Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X75
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X75 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 75mm give 4 controllable stop positions across a 125mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 150 mm
- Stroke 275 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X75
The SCT63X50X75 tandem cylinder delivers four fixed rod positions—0 mm, 50 mm, 75 mm, and the combined 125 mm total travel—from a single compact unit. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa (2805 N at the maximum operating pressure of 0.9 MPa), driven through a rigid 20 mm diameter piston rod.
With a body length of 249 mm and a 28 mm air cushion at each end, this double-acting design eliminates the complexity of mounting two separate cylinders and external stops. It uses PT1/4 ports and an M16x1.5 rod thread, operating reliably on standard 40 µm filtered air across a -20 to +70 °C range with its default TPU seals.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X75 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X75 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 50 / 75 mm |
| Total travel | 125 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) | 75 mm |
| P3 (both extended) | 125 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 SCT63X50X75
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×50 | 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 SCT63X50X75 Is Used
Two-Stage Diverter Gate
Actuates a sorting gate to three distinct positions—retracted for lane one, 50 mm for lane two, and 75 mm for lane three—with the 125 mm position used for a maintenance bypass, all from a single pneumatic circuit.
Multi-Depth Pressing
Provides two controlled pressing depths in a light assembly fixture. The 50 mm stroke sets an initial contact, while the 75 mm section applies the final seating force, ensuring consistent part insertion without over-travel.
Sequential Part Feeding
Manages a three-step feed mechanism where the rod advances to 50 mm to separate a component, extends to 75 mm to present it, and retracts fully, using the 125 mm combined stroke only during a manual clearing cycle.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X50X75 the Right Cylinder?
Choose the SCT63X50X75 when your process needs exactly four mechanical stop points without the alignment hassle of dual-cylinder setups. If your load demands higher force, stepping up to the SCT80 bore provides 2513 N of push per section at 0.5 MPa; for a lighter, more compact solution, the SCT50 bore offers 982 N. This model is a direct replacement only for an identical AirTAC SCT63X50X75 matching the PT thread and basic mounting configuration.
Given the 125 mm total extension, ensure the rod is adequately guided if significant side loads are present, as tandem cylinders have a longer unsupported length than their single-stroke equivalents. The built-in 28 mm cushion absorbs end-of-stroke impact effectively for smooth deceleration.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 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 SCT63X50X75 FAQ
This tandem cylinder provides four discrete mechanical stops: fully retracted (0 mm), the first section extended (50 mm), the second section extended (75 mm), and both sections extended simultaneously for a total travel of 125 mm. These are fixed positions, not infinitely adjustable.
Yes, the SCT63X50X75 is designed to replace a dual-cylinder setup requiring 50 mm and 75 mm strokes. It ensures perfect alignment between the two stop positions and simplifies your pneumatic plumbing. Ensure the replacement matches the 63 mm bore, PT1/4 ports, and basic mounting to be a direct fit.
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