Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X120X210S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X120X210S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 120mm and 210mm give 4 controllable stop positions across a 330mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 1120 mm
- Stroke 2210 mm
- Total travel330 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X120X210S
The AirTAC SCT50X120X210S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops from two piston sections on a common 20 mm rod. With strokes of 120 mm and 210 mm, the reachable positions are 0 mm (fully retracted), 120 mm, 210 mm, and the total travel of 330 mm when both sections are pressurised. Each 50 mm bore section generates 982 N of push force at 0.5 MPa, rising to 1767 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing at any of the four stops. The cylinder body has a length A(SCT) of 243 mm and features an adjustable pneumatic cushion of 21 mm at each end to decelerate the load smoothly. PT1/4 port threads and an M16x1.5 rod thread are standard.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X120X210S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X120X210S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 120 / 210 mm |
| Total travel | 330 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) | 120 mm |
| P2 (section 2) | 210 mm |
| P3 (both extended) | 330 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 SCT50X120X210S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×120 | Stroke 1 (section 1) in mm. |
| ×210 | 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 SCT50X120X210S Is Used
Two-Stage Part Diverting
Uses the 120 mm and 210 mm stops to route parts to three separate outfeed lanes from a single infeed conveyor, controlled by two valves.
Multi-Depth Press Insertion
Presses a component to a 120 mm partial depth for pre-assembly, then extends to the full 330 mm for final seating, with a 210 mm intermediate inspection position.
Sequential Clamping Station
Clamps a workpiece at 210 mm for a first operation, retracts to 120 mm to allow part rotation, then fully retracts for unloading.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X120X210S the Right Cylinder?
Choose the SCT50X120X210S when a single actuator must index a load to four fixed positions without the complexity of two separate cylinders and a coupling. The 120 mm and 210 mm strokes provide a compact sequence for a two-step feed-and-place operation. If your force requirement is lower, stepping down to the 40 mm bore (628 N push at 0.5 MPa) reduces air consumption and weight; for higher force, the 63 mm bore delivers 1559 N push per section at the same pressure. For replacement, match the 50 mm bore, both the 120 mm and 210 mm strokes, PT port thread, basic mounting, and the -S magnet suffix exactly. With the longer 210 mm section stroke, ensure the rod is adequately guided if side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 120 + 210 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 SCT50X120X210S FAQ
This tandem cylinder provides four discrete positions: 0 mm (fully retracted), 120 mm, 210 mm, and the combined total travel of 330 mm. These are fixed by the two piston section strokes and are selected by pressurising section one, section two, or both simultaneously.
Yes, it can replace a setup with two separate 50 mm bore SC cylinders of 120 mm and 210 mm stroke that were mechanically coupled. The replacement must match the 50 mm bore, both strokes, PT1/4 ports, and the -S magnet option for sensor compatibility.
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