Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X5X120
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X5X120 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 5mm and 120mm give 4 controllable stop positions across a 125mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 15 mm
- Stroke 2120 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X5X120
The SCT50X5X120 multi-position cylinder delivers four fixed rod positions: 0 mm (fully retracted), 5 mm, 120 mm, and 125 mm (total travel). Each 50 mm bore piston section generates 982 N of push force at 0.5 MPa, rising to 1767 N at 0.9 MPa, making it suitable for short-precision and mid-stroke positioning tasks in a single compact unit.
This tie-rod design features a 20 mm diameter rod, PT1/4 ports, and a 21 mm adjustable air cushion on each section for controlled end-of-stroke deceleration. The body length A(SCT) is 243 mm. With TPU seals, it operates reliably from -20 to +70 °C on standard filtered air.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X5X120 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X5X120 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 5 / 120 mm |
| Total travel | 125 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) | 5 mm |
| P2 (section 2) | 120 mm |
| P3 (both extended) | 125 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 SCT50X5X120
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×5 | Stroke 1 (section 1) in mm. |
| ×120 | 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 SCT50X5X120 Is Used
Two-Stage Precision Feeding
Uses the 5 mm stroke for a precise low-force positioning or sensing step, then the 120 mm stroke advances the part into the main work zone.
Dual-Depth Sorting Gate
The 5 mm stop diverts thin components, the 120 mm stop handles thicker ones, and the full 125 mm position clears the gate completely for rejected parts.
Sequential Clamping
Applies a light 5 mm touch to align a workpiece, then a full 120 mm stroke to engage the main clamp with full force, all from one actuator.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X5X120 the Right Cylinder?
Select the SCT50X5X120 when an application needs a very short initial advance (5 mm) followed by a longer secondary stroke (120 mm), eliminating the complexity of two separate cylinders and their mounting hardware. If higher force is needed, stepping up to the 63 mm bore provides 1559 N push per section at 0.5 MPa. For a direct replacement, match the 50 mm bore, both 5 mm and 120 mm strokes, PT thread, and basic mounting style. When the 120 mm section is fully extended, ensure the rod is adequately guided if significant side loads are present.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 5 + 120 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 SCT50X5X120 FAQ
This tandem cylinder provides four discrete positions: 0 mm (home), 5 mm (first section extended), 120 mm (second section extended), and 125 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates two piston sections on a common rod, giving you four fixed positions from a single, pre-aligned unit. This saves space, reduces mounting brackets and port fittings, and eliminates the need to synchronize two separate cylinder strokes, simplifying your pneumatic circuit.
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