Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X175S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X175S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 175mm give 4 controllable stop positions across a 250mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 175 mm
- Stroke 2175 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X175S
The SCT63X75X175S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions: fully retracted (0 mm), 75 mm, 175 mm, and the total extended travel of 250 mm. Each 63 mm bore piston section provides a push force of 1559 N at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa, making it a robust choice for sequenced clamping or sorting tasks.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for precise end-of-stroke or intermediate position feedback. The cylinder uses a 20 mm rod with M16x1.5 threads, PT1/4 ports, and a 28 mm adjustable air cushion in each section to decelerate the load smoothly at every stop.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X175S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X175S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 75 / 175 mm |
| Total travel | 250 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) | 175 mm |
| P3 (both extended) | 250 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 SCT63X75X175S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×75 | 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 SCT63X75X175S Is Used
Multi-Stop Diverter Gates
Actuates a conveyor gate to three distinct positions—home, partial divert, and full divert—using the 0, 75, and 250 mm stops to route packages to separate lanes.
Two-Depth Press Operations
Provides a light contact position at 75 mm for alignment and a full pressing depth at 250 mm total travel, with the 175 mm stop serving as a safety intermediate step.
Sequenced Clamping Fixtures
Clamps a part loosely at 175 mm for adjustment, then fully secures it at 250 mm. The integrated magnetic sensors confirm each discrete position before the next machining step begins.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X175S the Right Cylinder?
Select this SCT configuration when your process requires a three-step sequence from a single actuator, such as a diverter gate that needs to stop at two distinct intermediate points before full extension. The 75 mm and 175 mm strokes create a non-symmetrical position set that is difficult to replicate with external hard stops on a standard cylinder. If higher force is needed, stepping up to the 80 mm bore provides 2513 N of push per section at the same 0.5 MPa pressure.
For a direct replacement, match the 63 mm bore, both the 75 mm and 175 mm strokes, PT port thread, and the integrated magnet sensor option. The basic mounting style requires the machine frame to support the cylinder body directly, so verify that the A-length of 249 mm plus the 250 mm total stroke fits your available space.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 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 SCT63X75X175S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm (first section extended), 175 mm (second section extended), and 250 mm (both sections extended, total travel). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, it often can. The SCT63X75X175S consolidates two 63 mm bore strokes into one tie-rod body, saving mounting space and simplifying pneumatic plumbing. Ensure the replacement matches the 75 mm and 175 mm strokes, the PT1/4 ports, and the integrated magnet if you are using electronic position sensors.
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