Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X450S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X450S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 450mm give 4 controllable stop positions across a 525mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 175 mm
- Stroke 2450 mm
- Total travel525 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X450S
The SCT63X75X450S is a double-acting multi-position tandem cylinder that provides four fixed rod positions: fully retracted (0 mm), 75 mm, 450 mm, and the combined total travel of 525 mm. By pressurizing either or both of its two piston sections, you select a discrete mechanical stop without external hard stops or complex servo controls. Each section delivers a push force of 1559 N at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa, driven by a 20 mm diameter rod.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG solid-state and reed sensors to mount directly onto the tie-rod barrel for reliable end-of-stroke or mid-position sensing. The cylinder body has an A(SCT) length of 249 mm, with an adjustable air cushion of 28 mm at each end to decelerate the load smoothly. Operating on standard PT1/4 ports, it is suited for sorting gates and multi-depth pressing operations requiring sensor feedback at each stop.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X450S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X450S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 75 / 450 mm |
| Total travel | 525 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) | 75 mm |
| P2 (section 2) | 450 mm |
| P3 (both extended) | 525 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 SCT63X75X450S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×450 | 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 SCT63X75X450S Is Used
Two-Stage Diverter Gate
Use the 75 mm stroke to clear a gate and the 450 mm stroke to fully divert packages onto a secondary conveyor, with sensor confirmation at each position via the built-in magnet.
Multi-Depth Pressing
Achieve a light pre-press at 75 mm extension and a full-depth forming press at 525 mm total travel, with the 0.9 MPa thrust of 2805 N per section handling the work.
Sequential Part Staging
Stage a part at a 75 mm inspection station, then advance it 450 mm to a pick-and-place point, using magnetic sensors to verify the cylinder has reached each discrete stop.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X450S the Right Cylinder?
Select this SCT when your application needs four distinct, repeatable stop positions along a single linear axis, eliminating the cost and complexity of two separate cylinders with external bracketry. The 75 mm and 450 mm stroke combination is ideal for a short precision move followed by a longer transfer stroke. If you require higher force for the same strokes, consider stepping up to the SCT80 series, which provides 2513 N of push per section at 0.5 MPa. For a direct replacement, match the 63 mm bore, both the 75 mm and 450 mm section strokes, PT1/4 ports, and the integrated magnet sensor option. Because the second stroke section is long at 450 mm, ensure the rod is externally guided or the load is supported to prevent side-loading and rod deflection during full extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 450 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 SCT63X75X450S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm (section one extended), 450 mm (section two extended), and 525 mm (both sections extended, which is the total travel).
Yes, it consolidates two different stroke actions into one integrated unit. To be a direct replacement, the alternative setup must match the 63 mm bore, the exact 75 mm and 450 mm stroke requirements, PT1/4 porting, and the need for magnetic piston sensing. It uses a basic mount but can be fitted with FA, FB, CA, CB, or LB mounting accessories.
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