Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X250S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X250S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 200mm and 250mm give 4 controllable stop positions across a 450mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1200 mm
- Stroke 2250 mm
- Total travel450 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X250S
The SCT63X200X250S is a double-acting multi-position cylinder that provides four distinct rod positions: fully retracted (0 mm), 200 mm, 250 mm, and a total extended travel of 450 mm. Each piston section generates 1559 N of push force at 0.5 MPa, scaling to 2805 N at 0.9 MPa, making it a robust actuator for sequenced movements. The 20 mm diameter rod and 28 mm adjustable air cushion at each end ensure smooth deceleration across all four stops.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be directly mounted on the tie-rod barrel for non-contact position sensing. Operating on standard PT1/4 ports, the cylinder body has an A-length of 249 mm, providing a compact footprint for its 450 mm total travel. It is a genuine AirTAC tandem unit, factory-tested for reliable multi-stop indexing tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X250S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X250S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 200 / 250 mm |
| Total travel | 450 mm |
| Stop positions | 4 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 200 mm |
| P2 (section 2) | 250 mm |
| P3 (both extended) | 450 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 SCT63X200X250S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×200 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT63X200X250S Is Used
Two-Stage Diverter Gate
Use the four positions (0, 200, 250, 450 mm) to route packages to three separate conveyor lanes. The intermediate stops allow a single cylinder to replace a complex servo-driven diverter.
Multi-Depth Pressing
Control a pressing tool to two different insertion depths in one cycle. The 200 mm and 250 mm stops set coarse and fine depths, with the full 450 mm travel used for part ejection.
Sequential Clamping Fixture
Clamp a workpiece with partial force at 200 mm, then apply full clamping at 250 mm. The magnetic piston enables sensor confirmation at each discrete position before the next machining step.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X200X250S the Right Cylinder?
Choosing this SCT configuration gives you four fixed mechanical stops from a single actuator, eliminating the need to synchronize two separate cylinders or install external hard stops. If your application requires higher force, consider stepping up to the 80 mm bore SCT, which provides 2513 N of push per section at 0.5 MPa. For a direct replacement, match the 63 mm bore, both 200 mm and 250 mm section strokes, PT1/4 thread, basic mounting, and the -S magnet option.
With a 200 mm stroke on the first section and 250 mm on the second, ensure the load is guided if it applies significant side force, as the extended rod length at 450 mm total travel can experience bending moments. Using an external guide or rod support will protect the piston seals and bearing from premature wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 200 + 250 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 SCT63X200X250S FAQ
This tandem cylinder has four discrete rod positions: 0 mm (fully retracted), 200 mm (first section extended), 250 mm (second section extended), and 450 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, it often can. The SCT63X200X250S provides the same per-section force (1559 N push at 0.5 MPa) as a standard SC63 but delivers three or four fixed mechanical stops from a single rod line. This eliminates the complexity of aligning and sequencing two separate actuators. Ensure the replacement matches the 63 mm bore, both 200 mm and 250 mm strokes, PT1/4 ports, and the magnetic piston option.
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