Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X15S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X15S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 15mm give 4 controllable stop positions across a 95mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 180 mm
- Stroke 215 mm
- Total travel95 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X15S
The AirTAC SCT40X80X15S is a double-acting multi-position cylinder that provides four fixed rod positions by combining two independent piston strokes on a single axis. With a 40 mm bore and a 16 mm rod, the reachable stops are 0 mm (fully retracted), 15 mm, 80 mm, and the total extended travel of 95 mm. Each section generates approximately 628 N of push force at 0.5 MPa, rising to 1130 N at 0.9 MPa, making it suitable for compact sorting or two-depth insertion tasks.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for reliable end-of-stroke or mid-position detection. The cylinder body length A(SCT) is 235 mm, and the adjustable pneumatic cushion on each section, with a cushion length of 21 mm, helps manage kinetic energy at the discrete stops without requiring external shock absorbers.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X15S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X15S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 80 / 15 mm |
| Total travel | 95 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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) | 80 mm |
| P2 (section 2) | 15 mm |
| P3 (both extended) | 95 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCT40X80X15S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×15 | 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 SCT40X80X15S Is Used
Two-Way Part Diverting
Uses the 15 mm and 80 mm positions to direct parts down separate chutes from a single conveyor lane, simplifying pneumatic routing compared to dual-cylinder setups.
Multi-Depth Press Insertion
Controls a press tool to two distinct insertion depths (15 mm and 95 mm total travel) for assembling components with stepped features, ensuring repeatable discrete stops.
Staged Clamping Fixture
Provides a partial clamp position at 15 mm for alignment and a full clamp at 95 mm, enabling a two-stage workholding sequence from a single tie-rod actuator.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X15S the Right Cylinder?
Choose the SCT40X80X15S when a single actuator must index between four distinct mechanical positions without the complexity of two separate cylinders and external hard stops. The 40 mm bore provides a balanced force class for light-to-medium transfer and diverting tasks. If the application requires higher thrust, stepping up to the 50 mm bore (SCT50) increases the per-section push force to 982 N at 0.5 MPa. For a drop-in replacement, match the 40 mm bore, the 80 mm and 15 mm section strokes, the PT port thread, and the integrated magnet (-S) suffix. Since the longer 80 mm stroke section is below 300 mm, rod buckling is not a primary concern under axial loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 15 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 SCT40X80X15S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (retracted), 15 mm (stroke 2 only), 80 mm (stroke 1 only), and 95 mm (both strokes extended). The positions are fixed by the two section strokes and are not infinitely variable.
No. Like all standard pneumatic cylinders, the SCT40X80X15S will drift or drop if air pressure is exhausted or lost. The multi-position feature provides discrete stops under active pressure only. If a load must be mechanically locked at a mid-position without live pressure, an external rod brake or pilot-operated check valve is required.
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