Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X310S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X310S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 310mm give 4 controllable stop positions across a 385mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 175 mm
- Stroke 2310 mm
- Total travel385 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X310S
The SCT63X75X310S is a tie-rod multi-position cylinder that delivers four fixed rod positions from a single compact assembly: fully retracted (0 mm), 75 mm, 310 mm, and the combined total travel of 385 mm. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa, making it suitable for diverting or sorting tasks that require two distinct extended stops without the complexity of two separate actuators.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the barrel for reliable end-of-stroke or mid-stroke position sensing. The 20 mm diameter piston rod and 28 mm adjustable air cushion at each end manage deceleration effectively, while the PT1/4 ports keep plumbing straightforward. The body length A(SCT) is 249 mm, providing a known envelope for machine layout.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X310S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X310S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 75 / 310 mm |
| Total travel | 385 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) | 75 mm |
| P2 (section 2) | 310 mm |
| P3 (both extended) | 385 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 SCT63X75X310S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×310 | 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 SCT63X75X310S Is Used
Two-Stage Diverter Gate
Uses the 75 mm stop for a partial divert position and the 310 mm stop for a full divert, routing packages to three separate lanes from one feed point.
Dual-Depth Press Feed
Advances a pressing tool to a light-contact position at 75 mm for alignment, then drives to the full 310 mm depth for the forming stroke, all with sensor confirmation at each stop.
Multi-Stop Part Transfer
Shifts a workpiece carrier to a 75 mm inspection station and a 310 mm load/unload station along a linear rail, using the built-in magnet for position verification at both points.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X310S the Right Cylinder?
Choose the SCT63X75X310S when your process needs a 4-position sequence with a short 75 mm advance and a longer 310 mm second step. If the 1559 N push per section at 0.5 MPa is more than required, stepping down to a 50 mm bore (982 N push at 0.5 MPa) can reduce air consumption and physical size. For replacement, match the 63 mm bore, both strokes (75 mm and 310 mm), PT thread, basic mounting, and the -S magnet option; the replacement must be another AirTAC SCT of the same configuration. With the 310 mm section stroke, ensure the rod is guided if the load applies significant side force or if the extended length risks buckling.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 310 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 SCT63X75X310S FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm (first section extended), 310 mm (second section extended), and 385 mm (both sections extended, which is the total travel).
Yes, if your sequence requires exactly the 75 mm and 310 mm stops. The SCT combines both strokes on one rod line, eliminating the need to synchronize two separate cylinders and their mounting brackets, which saves space and simplifies the pneumatic circuit.
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