Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X175S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X175S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 175mm give 4 controllable stop positions across a 200mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 125 mm
- Stroke 2175 mm
- Total travel200 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X175S
The SCT50X25X175S is a tandem multi-position cylinder that provides four fixed rod positions: fully retracted (0 mm), 25 mm, 175 mm, and the combined total travel of 200 mm. Each 50 mm bore section generates 982 N of push force at 0.5 MPa, making it a compact solution for tasks requiring two distinct extension lengths from a single tie-rod assembly.
A built-in magnet on the piston allows direct mounting of CMSG, DMSG, or EMSG sensors for non-contact position feedback at each stop. The 20 mm diameter rod and 21 mm adjustable air cushion at each end ensure reliable deceleration, while the PT1/4 ports and M16x1.5 rod thread maintain compatibility with standard AirTAC accessories.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X175S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X175S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 25 / 175 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) | 25 mm |
| P2 (section 2) | 175 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 SCT50X25X175S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×175 | 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 SCT50X25X175S Is Used
Two-Stage Sorting Gate
Use the 25 mm position to divert lightweight items and the full 200 mm extension to redirect heavier pallets on a conveyor line, all controlled by a single valve manifold.
Dual-Depth Labeling
Apply a label at a 25 mm standoff distance for flat products, then extend to 175 mm to label a recessed surface, maintaining consistent pressure from the 982 N push force.
Sequential Clamping
Clamp a thin workpiece at the 25 mm stop for light machining, then retract and re-extend to the 175 mm position to secure a thicker part, using sensor feedback from the built-in magnet.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X175S the Right Cylinder?
Select the SCT50X25X175S when your process needs a short 25 mm advance for one operation and a longer 175 mm stroke for another, eliminating the complexity of two separate cylinders. For higher force requirements, consider stepping up to the 63 mm bore, which provides 1559 N of push per section at the same 0.5 MPa pressure. If a lower force is acceptable, the 40 mm bore offers 628 N.
To replace this unit, match the 50 mm bore, both the 25 mm and 175 mm strokes, PT port thread, and the -S magnet option. Since the combined stroke is 200 mm, ensure the rod is guided if the load applies any significant side force during the longer extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 175 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 SCT50X25X175S FAQ
This cylinder reaches four discrete positions: 0 mm (fully retracted), 25 mm (first section extended), 175 mm (second section extended), and 200 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, the -S suffix indicates a built-in magnet, so you can mount CMSG reed switches or DMSG/EMSG solid-state sensors directly onto the cylinder barrel to detect each of the four positions.
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