Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X15S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X15S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 15mm give 4 controllable stop positions across a 90mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 175 mm
- Stroke 215 mm
- Total travel90 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X15S
The SCT63X75X15S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions: fully retracted (0 mm), 15 mm, 75 mm, and the full combined travel of 90 mm. Each piston section generates a push force of 1559 N at 0.5 MPa, giving this 63 mm bore unit the muscle for sorting and diverting tasks where three or four distinct end-points are needed along a single linear axis.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. The 20 mm diameter rod, PT1/4 ports, and a 28 mm air cushion at each end provide robust guidance and adjustable end-of-stroke deceleration. Its body length A(SCT) is a compact 249 mm.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X15S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X15S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 75 / 15 mm |
| Total travel | 90 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) | 15 mm |
| P3 (both extended) | 90 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 SCT63X75X15S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×15 | 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 SCT63X75X15S Is Used
3-Way Part Diverting
Use the 0, 15, and 90 mm positions to direct parts from a single infeed lane into three separate outfeed lanes, simplifying conveyor routing with one compact actuator.
Two-Depth Insertion
The 15 mm and 90 mm extended positions allow a tool to install components at two different depths in sequence, such as pressing a bearing and then a seal into a housing.
Multi-Stop Gate Control
Control a material gate with four set points: fully closed (0 mm), a trickle-feed gap (15 mm), a main flow opening (75 mm), and a full-open flush position (90 mm).
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X15S the Right Cylinder?
Choose the SCT tandem cylinder when your process needs multiple positive stops without the complexity of two separate cylinders and a coupler. This 63 mm bore unit, with a per-section push force of 1559 N at 0.5 MPa, is ideal for mid-force applications. If your load is lighter, stepping down to a 50 mm bore (982 N push) can reduce air consumption; for heavier work, the 80 mm bore provides 2513 N of push force. The -S magnet option is factory-installed, ensuring perfect alignment for sensor systems.
To replace this cylinder, match the 63 mm bore, both the 75 mm and 15 mm strokes, PT thread, and the basic mounting style. The 75 mm stroke section is short enough that rod buckling is not a primary concern under normal axial loads, but always ensure the load is guided if there is any significant side force.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 15 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 SCT63X75X15S FAQ
It provides four distinct mechanical stops: 0 mm (fully retracted), 15 mm, 75 mm, and the total travel of 90 mm. These are achieved by pressurising the first section, the second section, or both simultaneously.
The -S suffix equips the piston with a magnet designed for AirTAC's CMSG (reed) and DMSG/EMSG (solid-state) sensors, which clamp directly onto the cylinder's tie rods. It is not a universal mount for all sensor brands.
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