Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X120S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X120S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 35mm and 120mm give 4 controllable stop positions across a 155mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 135 mm
- Stroke 2120 mm
- Total travel155 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X120S
The SCT32X35X120S is a double-acting multi-position cylinder that delivers four fixed rod positions—0 mm, 35 mm, 120 mm, and the full 155 mm total travel—by pressurizing its two piston sections independently or together. Each section provides a push force of 402 N at 0.5 MPa, making it suitable for light sorting or diverting tasks where multiple end-points are needed from a single compact unit.
This model includes a built-in magnet for direct mounting of CMSG, DMSG, or EMSG sensors, enabling precise position feedback at every stop. It features a 12 mm diameter rod, M10x1.25 rod thread, PT1/8 ports, and a 21 mm adjustable air cushion on each section to manage end-of-stroke impact. The tie-rod body has a base length of 233 mm, keeping the assembly rigid in multi-stop applications.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X120S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X120S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 35 / 120 mm |
| Total travel | 155 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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) | 35 mm |
| P2 (section 2) | 120 mm |
| P3 (both extended) | 155 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCT32X35X120S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×35 | 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 SCT32X35X120S Is Used
Two-Stage Part Diverting
Uses the 35 mm and 120 mm stops to route parts to three different conveyor lanes from a single pick point, simplifying line design.
Offset Pick-and-Place
The unequal strokes allow a gripper to reach a pick position at 35 mm and two distinct place locations at 120 mm and 155 mm.
Multi-Depth Press Feeding
Advances material to a press in two controlled steps (35 mm then 120 mm) for progressive stamping or forming operations.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X35X120S the Right Cylinder?
Choose the SCT32X35X120S when your process requires four discrete stopping points without the complexity of servo controls or multiple individual cylinders. The unequal strokes create a non-symmetrical position set ideal for two-step feeding or offset placement. If higher force is needed, stepping up to the 40 mm bore provides 628 N of push per section at the same 0.5 MPa pressure.
For drop-in replacement, match the 32 mm bore, both the 35 mm and 120 mm section strokes, PT port thread, and the built-in magnet (-S suffix). This cylinder uses basic mounting; if a pivoting mount is required, consider an SCT32X35X120S with a CA or CB clevis. With the longer 120 mm stroke section, ensure the rod is adequately guided if significant side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 35 + 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 SCT32X35X120S FAQ
It provides four discrete mechanical stops: fully retracted (0 mm), first section extended (35 mm), second section extended (120 mm), and both sections extended for the total travel of 155 mm.
Yes, in applications requiring two fixed intermediate positions. It combines two piston sections on one rod line, saving space and eliminating the need to synchronize two separate cylinders. Ensure the replacement matches the 32 mm bore, 35 mm and 120 mm strokes, PT ports, and the -S magnet option.
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