Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X75
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X75 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 75mm give 3 controllable stop positions across a 150mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 175 mm
- Stroke 275 mm
- Total travel150 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X75
The AirTAC SCT50X75X75 is a double-acting multi-position tandem cylinder that provides three fixed rod positions: fully retracted (0 mm), mid-stop at 75 mm, and fully extended at 150 mm. Each piston section delivers a push force of 982 N at 0.5 MPa, with a 20 mm diameter rod and PT1/4 ports. The tie-rod construction incorporates a 21 mm adjustable air cushion in each section for controlled deceleration.
This model uses a standard TPU seal with an operating temperature range of -20 to +70 °C and a body length A of 243 mm. With a maximum operating pressure of 1.0 MPa, the thrust per section reaches 1767 N, making it suitable for three-position sorting gates or two-depth pressing tasks where a single cylinder must replace two separate actuators.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X75 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X75 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 75 / 75 mm |
| Total travel | 150 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 75 mm |
| P2 (both extended) | 150 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 SCT50X75X75
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×75 | 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 SCT50X75X75 Is Used
3-Position Diverter Gate
Operates a chute or conveyor gate with three distinct positions: closed, divert to lane A at 75 mm stroke, and divert to lane B at full 150 mm extension, controlled by pressurizing each cylinder section independently.
Two-Depth Pressing Station
Provides a partial pressing depth at the 75 mm mid-stop for a pre-forming operation, followed by a full-depth press at 150 mm total travel, eliminating the need for a secondary press cylinder.
Multi-Stop Material Stop
Acts as a retractable material stop on a linear slide, offering a 75 mm intermediate stop for one workpiece length and a 150 mm extended stop for a longer part, all from a single compact tandem body.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X75 the Right Cylinder?
Select the SCT50X75X75 when your application needs three defined mechanical stops without the complexity of two independent cylinders and external hard stops. If your force requirement is lower, consider stepping down to the 40 mm bore version, which provides 628 N of push per section at 0.5 MPa. For higher thrust, the 63 mm bore SCT offers 1559 N per section at the same pressure. As a direct replacement, match the 50 mm bore, both 75 mm strokes, PT port thread, and basic mounting configuration. If your existing unit has a magnet for sensors, ensure the replacement code includes the -S suffix.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 75 + 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 SCT50X75X75 FAQ
This tandem cylinder provides three distinct rod positions because both stroke sections are equal at 75 mm. The positions are 0 mm (fully retracted), 75 mm (one section extended), and 150 mm (both sections extended for total travel).
Yes, it is designed to replace two individual cylinders in applications requiring three fixed stops. A direct replacement must match the 50 mm bore, both 75 mm strokes, PT port thread, and basic mounting. If your original setup used sensors, you will need the -S magnet option.
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