Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X20X20S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X20X20S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 20mm and 20mm give 3 controllable stop positions across a 40mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 120 mm
- Stroke 220 mm
- Total travel40 mm
- Positions3 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X20X20S
The SCT32X20X20S is a multi-position tandem cylinder that provides three fixed rod positions: fully retracted (0 mm), the first stroke extended (20 mm), and both strokes extended for a total travel of 40 mm. Each 32 mm bore section generates 402 N of push force at 0.5 MPa, driven by a 12 mm diameter piston rod through PT1/8 ports.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable end-of-stroke or mid-position detection. The compact body has a length A of 233 mm and uses a 21 mm adjustable air cushion to decelerate the load smoothly at each stop.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X20X20S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X20X20S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 20 / 20 mm |
| Total travel | 40 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 20 mm |
| P2 (both extended) | 40 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCT32X20X20S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×20 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT32X20X20S Is Used
3-Position Diverter Gate
Use the three discrete stops to route small packages or components to left, center, and right lanes on a conveyor line, with sensors confirming the gate position at each stop.
Multi-Level Part Staging
Stage parts at two different heights in an assembly fixture. The 20 mm and 40 mm extensions offer precise, repeatable lift positions for pick-and-place tooling.
Dual-Depth Pressing
Perform a two-stage pressing operation where the first 20 mm stroke pre-positions the tool and the combined 40 mm stroke applies the final press depth.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X20X20S the Right Cylinder?
Select the SCT32X20X20S when your application needs three positive mechanical stops without the complexity of two separate cylinders and external hard stops. The 32 mm bore is ideal for light sorting or diverting tasks; if you need more force, stepping up to the 40 mm bore provides 628 N of push per section at the same 0.5 MPa pressure.
For a direct replacement, match the 32 mm bore, both 20 mm strokes, PT port thread, basic mounting, and the -S magnet option. Any substitute must replicate the exact 20 mm and 20 mm section strokes to preserve the 0-20-40 mm position set.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 20 + 20 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 SCT32X20X20S FAQ
This model provides 3 distinct mechanical stops: 0 mm (fully retracted), 20 mm (first section extended), and 40 mm (both sections extended). The two equal 20 mm strokes create a three-position sequence.
Yes, the -S suffix designates a built-in magnet, so CMSG reed switches or DMSG/EMSG solid-state sensors can be clamped directly onto the tie-rod barrel to detect piston position at any of the three stops.
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