Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 175mm and 25mm give 4 controllable stop positions across a 200mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 1175 mm
- Stroke 225 mm
- Total travel200 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25
The SCT50X175X25 is a tandem double-acting cylinder that delivers four fixed rod positions from a single compact assembly: fully retracted (0 mm), 25 mm, 175 mm, and the total extended travel of 200 mm. Each 50 mm bore section generates 982 N of push force at 0.5 MPa, making this unit suitable for applications requiring a long primary stroke with a short secondary positioning step.
Built on a durable tie-rod construction with a 20 mm diameter piston rod and M16x1.5 rod thread, this cylinder includes an adjustable air cushion (21 mm length) for smooth end-of-stroke deceleration. The PT1/4 ports supply each section independently, and the body length A(SCT) is 243 mm, providing a rigid platform for multi-stop material handling or sorting tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 175 / 25 mm |
| Total travel | 200 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) | 175 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 200 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 SCT50X175X25
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×175 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT50X175X25 Is Used
Two-Stage Part Diverting
Uses the 25 mm stroke to clear a gate edge and the 175 mm stroke to push parts fully onto a parallel conveyor lane, achieving reliable sorting with one cylinder.
Multi-Depth Labeling
Positions a tamp pad at two distinct heights (25 mm and 175 mm) to apply labels to product surfaces on different planes without changing tooling.
Sequential Clamping
Provides a light 25 mm pre-clamp to align a workpiece, followed by a full 175 mm power stroke to secure it for machining, all from a single pneumatic circuit.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25 the Right Cylinder?
Select the SCT50X175X25 when a single actuator must provide a long 175 mm transfer stroke and a precise 25 mm intermediate stop, eliminating the complexity of two separate cylinders and external hard stops. If higher force is needed, stepping up to the 63 mm bore provides 1559 N of push per section at 0.5 MPa. For a direct replacement, match the 50 mm bore, both strokes (175 mm and 25 mm), PT port thread, and basic mounting configuration exactly.
With the primary stroke exceeding 150 mm, consider external guide rods or a linear rail if the application imposes significant side loads, as the long extension can increase the bending moment on the 20 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 175 + 25 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 SCT50X175X25 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 25 mm (section two extended), 175 mm (section one extended), and 200 mm (both sections extended, total travel). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, it is designed to replace setups using two separate 50 mm bore cylinders and external stops to achieve two distinct extend positions. A replacement must match the 50 mm bore, both 175 mm and 25 mm strokes, PT port thread, and basic mounting to ensure identical fit and pneumatic interface.
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