Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X65
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X65 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 45mm and 65mm give 4 controllable stop positions across a 110mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 145 mm
- Stroke 265 mm
- Total travel110 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X65
The SCT40X45X65 tandem cylinder provides four fixed rod positions—fully retracted, 45 mm, 65 mm, and the total travel of 110 mm—by pressurizing its two piston sections independently or together. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, scaling to 1130 N at 0.9 MPa, making it a compact solution for multi-stop linear tasks.
A 16 mm diameter rod and PT1/4 ports ensure reliable air flow, while the 21 mm adjustable end cushion on each section decelerates the load smoothly. The tie-rod body has an A(SCT) length of 235 mm, and the standard TPU seals suit operating temperatures from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X65 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X65 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 45 / 65 mm |
| Total travel | 110 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) | 45 mm |
| P2 (section 2) | 65 mm |
| P3 (both extended) | 110 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 SCT40X45X65
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×45 | Stroke 1 (section 1) in mm. |
| ×65 | 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 SCT40X45X65 Is Used
Two-Stage Part Diverting
Actuate a diverter gate to four distinct positions for sorting packages or components onto three separate conveyor lanes plus a neutral home position.
Multi-Depth Pressing
Control a pressing tool to two different insertion depths (45 mm and 110 mm) for assembling components with staged interference fits in one cycle.
Sequential Stop Feeding
Index a workpiece carrier forward by 45 mm, then an additional 65 mm, for a two-step machining or dispensing process using a single cylinder.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X65 the Right Cylinder?
Choose this SCT when a single actuator must index to four distinct positions, eliminating the complexity of two separate cylinders and external hard stops. The 45 mm and 65 mm strokes create an asymmetric position set ideal for two-stage feeding or diverting. If higher force is needed, stepping up to the 50 mm bore (SCT50) provides 982 N of push per section at 0.5 MPa.
For a direct replacement, match the 40 mm bore, both 45 mm and 65 mm section strokes, PT port thread, and basic mounting. This model does not include a magnet; if sensor feedback is required, specify the -S suffix. Ensure the guided load is aligned with the rod axis to prevent side-loading on the 16 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 45 + 65 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 SCT40X45X65 FAQ
It provides four discrete stop positions: 0 mm (fully retracted), 45 mm (section 1 extended), 65 mm (section 2 extended), and 110 mm (both sections extended, total travel). The positions are fixed by the two stroke lengths and are selected by pressurizing the cylinder sections individually or together.
Yes, in applications requiring two fixed intermediate stops. The SCT40X45X65 integrates both strokes on a common rod line, reducing mounting space and alignment complexity compared to two individual cylinders with external stops. Ensure the replacement matches the 40 mm bore, 45 mm and 65 mm strokes, PT ports, and basic mounting.
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