Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X350S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X350S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 300mm and 350mm give 4 controllable stop positions across a 650mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1300 mm
- Stroke 2350 mm
- Total travel650 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X350S
The SCT63X300X350S provides four fixed rod positions for sequencing or diverting tasks without complex servo controls. With a 300 mm first stroke, a 350 mm second stroke, and a full 650 mm combined travel, the rod can stop precisely at 0, 300, 350, and 650 mm by pressurising the two piston sections independently or together.
Each 63 mm bore section delivers 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum 0.9 MPa operating pressure. The built-in magnet (denoted by the -S suffix) allows direct clamping of CMSG or DMSG sensors to the tie-rod barrel for non-contact position feedback. The 20 mm diameter piston rod and 28 mm air cushion at each end provide smooth deceleration across the 30-800 mm/s speed range.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X350S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X350S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 300 / 350 mm |
| Total travel | 650 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) | 300 mm |
| P2 (section 2) | 350 mm |
| P3 (both extended) | 650 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 SCT63X300X350S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×300 | Stroke 1 (section 1) in mm. |
| ×350 | 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 SCT63X300X350S Is Used
3-Way Part Sorting
Use the four discrete stop positions to direct parts into three separate chutes or conveyors from a single feed point, with the fully retracted position serving as the home or loading station.
Multi-Depth Pressing
Achieve two distinct pressing depths (300 mm and 650 mm) in one cycle for assembly operations that require a partial insertion followed by a full-depth press, all from a single actuator.
Dual-Stop Transfer
Index a workpiece carrier along a rail to two separate workstations spaced 300 mm and 350 mm apart, with the 650 mm total stroke used for a rapid return or a third, more distant station.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X300X350S the Right Cylinder?
This four-position tandem unit replaces setups that would otherwise need two separate cylinders and external hard stops, simplifying the machine frame and pneumatic circuit. When selecting, note the 63 mm bore provides 1559 N of push per section at 0.5 MPa; if your application needs higher force, stepping up to the 80 mm bore (SCT80 series) offers 2513 N per section at the same pressure. For a direct replacement, match the 63 mm bore, both the 300 mm and 350 mm strokes, the PT port thread, the basic mounting configuration, and the integrated magnet (-S). With a 300 mm section stroke, ensure the guided load is aligned to prevent side-loading and rod bending, particularly when the rod is fully extended to the 650 mm total travel.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 300 + 350 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 SCT63X300X350S FAQ
It provides four distinct mechanical stop positions: 0 mm (fully retracted), 300 mm (first section extended), 350 mm (second section extended), and 650 mm (both sections extended for total travel). The positions are fixed by the two stroke lengths and are selected by pressurising the cylinder's two air ports independently or simultaneously.
Yes, it is a direct functional replacement for two SC63 cylinders used to achieve three or four fixed positions. The SCT63X300X350S combines both strokes on a single common rod line, reducing mounting hardware and eliminating the need to synchronise two separate actuators. Ensure the replacement matches the 63 mm bore, 300 mm and 350 mm strokes, PT ports, and the -S magnet option for sensor compatibility.
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