Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X100X75
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X100X75 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 75mm give 4 controllable stop positions across a 175mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1100 mm
- Stroke 275 mm
- Total travel175 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X100X75
The SCT63X100X75 tandem cylinder provides four fixed rod positions—fully retracted (0 mm), 100 mm, 75 mm, and the combined 175 mm total travel—by pressurising its two piston sections independently or together. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa (2805 N at 0.9 MPa), driven through a 20 mm diameter piston rod with M16x1.5 threads.
This double-acting multi-position design uses PT1/4 ports and an adjustable air cushion with a 28 mm cushion length to manage end-of-stroke deceleration. The tie-rod construction houses TPU seals for a standard operating range of -20 to +70 °C, making it a reliable choice for sequencing tasks that need four distinct mechanical stops without external hard stops or multiple single-stroke cylinders.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X100X75 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X100X75 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 100 / 75 mm |
| Total travel | 175 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) | 100 mm |
| P2 (section 2) | 75 mm |
| P3 (both extended) | 175 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 SCT63X100X75
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT63X100X75 Is Used
Asymmetric Diverter Gates
Use the 100 mm and 75 mm strokes to shift a diverter chute between two distinct positions for routing parts to separate conveyor lanes, with the 175 mm total travel providing a third bypass path.
Two-Depth Press Insertion
Achieve a 100 mm primary insertion stroke and a 75 mm secondary seating stroke for installing components at two different depths in an assembly fixture, all from one compact tandem unit.
Multi-Stop Part Staging
Stage a workpiece at 75 mm for inspection, advance it to 100 mm for a secondary operation, or send it to the full 175 mm to clear the station, using discrete pneumatic stops for reliable positioning.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X100X75 the Right Cylinder?
Select the SCT63X100X75 when your process requires four repeatable stop locations using a single cylinder body, eliminating the complexity of two separate actuators and their valving. The 100 mm and 75 mm stroke sections give you asymmetric positioning that suits two-step feeding or sorting where the advance and secondary movements differ. If your force requirement is lower, stepping down to a 50 mm bore reduces push force to 982 N per section at 0.5 MPa, while moving up to an 80 mm bore increases it to 2513 N.
For replacement, match the 63 mm bore, both the 100 mm and 75 mm strokes, PT port thread, and basic mounting. If either stroke in your application exceeds 300 mm, evaluate the rod bearing load and consider an external guide to prevent side-load deflection on the 20 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 100 + 75 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 SCT63X100X75 FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 100 mm (section 1 extended), 75 mm (section 2 extended), and 175 mm (both sections extended). The positions are fixed by the two stroke lengths and are selected by pressurising the appropriate cylinder sections.
The SCT integrates both strokes onto a single common rod line, which saves space, reduces mounting hardware, and simplifies pneumatic control compared to two individual cylinders. It guarantees the relative position between the two strokes, but note that the force output is per-section (1559 N push at 0.5 MPa), not a combined total.
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