Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X45
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X45 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 45mm give 4 controllable stop positions across a 120mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 175 mm
- Stroke 245 mm
- Total travel120 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X45
The SCT50X75X45 is a tandem multi-position pneumatic cylinder that delivers four fixed rod positions from a single tie-rod body: 0 mm (fully retracted), 45 mm, 75 mm, and 120 mm total travel. Each 50 mm bore piston section generates 982 N of push force at 0.5 MPa, making it suitable for diverting or sorting tasks that need more than two end-of-stroke locations without complex servo controls.
Built on a rigid tie-rod construction with a 20 mm diameter rod and M16x1.5 rod thread, the cylinder body has an A(SCT) dimension of 243 mm. Both sections feature adjustable pneumatic cushioning over a 21 mm length to decelerate the load smoothly at each stop. The standard PT1/4 ports and TPU seals cover a -20 to +70 °C operating range.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X45 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X45 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 75 / 45 mm |
| Total travel | 120 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) | 75 mm |
| P2 (section 2) | 45 mm |
| P3 (both extended) | 120 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 SCT50X75X45
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×45 | 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 SCT50X75X45 Is Used
Two-Stage Diverter Gate
Operates a conveyor gate with four positions: closed, partial-open to lane A (45 mm), partial-open to lane B (75 mm), and full-open (120 mm) for maintenance bypass.
Multi-Depth Pressing
Provides two distinct pressing depths (45 mm and 75 mm) plus a full-return position, ideal for inserting components to different depths in a single assembly station.
Staggered Part Ejection
Ejects parts to three separate chutes by stopping at 45 mm, 75 mm, or the full 120 mm stroke, sorting parts by quality grade without multiple actuators.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X45 the Right Cylinder?
Choose the SCT when a process needs three or four discrete mechanical stops that are more repeatable than an external stop system on a single-rod cylinder. The 50 mm bore offers a mid-range force of 982 N push at 0.5 MPa; if the load is lighter, stepping down to a 40 mm bore (628 N push) reduces air consumption, while a 63 mm bore (1559 N push) handles heavier tooling. For replacement, match the bore, both strokes (75 mm and 45 mm), PT port thread, and basic mounting style exactly. Because the total extended length reaches 120 mm, ensure the rod is guided if significant side loads are present at full extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 45 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 SCT50X75X45 FAQ
It provides four distinct rod positions: 0 mm (retracted), 45 mm (stroke 2 only), 75 mm (stroke 1 only), and 120 mm (both sections extended). The positions are fixed by the two section strokes and are selected by pressurising the appropriate cylinder ports.
Yes, in applications where you need three or four fixed mechanical stops on the same rod axis. The SCT50X75X45 integrates both strokes into one tie-rod body, eliminating the alignment and mounting complexity of two separate cylinders. Ensure the replacement matches the 75 mm and 45 mm strokes, PT ports, and basic mounting.
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