Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 75mm give 3 controllable stop positions across a 150mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 175 mm
- Stroke 275 mm
- Total travel150 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75S
The SCT63X75X75S is a double-acting multi-position tandem cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stroke (75 mm), and full extension (150 mm). By pressurising the two 75 mm stroke sections independently or together, it provides repeatable mechanical stops without external hardware. Each piston section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The 63 mm bore uses a 20 mm diameter piston rod with M16x1.5 threads and PT1/4 ports. With a body length of 249 mm and 28 mm of adjustable air cushion at each end, it fits compact multi-stop applications where sensor confirmation of the intermediate position is required.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 75 / 75 mm |
| Total travel | 150 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) | 75 mm |
| P2 (both extended) | 150 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 SCT63X75X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT63X75X75S Is Used
3-Position Sorting Gate
Directs packages onto three separate conveyor lanes by stopping the rod at 0, 75, or 150 mm. The magnet sensor confirms the gate is clear before the next cycle starts.
Two-Depth Clamping Fixture
Applies a light clamp at the 75 mm mid-position for alignment and full clamping force at 150 mm. The three discrete stops prevent operator error in manual load stations.
Multi-Stop Drilling Jig
Indexes a workpiece to two different drill depths in one cycle. The cylinder's rigid tandem design and 20 mm rod resist deflection, maintaining hole position accuracy.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X75S the Right Cylinder?
Choose the SCT63X75X75S when your process needs three distinct, hard-stopped positions with sensor feedback, replacing complex setups that would otherwise require two standard cylinders and external brackets. If your force requirement is lower, the 50 mm bore SCT offers 982 N of push per section; for heavier payloads, step up to the 80 mm bore which provides 2513 N per section at the same 0.5 MPa. The built-in magnet eliminates the need for external flag sensors or cumbersome mounting rails.
For a drop-in replacement, match the 63 mm bore, both 75 mm section strokes, PT port thread, and the -S magnet option. The basic mounting configuration means this cylinder is supplied without brackets, so you must reuse or order FA, FB, CA, CB, or LB mounts separately if your machine requires them.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 75 + 75 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 SCT63X75X75S FAQ
This model provides 3 distinct mechanical stop positions because both stroke sections are equal at 75 mm. The rod stops at 0 mm (fully retracted), 75 mm (one section extended), and 150 mm (both sections extended, total travel).
Yes, if your sequence requires fixed stops at 0, 75, and 150 mm. The SCT tandem cylinder replaces two individual cylinders plus their mounting hardware and alignment, but remember the force output is 1559 N per actuated section, not a combined total. You must match the bore, both 75 mm strokes, PT port thread, and the -S magnet option for a compatible replacement.
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