Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X104X396SH
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X104X396SH is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 104mm and 396mm give 4 controllable stop positions across a 500mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 1104 mm
- Stroke 2396 mm
- Total travel500 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X104X396SH
The SCT50X104X396SH is a double-acting multi-position tandem cylinder that delivers four distinct, repeatable rod positions: fully retracted (0 mm), 104 mm, 396 mm, and the total extended travel of 500 mm. Each of the two 50 mm bore sections generates 982 N of push force at 0.5 MPa, with a maximum thrust of 1767 N per section at the 0.9 MPa operating limit, driven through a rigid 20 mm diameter piston rod.
Engineered for high-temperature environments, the 'H' suffix specifies Viton (FKM) seals, extending the operating range from 0°C to +150°C, making it suitable for hot air, chemical exposure, or aggressive ambient conditions. The integrated 'S' magnet ring allows direct mounting of CMSG/DMSG sensors on the tie-rod barrel for non-contact position sensing, while the 21 mm adjustable air cushion at each end section decelerates the 500 mm total stroke smoothly.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X104X396SH Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X104X396SH |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 104 / 396 mm |
| Total travel | 500 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) | 104 mm |
| P2 (section 2) | 396 mm |
| P3 (both extended) | 500 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 SCT50X104X396SH
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×104 | Stroke 1 (section 1) in mm. |
| ×396 | 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 SCT50X104X396SH Is Used
Two-Stage Diverter Gate
Uses the 104 mm and 396 mm mid-stops to route packages onto two separate conveyor lanes, with the full 500 mm stroke clearing a reject chute, all from a single cylinder body.
Multi-Depth Hot Press
The 0-150°C Viton seals allow this cylinder to perform a shallow 104 mm pre-press and a deep 396 mm final forming stroke in a heated platen application without degrading.
Sequential Clamping Fixture
Provides a 104 mm initial part contact position, a 396 mm high-pressure clamp, and a full 500 mm retract for unloading, with CMSG sensors confirming each discrete stop.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X104X396SH the Right Cylinder?
Choose this 4-position SCT configuration when your process requires two distinct extended stops—here at 104 mm and 396 mm—plus a full 500 mm reach, eliminating the cost and complexity of two separate cylinders with external hard stops. If the 982 N push force per section at 0.5 MPa is marginal for the application, stepping up to the 63 mm bore SCT provides 1559 N of push force per section, though it increases the body length to 249 mm plus strokes. For a direct replacement, match the 50 mm bore, both 104 mm and 396 mm strokes, PT port thread, basic mounting, and the -S magnet option; the Viton seal variant is critical if the operating temperature exceeds 70°C. With the 396 mm section stroke approaching 400 mm, consider external guide rods or a linear slide to protect the 20 mm rod from side-load deflection and ensure long seal life.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 104 + 396 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 SCT50X104X396SH FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 104 mm (section one extended), 396 mm (section two extended), and 500 mm (both sections extended for total travel). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates two piston sections on a single common rod line, guaranteeing coaxial alignment of the 104 mm and 396 mm strokes and reducing the installed footprint. It also simplifies pneumatic control to three valve signals (extend section 1, extend section 2, or both) versus synchronizing two independent actuators with external hard stops.
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