Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X20S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X20S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 60mm and 20mm give 4 controllable stop positions across a 80mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 160 mm
- Stroke 220 mm
- Total travel80 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X20S
The SCT40X60X20S is a tandem multi-position cylinder that delivers four fixed rod positions from a single compact unit: 0 mm (fully retracted), 60 mm, 20 mm, and 80 mm total travel. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, making it a capable actuator for light sorting and diverting tasks. The built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors along the 16 mm diameter rod line for reliable position feedback.
This double-acting cylinder features a 235 mm tie-rod body length and adjustable pneumatic cushioning at both ends for smooth deceleration. With PT1/4 ports and an M12x1.25 rod thread, it integrates easily into standard pneumatic circuits. The TPU seals provide a reliable operating range from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X20S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X20S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 60 / 20 mm |
| Total travel | 80 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) | 60 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 80 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 SCT40X60X20S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×60 | 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 SCT40X60X20S Is Used
Two-Way Part Sorting
Uses the 20 mm and 60 mm positions to direct parts down two different chutes from a single conveyor line, with the 0 mm and 80 mm positions serving as home and a third divert path.
Multi-Level Pallet Stop
Provides a 20 mm low-profile stop and a 60 mm high-profile stop for pallets of varying heights on a gravity roller conveyor, controlling flow without complex controls.
Two-Depth Pressing or Staking
Delivers a precise 20 mm initial contact stroke followed by a 60 mm high-force pressing stroke, all from one actuator with sensor-confirmed position feedback via the integrated magnet.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X20S the Right Cylinder?
Select the SCT when your application needs up to four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 60 mm and 20 mm stroke combination provides asymmetric positioning ideal for a two-step feed-and-lift sequence. If higher force is needed, consider stepping up to the SCT50 bore, which provides 982 N of push per section at 0.5 MPa.
For a direct replacement, match the 40 mm bore, both the 60 mm and 20 mm strokes, PT port thread, and the built-in magnet (-S suffix). This basic mount model can be ordered with optional FA/FB flanges or CA/CB clevises if your mounting configuration changes. Ensure the rod is guided if the 20 mm stroke section is used to push a load off-axis.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 60 + 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 SCT40X60X20S FAQ
This model provides four discrete mechanical stops: 0 mm (fully retracted), 60 mm (section 1 extended), 20 mm (section 2 extended), and 80 mm (both sections extended). The positions are achieved by pressurizing the two piston sections independently or together.
Yes, if your sequence requires fixed 20 mm and 60 mm strokes. The SCT integrates both strokes into a single tie-rod body, saving space and eliminating the need to align two separate actuators. Ensure the replacement matches the PT1/4 ports and the -S magnet option if you are currently using sensors.
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