Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X10S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X10S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 10mm give 4 controllable stop positions across a 60mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 210 mm
- Total travel60 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X10S
The SCT40X50X10S is a double-acting multi-position cylinder that delivers four fixed rod positions from a single compact assembly: fully retracted (0 mm), 10 mm, 50 mm, and the combined total travel of 60 mm. Each of its two piston sections provides a push force of 628 N at 0.5 MPa, scaling up to 1130 N at the maximum operating pressure of 0.9 MPa, driven through a 16 mm diameter piston rod.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing at any of the four stops. The cylinder body has a basic mount configuration and uses standard PT ports, with a total body length of 235 mm plus the 60 mm stroke, making it a space-efficient solution for tasks requiring two short, distinct extension lengths.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X10S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X10S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 10 mm |
| Total travel | 60 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) | 10 mm |
| P3 (both extended) | 60 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 SCT40X50X10S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×10 | 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 SCT40X50X10S Is Used
Two-Stage Sorting Gate
Uses the 10 mm stroke to nudge a part into a measurement position and the 50 mm stroke to fully divert it down a reject chute, providing a compact, sensor-confirmed sorting action.
Dual-Depth Pressing
Provides a light 10 mm touch for delicate part location, then a full 50 mm power stroke for a pressing or staking operation, all within a single actuator body.
Multi-Stop Part Feeding
Controls a stop pin with four positions: retracted for part flow, 10 mm for a low-profile stop, 50 mm for a taller part, and 60 mm for a complete line halt.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X10S the Right Cylinder?
Select the SCT40X50X10S when your application requires two different, repeatable extension lengths—such as a 10 mm pre-load or sensing step followed by a 50 mm working stroke—without the complexity of two separate cylinders and valves. This tandem unit simplifies plumbing and guarantees the mechanical sequence of the two strokes. If higher force is needed, consider stepping up to the 50 mm bore, which delivers 982 N of push per section at the same 0.5 MPa pressure.
For a direct replacement, match the 40 mm bore, both the 50 mm and 10 mm strokes, the PT port thread, and the built-in magnet. This cylinder uses a basic mount, so ensure your machine frame can accept the tie-rod body. Given the short 10 mm stroke on the second section, side-loading is minimal, but always align the rod with the load to prevent premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 10 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 SCT40X50X10S FAQ
This cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 10 mm, 50 mm, and the total combined stroke of 60 mm. These are achieved by pressurizing either the first section, the second section, or both simultaneously.
No, the SCT is a purely pneumatic cylinder and does not have a mechanical locking or braking feature. If air pressure is lost or a directional valve is centered, the piston rod can drift or drop. To hold a load at the 10 mm or any other position without live pressure, you must add an external rod brake, a pilot-operated check valve, or a mechanical lock.
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