
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X100S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 100mm give 4 controllable stop positions across a 180mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
The SCT63X80X100S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions: 0 mm (fully retracted), 80 mm, 100 mm, and 180 mm (total travel). Each piston section provides a push force of 1559 N at 0.5 MPa, making it suitable for applications requiring distinct intermediate stops without complex servo controls. The built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors for precise position feedback.
This 63 mm bore cylinder uses a 20 mm diameter rod and PT1/4 ports. The body length A(SCT) is 249 mm, and the adjustable air cushion at each end is 28 mm long, providing smooth deceleration. At the maximum operating pressure of 0.9 MPa, the thrust per section reaches 2805 N. The standard TPU seals offer an operating temperature range of -20 to +70 °C.
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X100S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 80 / 100 mm |
| Total travel | 180 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, 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.
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 80 mm |
| P2 (section 2) | 100 mm |
| P3 (both extended) | 180 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.
| 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.
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×100 | 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.
Actuates a diverter gate to four distinct positions for routing packages or components onto different conveyor lanes, using the 0, 80, 100, and 180 mm stops.
Provides a two-stage pressing sequence where the first section extends to 80 mm for a pre-load, and the second section advances to the 180 mm total stroke for full insertion.
Indexes a workpiece through four stations on an assembly fixture, with sensor confirmation at each position via the integrated magnet and reed switches.
This SCT model is ideal when a machine needs to index a load to four specific locations, replacing the complexity of two separate cylinders with external hard stops. The 80 mm and 100 mm strokes create two distinct intermediate positions, plus the fully retracted and fully extended states. If higher force is needed, consider stepping up to the 80 mm bore SCT80 series, which provides 2513 N of push per section at 0.5 MPa. For a lower force requirement, the 50 mm bore version delivers 982 N.
To ensure a direct replacement, match the 63 mm bore, both the 80 mm and 100 mm strokes, the PT port thread, and the built-in magnet (-S suffix). This basic mounting model has no attached brackets, so verify your machine's existing mounting interface. Since the total travel is 180 mm, ensure the rod is adequately guided if side loads are present to prevent bending.
Multi-position checklist
This cylinder provides 4 discrete mechanical stops: 0 mm (retracted), 80 mm (stroke 1), 100 mm (stroke 2), and 180 mm (both strokes extended). The positions are fixed by the two internal piston sections and are not infinitely variable.
Each of the two piston sections independently generates 1559 N of push force and 1402 N of pull force when operated at 0.5 MPa. The force does not double when both sections are pressurized simultaneously for a multi-position move.
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