Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X20
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X20 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 20mm give 4 controllable stop positions across a 70mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 150 mm
- Stroke 220 mm
- Total travel70 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X20
The SCT63X50X20 is a 63 mm bore tandem cylinder that delivers four fixed rod positions—0 mm, 50 mm, 20 mm, and the combined 70 mm total travel—by pressurising one or both piston sections. Each section independently provides 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum 0.9 MPa operating pressure, giving precise thrust for multi-stop tasks.
Built on a rigid tie-rod construction with a 20 mm diameter rod and M16x1.5 rod thread, the cylinder includes a 28 mm adjustable air cushion in each section for controlled deceleration. Its PT1/4 ports and 249 mm body length A(SCT) make it a compact solution for sequencing operations where a standard single-stroke cylinder would require external stops.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X20 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X20 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 50 / 20 mm |
| Total travel | 70 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) | 50 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 70 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 SCT63X50X20
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT63X50X20 Is Used
Two-Stage Diverter Gate
Use the four positions to direct product flow to three separate lanes: fully retracted (0 mm) for lane one, first section extended (50 mm) for lane two, second section extended (20 mm) for lane three, or both extended (70 mm) for a bypass.
Multi-Depth Insertion
Drive a tool to two different insertion depths in sequence. The 50 mm stroke handles the primary insertion, while the 20 mm stroke provides a secondary, shallower depth for a different component on the same assembly line.
Sequential Clamping Station
Apply a 1559 N initial clamp at 50 mm extension, then a lighter secondary clamp at 20 mm for a fragile part. The discrete stops ensure repeatable clamping forces without over-travel.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X20 the Right Cylinder?
Choose the SCT63X50X20 when your process needs four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. If the 1559 N push force per section at 0.5 MPa is insufficient, stepping up to an 80 mm bore provides 2513 N push per section. For a direct replacement, match the 63 mm bore, both 50 mm and 20 mm strokes, PT port thread, and basic mounting configuration. With a 50 mm section stroke, rod bending is not a primary concern, but ensure the load is guided if off-centre forces are present.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 20 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 SCT63X50X20 FAQ
The four discrete rod positions are 0 mm (fully retracted), 50 mm (first section extended), 20 mm (second section extended), and 70 mm (both sections extended, which is the total travel). You select the position by applying air pressure to the corresponding piston section.
Yes, if your application requires strokes of 50 mm and 20 mm from the same rod axis. The SCT tandem cylinder provides these two strokes in a single, compact body, eliminating the need to synchronise two separate cylinders and their mountings. Ensure the replacement matches the PT1/4 ports and basic mounting.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCT Multi-Position Cylinders
Request a Quote for Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.