Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 75mm give 3 controllable stop positions across a 150mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 175 mm
- Stroke 275 mm
- Total travel150 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75
The SCT63X75X75 is a tie-rod, double-acting tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), 75 mm, and the combined 150 mm total travel. Each 63 mm bore piston section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa, making it suitable for repetitive two-step positioning tasks.
Built with a 20 mm diameter piston rod and PT1/4 ports, this cylinder uses an adjustable air cushion at each end to decelerate the load smoothly. The body length A(SCT) is 249 mm, and the cushion length is 28 mm. It operates on filtered air within a standard temperature range of -20 to +70 °C using durable TPU seals.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 75 / 75 mm |
| Total travel | 150 mm |
| Stop positions | 3 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, 28 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 75 mm |
| P2 (both extended) | 150 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCT63X75X75
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×75 | 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 SCT63X75X75 Is Used
Two-Way Diverter Gate
Actuates a flap on a conveyor to sort packages into two separate lanes. The first 75 mm stroke directs items left, while the full 150 mm stroke sends them right, with a reliable return to the center-retracted position.
Two-Depth Pressing
Provides a two-stage pressing operation where a tool first advances 75 mm for a pre-forming step, then extends to the full 150 mm for final compaction, ensuring consistent depth control without needing two actuators.
Multi-Stop Part Transfer
Shifts a workpiece between three stations on an assembly line. The cylinder moves from a home position to a first process point at 75 mm, then to a second process point at 150 mm, simplifying the fixture design.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75 the Right Cylinder?
Choose the SCT63X75X75 when your application requires a compact, all-in-one unit to move a load to two distinct extended positions without the complexity of two separate cylinders and external hard stops. If the 1559 N push force per section at 0.5 MPa is insufficient, stepping up to an 80 mm bore provides 2513 N per section; if it is excessive, a 50 mm bore offers 982 N.
For a direct replacement, match the 63 mm bore, both 75 mm section strokes, PT port thread, and basic mounting configuration. If your current unit has a magnet for sensors, ensure the replacement code includes the -S suffix.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 75 + 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 SCT63X75X75 FAQ
It provides three distinct mechanical stop positions because both section strokes are equal at 75 mm. The rod positions are 0 mm (fully retracted), 75 mm (first section extended), and 150 mm (both sections extended for total travel).
Yes, it is designed as a direct replacement for two independent cylinders in a tandem setup, provided they share the same 63 mm bore and 75 mm stroke. You must match the port thread (PT), and if the original used sensors, you will need the -S magnet option on the new SCT unit.
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