Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X200S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X200S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 450mm and 200mm give 4 controllable stop positions across a 650mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1450 mm
- Stroke 2200 mm
- Total travel650 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X200S
The SCT40X450X200S is a double-acting multi-position tandem cylinder that provides four fixed rod positions: 0 mm (fully retracted), 200 mm, 450 mm, and the combined travel of 650 mm. Each piston section delivers 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa, driven by a 16 mm diameter piston rod.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The cylinder body has a base length of 235 mm, uses PT1/4 ports, and features an adjustable pneumatic cushion of 21 mm at each end to manage deceleration. It is a genuine AirTAC unit built for sequenced material handling tasks requiring three or four precise hard stops from a single actuator.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X200S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X200S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 450 / 200 mm |
| Total travel | 650 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) | 450 mm |
| P2 (section 2) | 200 mm |
| P3 (both extended) | 650 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 SCT40X450X200S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×450 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT40X450X200S Is Used
Four-Position Diverter Gate
Uses the four distinct stops (0, 200, 450, 650 mm) to route packages or parts to four separate conveyor lanes from a single infeed point, eliminating the need for multiple actuators.
Multi-Depth Pressing Station
Controls a press platen to three different insertion depths plus a retracted home position, ideal for assembling components that require stepped insertion forces in one cycle.
Sequenced Clamping Fixture
Provides three active clamping positions for holding different part thicknesses in a CNC fixture. The 650 mm total stroke allows the clamp to fully retract for easy part loading and unloading.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X200S the Right Cylinder?
Choosing the SCT40X450X200S over two separate cylinders or an SC unit with external hard stops simplifies the control architecture for four-position sequences, as only two solenoid valves are needed to pressurise the sections independently. If the 628 N push force at 0.5 MPa is marginal for the application, stepping up to the 50 mm bore SCT50 series provides 982 N per section at the same pressure, though the body length increases to 243 mm. For a direct replacement, match the 40 mm bore, both strokes of 450 mm and 200 mm, PT port thread, basic mounting, and the -S magnet option. Because the first stroke extends to 450 mm, consider external guides or a rod alignment coupler if the load applies a significant side force, as the long extension can increase rod deflection and bearing wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 450 + 200 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 SCT40X450X200S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 200 mm (section two extended), 450 mm (section one extended), and 650 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, in applications needing three or four fixed positions. The SCT40X450X200S uses two piston sections on a common rod, which often saves space and reduces the number of valves compared to two separate actuators. Ensure the replacement matches the 40 mm bore, both 450 mm and 200 mm strokes, PT ports, and the -S magnet feature if sensor feedback is required.
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