Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X100S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X100S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 100mm give 4 controllable stop positions across a 175mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 175 mm
- Stroke 2100 mm
- Total travel175 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X100S
The SCT50X75X100S is a double-acting multi-position cylinder that delivers four discrete rod stops: 0 mm, 75 mm, 100 mm, and the full 175 mm total travel. Each 50 mm bore piston section provides 982 N of push force at 0.5 MPa, making it suitable for sorting gates or two-depth clamping fixtures where distinct mid-stroke positions are required. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-position or mid-stroke detection.
This tandem cylinder uses a 20 mm diameter piston rod with M16x1.5 threads and PT1/4 ports. The adjustable air cushion at each end is 21 mm long, and the total body length A(SCT) is 243 mm. At the maximum operating pressure of 0.9 MPa, each section generates 1767 N of push force. The TPU seals suit ambient temperatures from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X100S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X100S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 75 / 100 mm |
| Total travel | 175 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) | 100 mm |
| P3 (both extended) | 175 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 SCT50X75X100S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT50X75X100S Is Used
3-Way Diverter Gate
Uses the 0 mm, 75 mm, and 175 mm positions to route packages to three separate conveyor lanes. The sensor magnet confirms the gate has reached each lane before the next product arrives.
Two-Depth Press Insertion
Installs bushings at two different depths in a single cycle. The 75 mm stop sets the first depth, and the full 175 mm stroke completes the second, deeper insertion with consistent force.
Multi-Stop Clamping Fixture
Clamps tall and short workpiece variants on one fixture. The 100 mm position handles standard parts, while the 175 mm position accommodates taller assemblies, with the sensor confirming clamp engagement.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X100S the Right Cylinder?
Choose the SCT50X75X100S when a single cylinder must provide three intermediate stopping points without the complexity of two separate actuators and external hard stops. If the 982 N push force per section is slightly low, stepping up to the 63 mm bore SCT63 variant provides 1559 N at the same pressure. For replacement, match the 50 mm bore, both 75 mm and 100 mm strokes, PT thread, and the -S magnet option. The basic mounting style accepts foot, flange, or clevis accessories from the SCT range.
Since the combined stroke reaches 175 mm, ensure the rod is adequately guided if significant side loads are present. The cylinder does not lock its position when air pressure is removed; an external rod brake or pilot-operated check valve is needed to hold the load at any of the four stops without live pressure.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 100 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 SCT50X75X100S FAQ
This model provides four distinct mechanical stops because the two strokes are different lengths. The rod can be positioned at 0 mm (fully retracted), 75 mm, 100 mm, and the total extended length of 175 mm by pressurising the sections individually or together.
Yes, if your application requires three or four fixed stopping points. The SCT replaces two separate cylinders and external stops, reducing plumbing and mounting hardware. Ensure the 50 mm bore, 75 mm and 100 mm strokes, and PT port thread match your existing design. The -S suffix indicates the built-in magnet for sensor mounting.
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