Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 120mm give 4 controllable stop positions across a 160mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 140 mm
- Stroke 2120 mm
- Total travel160 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120
The SCT50X40X120 is a double-acting multi-position cylinder that provides four fixed rod positions: 0 mm (fully retracted), 40 mm, 120 mm, and 160 mm (total travel). Each 50 mm bore section generates 982 N of push force at 0.5 MPa, making it suitable for diverting or sorting tasks requiring two distinct extended stops without complex servo controls.
This tie-rod design uses a 20 mm diameter rod and PT1/4 ports, with a 21 mm adjustable air cushion at each end for smooth deceleration. The body length A(SCT) is 243 mm, providing a compact footprint for a cylinder with 160 mm of total stroke. At the maximum operating pressure of 0.9 MPa, the thrust per section reaches 1767 N.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 40 / 120 mm |
| Total travel | 160 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) | 40 mm |
| P2 (section 2) | 120 mm |
| P3 (both extended) | 160 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 SCT50X40X120
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×40 | 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 SCT50X40X120 Is Used
Two-Stage Part Diverting
Extend to 40 mm for a primary divert path or 120 mm for a secondary lane on a conveyor, giving three routing options from one actuator.
Multi-Depth Pressing
Use the 40 mm stop for a pre-press or light insertion and the full 160 mm travel for a deep-seating operation, all within one machine cycle.
Dual-Position Clamping
Clamp thin workpieces at the 120 mm rod position and thicker ones at the 40 mm position, eliminating manual fixture changeovers between batches.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120 the Right Cylinder?
Choose the SCT when your application needs two different extension lengths from a single pneumatic circuit, avoiding the cost and synchronization issues of two separate cylinders. For higher force requirements, consider stepping up to the 63 mm bore SCT, which provides 1559 N of push per section at 0.5 MPa. A direct replacement must match the 50 mm bore, both the 40 mm and 120 mm section strokes, PT port thread, and basic mounting configuration.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 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 SCT50X40X120 FAQ
It provides four distinct mechanical stops: 0 mm (fully retracted), 40 mm, 120 mm, and the total travel of 160 mm. You select the position by pressurizing section one, section two, or both simultaneously.
Yes, if your process requires fixed strokes of 40 mm and 120 mm. The SCT50X40X120 consolidates both motions onto a single rod line, reducing mounting hardware and eliminating the need to sequence two separate valves. Ensure the replacement matches the PT1/4 port thread and basic mounting.
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Related AirTAC SCT Multi-Position Cylinders
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