Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X175S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X175S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 175mm give 4 controllable stop positions across a 300mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1125 mm
- Stroke 2175 mm
- Total travel300 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X175S
The SCT63X125X175S tandem air cylinder delivers four fixed rod positions—0, 125, 175, and 300 mm—by pressurising its two piston sections independently or together. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at 0.9 MPa, making it a robust actuator for multi-step material handling.
This model includes a built-in magnet, allowing CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position confirmation at any of the four stops. The 20 mm rod, M16x1.5 rod thread, and 28 mm air cushion at each end ensure reliable deceleration across the combined 300 mm travel, while the PT1/4 ports keep plumbing straightforward.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X175S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X175S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 125 / 175 mm |
| Total travel | 300 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) | 125 mm |
| P2 (section 2) | 175 mm |
| P3 (both extended) | 300 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 SCT63X125X175S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×175 | 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 SCT63X125X175S Is Used
Two-Depth Pressing
Achieve a shallow 125 mm approach and a full 300 mm pressing depth in one compact assembly, eliminating the need for two separate actuators.
Multi-Stop Sorting Gate
Direct packages to three different conveyor lanes using the retracted, 175 mm, and 300 mm positions for high-speed logistics sorting.
Staged Clamping Fixture
Use the 125 mm position for part loading clearance and the 175 mm stop for initial clamping, with full 300 mm travel for ejection.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X175S the Right Cylinder?
Choose the SCT when your process needs up to four physical stop points without the complexity of servo control or multiple cylinders. This 125+175 mm stroke combination provides asymmetric positions ideal for a two-depth pressing or sorting operation. If you need more force, stepping up to the 80 mm bore provides 2513 N of push per section at 0.5 MPa; for a lighter load, the 50 mm bore delivers 982 N.
For a direct replacement, match the SCT63 bore, the exact 125 mm and 175 mm strokes, PT port thread, and the -S magnet option. Since the total travel reaches 300 mm, ensure the rod is guided externally if the load applies significant side force, to prevent bending and premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 175 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 SCT63X125X175S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 125 mm (first section extended), 175 mm (second section extended), and 300 mm (both sections extended).
The SCT integrates two piston sections on a single rod line, sharing a common mounting footprint. This saves space, reduces plumbing connections, and guarantees the relative position between the two strokes, unlike two independently mounted cylinders.
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