Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X250S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X250S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 150mm and 250mm give 4 controllable stop positions across a 400mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1150 mm
- Stroke 2250 mm
- Total travel400 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X250S
The SCT63X150X250S is a double-acting multi-position cylinder that delivers four fixed rod positions from two piston sections on a single axis. With strokes of 150 mm and 250 mm, the reachable stops are 0 mm (fully retracted), 150 mm, 250 mm, and the total travel of 400 mm when both sections are pressurized. Each section generates 1559 N of push force at 0.5 MPa, making it suitable for sorting gates and multi-depth pressing tasks.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be mounted directly on the tie-rod barrel for end-of-stroke or intermediate position confirmation. The 63 mm bore uses a 20 mm diameter piston rod with an M16x1.5 thread and PT1/4 ports. The adjustable air cushion at each end has a 28 mm length, and the body length A(SCT) is 249 mm, providing a compact tandem solution for sequenced linear moves.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X250S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X250S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 150 / 250 mm |
| Total travel | 400 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.
Stop Positions (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 150 mm |
| P2 (section 2) | 250 mm |
| P3 (both extended) | 400 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 SCT63X150X250S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×150 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT63X150X250S Is Used
Four-Way Part Diverting
Uses the four discrete positions (0, 150, 250, 400 mm) to direct parts down four separate conveyor lanes. The built-in magnet allows sensors to verify the gate position at each stop, ensuring reliable sorting.
Multi-Depth Insertion
Provides two distinct push depths (150 mm and 250 mm) plus a 400 mm total travel for part ejection. The 1559 N per-section force at 0.5 MPa handles press-fit or assembly tasks requiring varied insertion strokes.
Sequential Clamping Station
Applies a 150 mm initial clamp stroke followed by a 250 mm secondary advance for two-stage workholding. The 20 mm rod and 28 mm cushion length ensure stable, repeatable positioning for machining fixtures.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X250S the Right Cylinder?
Choose the SCT63X150X250S when a single actuator must provide four discrete stopping points without the complexity of two independent cylinders and external hard stops. This tandem unit simplifies plumbing and control logic for diverting or two-depth insertion operations. If higher force is needed, stepping up to the 80 mm bore SCT80 series provides 2513 N of push per section at 0.5 MPa. For a lighter load, the 50 mm bore SCT50 series offers 982 N per section.
A direct replacement must match the 63 mm bore, both 150 mm and 250 mm strokes, PT port threads, and the built-in magnet for sensor compatibility. The basic mounting configuration accepts standard SCT accessories like FA/FB flanges or CA/CB clevises. Because the combined stroke reaches 400 mm, ensure the rod is adequately guided if significant side loads are present to prevent bending or premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 150 + 250 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 SCT63X150X250S FAQ
This tandem cylinder provides four distinct rod positions: 0 mm (fully retracted), 150 mm (section one extended), 250 mm (section two extended), and 400 mm (both sections extended). The stops are discrete and fixed by the two stroke lengths.
Yes. The 'S' suffix indicates a built-in magnet along the barrel. This allows CMSG reed switches or DMSG/EMSG solid-state sensors to be mounted directly on the tie-rods to detect any of the four piston positions.
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