Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X250X250
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X250X250 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 250mm and 250mm give 3 controllable stop positions across a 500mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1250 mm
- Stroke 2250 mm
- Total travel500 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X250X250
The SCT63X250X250 is a double-acting multi-position cylinder that provides three fixed rod positions: fully retracted (0 mm), mid-stroke (250 mm), and full extension (500 mm). Each 63 mm bore piston section generates 1559 N of push force at 0.5 MPa, making it suitable for sorting gates or two-stage clamping fixtures where intermediate and full-travel stops are needed.
Built on a rugged tie-rod design with a 20 mm diameter rod and M16x1.5 rod thread, this tandem unit uses PT1/4 ports and incorporates a 28 mm adjustable air cushion in each section. The body length A(SCT) is 249 mm, providing a compact envelope for a 500 mm total travel system.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X250X250 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X250X250 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 250 / 250 mm |
| Total travel | 500 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 250 mm |
| P2 (both extended) | 500 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 SCT63X250X250
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×250 | 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 SCT63X250X250 Is Used
3-Way Diverter Gate
Operates a chute or gate with a home, mid-divert, and full-divert position, routing packages to three separate conveyor lanes.
Two-Stage Clamping
Applies an initial low-force clamp at 250 mm extension for part alignment, then drives to full 500 mm travel for high-force holding.
Multi-Depth Pressing
Provides two distinct pressing depths in a single cycle, such as a pre-crush at 250 mm and a final compaction at the full 500 mm stroke.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X250X250 the Right Cylinder?
Choose the SCT63X250X250 when your process needs a defined mid-point stop at 250 mm and a full stop at 500 mm without external hard stops or switches. For lighter loads, stepping down to a 50 mm bore reduces per-section push to 982 N at 0.5 MPa, while moving up to an 80 mm bore increases it to 2513 N. A direct replacement must match the 63 mm bore, both 250 mm strokes, PT port thread, and basic mounting configuration.
With a 250 mm stroke per section, ensure the rod is guided if significant side loads are present to prevent bending and premature seal wear.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 250 + 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 SCT63X250X250 FAQ
It provides 3 distinct rod positions because both strokes are equal (250 mm). The positions are 0 mm (fully retracted), 250 mm (first section extended), and 500 mm (both sections extended).
Yes, if your application requires a fixed mid-stop and full-stop position. The SCT replaces two cylinders and their mounting hardware with a single tandem unit, simplifying plumbing and control. Ensure the replacement matches the 63 mm bore, 250 mm strokes, and PT port thread.
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Standard models usually ship in 3-4 days.
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