Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X300S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X300S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 300mm give 4 controllable stop positions across a 350mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 2300 mm
- Total travel350 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X300S
The SCT40X50X300S is a double-acting, multi-position tandem cylinder that delivers four discrete rod stops from two independent piston sections on a common rod. With strokes of 50 mm and 300 mm, the reachable positions are 0 mm (fully retracted), 50 mm, 300 mm, and the combined total travel of 350 mm. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, providing consistent pneumatic thrust for sequenced operations.
A built-in magnet (indicated by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position confirmation at each stop. The cylinder body has an A-length of 235 mm, uses a 16 mm diameter piston rod with an M12x1.25 thread, and features PT1/4 ports with adjustable air cushioning (21 mm cushion length) for smooth deceleration. Note that the 300 mm section stroke requires attention to side-loading and rod deflection; external guides are recommended for offset loads.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X300S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X300S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 300 mm |
| Total travel | 350 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) | 50 mm |
| P2 (section 2) | 300 mm |
| P3 (both extended) | 350 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 SCT40X50X300S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×300 | 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 SCT40X50X300S Is Used
Two-Stage Sorting Gate
Use the 50 mm stroke to partially extend a diverter for one lane and the full 350 mm travel to reach a second lane, enabling three-way product sorting from a single actuator.
Multi-Depth Press Operation
Achieve a light touch-down at 50 mm for part location, a primary pressing depth at 300 mm, and a final bottom-dead-centre position at 350 mm for coining or forming.
Sequential Part Feeding
Program a pick-and-place sequence where the rod stops at 50 mm to grip a component, extends to 300 mm for transport, and uses the 350 mm position for a secondary release point.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X300S the Right Cylinder?
Select this SCT model when your application needs four fixed mechanical stops without the complexity of servo control or multiple individual cylinders. The 50 mm and 300 mm section strokes create distinct positions ideal for a short pre-position and a longer main working stroke. If higher force is required, stepping up to the 50 mm bore SCT50 series provides 982 N of push per section at the same 0.5 MPa pressure. For a direct replacement, match the 40 mm bore, both strokes (50 mm and 300 mm), PT port thread, the built-in magnet (-S), and ensure the mounting style matches your current setup. Given the 300 mm stroke on the second section, evaluate the rod's L/10 buckling ratio and consider adding an external guide rail if the load is not purely axial.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 300 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 SCT40X50X300S FAQ
This tandem cylinder provides 4 discrete mechanical stops. The rod positions are 0 mm (fully retracted), 50 mm (first section extended), 300 mm (second section extended), and 350 mm (both sections extended for total travel).
Yes, it consolidates two pneumatic strokes into one compact tandem body. To be a direct functional replacement, the original setup must have used strokes of 50 mm and 300 mm. Ensure the replacement matches the 40 mm bore, PT1/4 ports, and the -S magnet option for sensor compatibility.
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