Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 175mm and 50mm give 4 controllable stop positions across a 225mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 1175 mm
- Stroke 250 mm
- Total travel225 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X50S
The SCT50X175X50S tandem cylinder delivers four discrete stop positions—0 mm, 50 mm, 175 mm, and the full 225 mm travel—by combining two piston sections on a common 20 mm rod. Each section generates 982 N of push force at 0.5 MPa, rising to 1767 N at 0.9 MPa, making it suitable for multi-step clamping or sorting tasks where intermediate stops eliminate the need for two separate actuators.
A built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for position confirmation at every stop. The cylinder body has a 243 mm base length and uses 21 mm adjustable air cushioning at both ends, with PT1/4 ports and an M16x1.5 rod thread.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 175 / 50 mm |
| Total travel | 225 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) | 50 mm |
| P3 (both extended) | 225 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 SCT50X175X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×175 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT50X175X50S Is Used
Two-Stage Part Sorting
Extend to 50 mm for a measurement stop, then to 225 mm to divert the part down a separate chute, all verified by barrel-mounted sensors.
Sequential Clamping
Apply a light clamp at the 175 mm intermediate position before driving to the full 225 mm for high-force holding, controlled by two valve signals.
Multi-Depth Press Feeding
Feed material to a shallow 50 mm depth for pre-forming, then advance to 225 mm for the final press stroke, using the magnet for end-of-stroke sensing.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X175X50S the Right Cylinder?
Choose the SCT50X175X50S when your sequence requires a long primary stroke and a short secondary stroke—for instance, an advance to a staging point followed by a final push. If the 982 N per-section force is marginal, stepping up to the SCT63 bore provides 1559 N per section at the same 0.5 MPa. For drop-in replacement, match the 50 mm bore, both 175 mm and 50 mm strokes, the PT port thread, the basic mounting style, and the -S magnet suffix; the SCT is a tie-rod cylinder and does not interchange with ISO 15552 profiles. Because the 175 mm stroke section extends significantly, ensure the rod is guided or the load is centred to prevent side-load deflection.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 175 + 50 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 SCT50X175X50S FAQ
It provides four distinct positions: fully retracted (0 mm), the first section extended (50 mm), the second section extended (175 mm), and both sections extended together (225 mm total travel).
Yes, if your application needs a 50 mm and a 175 mm stroke from the same rod line. The SCT50X175X50S eliminates the need for dual mounting brackets and synchronisation, but you must match the PT1/4 ports and the -S magnet option if your existing setup uses sensors.
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