Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X20
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X20 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 20mm give 4 controllable stop positions across a 100mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 180 mm
- Stroke 220 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X20
The SCT50X80X20 is a tandem multi-position cylinder that provides four distinct, repeatable rod positions: 0 mm (fully retracted), 80 mm, 20 mm, and 100 mm (total travel). Each of its two 50 mm bore sections delivers 982 N of push force and 825 N of pull force when operated at 0.5 MPa, making it suitable for applications requiring a compact unit with a short and a mid-range stop.
This genuine AirTAC cylinder features a 20 mm diameter rod and PT1/4 ports. The adjustable air cushion at each end, with a 21 mm cushion length, ensures smooth deceleration. The tie-rod body has an overall length A of 243 mm, providing a robust yet serviceable design for industrial automation tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X20 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X20 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 80 / 20 mm |
| Total travel | 100 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) | 20 mm |
| P3 (both extended) | 100 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 SCT50X80X20
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT50X80X20 Is Used
Two-Stage Sorting Gate
Uses the 80 mm and 20 mm positions to divert parts to two different conveyor lanes from a single feed point, simplifying the actuator count.
Dual-Depth Clamping Fixture
Provides a 20 mm initial clamp and an 80 mm full-travel position for processing two different part thicknesses on the same fixture.
Multi-Step Press Operation
Delivers a 20 mm pre-press and an 80 mm main press stroke, enabling a two-stage forming or assembly sequence with one cylinder.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X80X20 the Right Cylinder?
Select the SCT50X80X20 when your process needs a 100 mm total stroke split into two unequal, fixed positions without the complexity of two separate cylinders and external stops. If higher force is required, consider stepping up to the 63 mm bore SCT63 series, which provides 1559 N of push per section at the same 0.5 MPa pressure. For a direct replacement, match the 50 mm bore, both the 80 mm and 20 mm strokes, PT port thread, and the basic mounting configuration. If your application involves a longer stroke section, ensure the rod is adequately guided to prevent side-load deflection.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 20 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 SCT50X80X20 FAQ
It provides 4 discrete positions. The rod can be commanded to stop at 0 mm (retracted), 80 mm (section 1 extended), 20 mm (section 2 extended), and 100 mm (both sections extended for full travel).
Yes, if your sequence requires a 20 mm and an 80 mm stroke from the same rod axis. The SCT integrates both strokes into one tie-rod body, reducing mounting hardware and eliminating the need to synchronize two separate cylinders. Ensure the port thread (PT) and mounting style match your machine.
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