port thread. Since the total travel exceeds 300 mm, ensure the rod is externally guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 170 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X170 FAQ
This tandem cylinder provides four discrete positions: 0 mm (fully retracted), 80 mm (first section extended), 170 mm (second section extended), and 250 mm (both sections extended for total travel). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
No, the SCT cylinder does not mechanically lock at any position. If air pressure is exhausted or a directional valve is centred, the piston can drift. To hold a load securely at a mid-stroke position without live pressure, you must add an external rod brake or a pilot-operated check valve in the circuit.
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