Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25S 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 SCT50X175X25S
The SCT50X175X25S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops: 0 mm, 25 mm, 175 mm, and the full 200 mm combined stroke. With a 50 mm bore, each actuated piston section generates 982 N of push force at 0.5 MPa, rising to 1767 N at 0.9 MPa, making it suitable for two-depth pressing or sorting tasks where a short 25 mm step and a longer 175 mm travel are needed in one compact unit.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG solid-state sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke or mid-position sensing. The cylinder body has an A(SCT) length of 243 mm, uses a 20 mm diameter piston rod with an M16x1.5 thread, and features PT1/4 ports with adjustable pneumatic cushioning over a 21 mm length to manage end-of-travel impacts.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25S |
|---|---|
| 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 SCT50X175X25S
| 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 SCT50X175X25S Is Used
Two-Depth Press Insertion
Uses the 25 mm stroke for a light pre-locate or tacking position and the 175 mm stroke for the full-force press, all from one cylinder body.
3-Way Diverter Gate
Positions a gate at 0 mm (home), 25 mm (lane 1), or 175 mm (lane 2) to sort parts on a conveyor, with the 200 mm position as an optional bypass.
Multi-Stop Clamping Fixture
Provides a 25 mm safety gap position before moving to the 175 mm full-clamp stroke, protecting parts during automated loading.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X25S the Right Cylinder?
Choose the SCT50X175X25S when your application requires two distinct, repeatable advance positions without the complexity of two separate cylinders and external hard stops. The 175 mm and 25 mm strokes are fixed by the cylinder's internal pistons, providing a simpler, more compact solution than a standard cylinder with a retract stop. If the 982 N push force per section at 0.5 MPa is insufficient, stepping up to an SCT63 bore provides 1559 N per section at the same pressure, while an SCT40 bore drops to 628 N.
For direct replacement, match the 50 mm bore, both the 175 mm and 25 mm strokes, PT port thread, basic mounting, and the -S magnet option. As the 175 mm section stroke exceeds 150 mm, ensure the rod is adequately guided or supported if significant side loads are present to prevent bending or premature seal wear.
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 SCT50X175X25S FAQ
This tandem cylinder provides four discrete rod positions: fully retracted (0 mm), the first section extended (25 mm), the second section extended (175 mm), and both sections extended for the total travel (200 mm). It does not offer infinitely variable positioning.
The SCT integrates two piston sections on a single rod line, giving you fixed 25 mm and 175 mm stops in one tie-rod assembly. This saves space, eliminates the need to align two cylinder bodies, and simplifies pneumatic plumbing to achieve the same multi-position functionality.
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