Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X35
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X35 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 65mm and 35mm give 4 controllable stop positions across a 100mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 165 mm
- Stroke 235 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X35
The SCT50X65X35 is a 50 mm bore tandem cylinder that provides four fixed rod positions: 0 mm (fully retracted), 35 mm, 65 mm, and 100 mm (total travel). Each of the two piston sections delivers a push force of 982 N at 0.5 MPa, rising to 1767 N at the maximum operating pressure of 0.9 MPa, making it suitable for multi-stop sorting or diverting tasks.
Built on a robust tie-rod design with a 20 mm diameter piston rod and M16x1.5 rod thread, this cylinder features a 21 mm adjustable air cushion on each section for smooth end-of-stroke deceleration. The PT1/4 port connections and a body length A(SCT) of 243 mm make it a compact choice for machines requiring three or four distinct linear stops without complex servo controls.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X35 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X35 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 65 / 35 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, 21 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) | 65 mm |
| P2 (section 2) | 35 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X65X35
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×65 | Stroke 1 (section 1) in mm. |
| ×35 | 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 SCT50X65X35 Is Used
Two-Way Part Diverting
Uses the 35 mm and 65 mm positions to direct parts down two separate chutes from a conveyor, with the fully retracted and 100 mm positions serving as home and bypass.
Multi-Depth Press Insertion
Installs bushings at two controlled depths (35 mm and 65 mm) in a single cycle, using the tandem stops for precise, repeatable insertion without a servo press.
Sequential Gate Actuation
Operates a sliding gate with four distinct openings (closed, 35 mm, 65 mm, 100 mm) to meter different material flow rates into a weighing hopper.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X65X35 the Right Cylinder?
Choose the SCT50X65X35 when your application needs four defined mechanical stops from a single pneumatic unit, eliminating the cost and complexity of two separate cylinders with external hard stops. For lighter loads, stepping down to a 40 mm bore provides 628 N of push per section, while a 63 mm bore offers 1559 N if more force is required.
This model is a direct replacement for another AirTAC SCT50X65X35 with PT ports and basic mounting. When ordering a replacement, ensure both stroke dimensions (65 mm and 35 mm), the bore, and the port thread match exactly. For strokes over 300 mm, consider external guides to protect the 20 mm rod from side-load bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 65 + 35 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 SCT50X65X35 FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 35 mm, 65 mm, and the total travel of 100 mm. Positions are achieved by pressurizing the first section, the second section, or both simultaneously.
Yes, if your sequence requires the same 65 mm and 35 mm strokes. The SCT50X65X35 integrates both movements on a single rod line, saving space and eliminating the need to synchronize two separate cylinders and their external hard stops.
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