Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X20S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X20S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 20mm give 4 controllable stop positions across a 100mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 180 mm
- Stroke 220 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X20S
The SCT63X80X20S creates four fixed rod positions—0 mm, 20 mm, 80 mm, and the combined 100 mm total travel—by controlling two tandem piston sections independently. This 63 mm bore unit provides 1559 N of push force per section at 0.5 MPa, rising to 2805 N at 0.9 MPa, making it a robust choice for multi-step clamping or sorting tasks.
A built-in magnet (-S suffix) allows CMSG, DMSG, or EMSG sensors to mount directly on the 20 mm rod’s tie-rod barrel for end-of-stroke or intermediate position confirmation. The cylinder body has a 249 mm base length and uses PT1/4 ports with a 28 mm adjustable air cushion on each section to decelerate the load smoothly.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X20S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X20S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 80 / 20 mm |
| Total travel | 100 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) | 80 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 100 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 SCT63X80X20S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×80 | 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 SCT63X80X20S Is Used
Two-Way Part Diverting
Uses the 20 mm and 80 mm stops to shift a diverter gate to two separate conveyor lanes, with full retraction clearing the line entirely.
Dual-Depth Pressing
Provides a light touch at the 20 mm position for pre-forming and a full 80 mm stroke for final insertion, all within a single actuator footprint.
Multi-Stop Feeding
Advances material in precise 20 mm and 80 mm increments, then retracts fully, simplifying the mechanics of a step-feeding station.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X20S the Right Cylinder?
Choose this four-position SCT when a process needs two distinct forward stops (20 mm and 80 mm) plus full retraction and full extension, all from one compact tandem assembly. If the 1559 N push at 0.5 MPa is insufficient, stepping up to the 80 mm bore provides 2513 N per section. For replacement, match the 63 mm bore, both the 80 mm and 20 mm strokes, PT1/4 thread, and the -S magnet option; the basic mounting style requires no additional brackets. With a combined stroke reaching 100 mm, rod bending is generally not a concern, but ensure the load is guided if off-axis moments are present.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 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 SCT63X80X20S FAQ
It provides four discrete positions: fully retracted (0 mm), the first section extended (20 mm), the second section extended (80 mm), and both sections extended for the total travel (100 mm).
Yes, in applications requiring two fixed forward positions. It replaces a pair of individually mounted cylinders with a single tandem body, reducing plumbing and mounting hardware. Ensure the replacement matches the 63 mm bore, 80 mm and 20 mm strokes, PT ports, and the -S magnet sensor option.
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