Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X285X285S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X285X285S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 285mm and 285mm give 3 controllable stop positions across a 570mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1285 mm
- Stroke 2285 mm
- Total travel570 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X285X285S
The SCT63X285X285S is a tandem multi-position cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stop at 285 mm, and fully extended at 570 mm total travel. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa, making it a robust actuator for intermediate positioning tasks.
This model features a built-in magnet, enabling direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for precise, non-contact position feedback. With a 20 mm diameter piston rod, M16x1.5 rod thread, and PT1/4 ports, the cylinder body has an A-length of 249 mm plus stroke, and uses a 28 mm adjustable air cushion to decelerate the load smoothly at each end of the 570 mm total stroke.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X285X285S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X285X285S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 285 / 285 mm |
| Total travel | 570 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 28 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) | 285 mm |
| P2 (both extended) | 570 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCT63X285X285S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×285 | Stroke 1 (section 1) in mm. |
| ×285 | 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 SCT63X285X285S Is Used
3-Position Sorting Gate
Use the three discrete stops (0, 285, 570 mm) to divert packages or parts onto three different conveyor lanes. The built-in magnet allows sensors to confirm the gate's position at each stop, ensuring reliable, high-speed sortation.
Two-Depth Pressing & Staking
Actuate a press tool to a partial depth at 285 mm for an initial forming operation, then extend to the full 570 mm for a final staking or coining step. The consistent 1559 N force at 0.5 MPa per section provides repeatable results for both stages.
Multi-Stop Part Feeding
Control a stop pin or escapement mechanism with three precise positions to meter parts from a magazine. The 28 mm air cushion at each end protects the assembly from impact shock during the 570 mm total travel, extending service life.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X285X285S the Right Cylinder?
Choose the SCT when your application needs a defined mid-stop without the complexity of two separate cylinders and external bracketry. This 63 mm bore model, with 1559 N of push per section at 0.5 MPa, is a step up from the 50 mm bore (982 N) for heavier guided loads, while the 80 mm bore (2513 N) is available if you require significantly more force. The 285 mm section strokes are within the standard range, ensuring good availability.
For a direct replacement, match the 63 mm bore, both 285 mm strokes, PT port thread, and the -S magnet option for sensor compatibility. Since each section stroke is 285 mm, ensure the load is externally guided to prevent rod bending and side-load damage, especially when approaching the 570 mm full extension. The basic mounting configuration allows you to add FA/FB flanges, CA/CB devises, or LB feet as needed.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 285 + 285 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 SCT63X285X285S FAQ
This cylinder has 3 distinct, fixed stop positions because both section strokes are equal at 285 mm. The rod positions are 0 mm (fully retracted), 285 mm (mid-stop), and 570 mm (fully extended). You select the position by pressurizing the first section, the second section, or both simultaneously.
Yes, it is designed as a compact, single-body alternative to two standard cylinders mounted back-to-back for a 3-position application. For a direct replacement, ensure the alternative setup matches the 63 mm bore, both 285 mm strokes, PT ports, and includes a magnet for sensors. The SCT eliminates the need for external coupling brackets and simplifies alignment.
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