Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X75
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X75 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 70mm and 75mm give 4 controllable stop positions across a 145mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 170 mm
- Stroke 275 mm
- Total travel145 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X75
The SCT50X70X75 tandem cylinder delivers four fixed rod positions—0 mm, 70 mm, 75 mm, and the full 145 mm extension—by selectively pressurising its two piston sections. Each section generates approximately 982 N of push force at 0.5 MPa, making it suitable for light sorting or diverting tasks where two different intermediate stops are needed without external hard stops.
Built on a rugged tie-rod design with a 20 mm diameter rod and M16x1.5 rod thread, the unit uses PT1/4 ports and features a 21 mm adjustable air cushion in each section. The body length A(SCT) is 243 mm, providing a compact footprint for a multi-stop actuator in this bore class.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X75 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X75 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 70 / 75 mm |
| Total travel | 145 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) | 70 mm |
| P2 (section 2) | 75 mm |
| P3 (both extended) | 145 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 SCT50X70X75
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×70 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT50X70X75 Is Used
Two-Stage Diverter Gate
Positions at 70 mm and 75 mm allow a blade or paddle to direct product flow to two different chutes from a single conveyor line, with the 145 mm position providing a third bypass route.
Dual-Depth Pressing
Use the 70 mm stop for a pre-compression step and the 75 mm stop for final forming, ensuring consistent part density in compacting or assembly fixtures.
Multi-Stop Feeding
Advance a workpiece carrier to 70 mm for a drilling station, then to 75 mm for a tapping head, with full retraction at 0 mm and a 145 mm clearance position for maintenance.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X75 the Right Cylinder?
Choose the SCT50X70X75 when your process requires two distinct mid-stroke positions that differ, eliminating the complexity of two separate cylinders and external brackets. If higher force is needed, stepping up to the 63 mm bore provides about 1559 N push per section at 0.5 MPa. For a direct replacement, match the 50 mm bore, both strokes (70 mm and 75 mm), PT port thread, and basic mounting style. If a section stroke exceeds 300 mm, consider adding external guides to manage side loads and protect the rod bearing.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 70 + 75 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 SCT50X70X75 FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 70 mm (section one extended), 75 mm (section two extended), and 145 mm (both sections extended). These are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, in applications needing two different intermediate positions. The SCT50X70X75 integrates both strokes on one rod line, saving space and simplifying plumbing. Ensure the replacement matches the 50 mm bore, 70 mm and 75 mm strokes, PT ports, and basic mounting.
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