Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X100S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X100S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 125mm and 100mm give 4 controllable stop positions across a 225mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1125 mm
- Stroke 2100 mm
- Total travel225 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X100S
The SCT63X125X100S is a double-acting multi-position cylinder that delivers four fixed rod positions from a single compact body: fully retracted (0 mm), 125 mm, 100 mm, and the combined 225 mm total travel. Each piston section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at the 0.9 MPa maximum operating pressure, driven through a 20 mm diameter piston rod.
This model includes a built-in magnet, allowing easy attachment of CMSG or DMSG sensors directly to the tie-rod barrel for reliable end-of-stroke or intermediate position sensing. With a 28 mm air cushion at each end and a body length of 249 mm, it provides smooth deceleration for the 30-800 mm/s speed range, making it a genuine AirTAC solution for sequenced pneumatic tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X100S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X100S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 125 / 100 mm |
| Total travel | 225 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) | 100 mm |
| P3 (both extended) | 225 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 SCT63X125X100S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×125 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT63X125X100S Is Used
Two-Depth Part Sorting
Use the four discrete positions (0, 125, 100, 225 mm) to divert parts to separate conveyor lanes based on height or profile, controlled by pressurizing the appropriate cylinder sections.
Sequential Clamping Station
Apply a 100 mm initial clamp stroke followed by a 125 mm high-force locking stroke on a fixture, achieving two distinct clamping pressures from a single actuator.
Multi-Stop Feeding Mechanism
Index material precisely to 125 mm and 225 mm positions in a stamping or cutting die, with the built-in magnet confirming each stop via a DMSG solid-state sensor.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X125X100S the Right Cylinder?
Choose the SCT tandem cylinder when your application needs up to four discrete mechanical stops without the complexity of two independent cylinders and external brackets. This 63 mm bore unit is a space-saving alternative to pairing two SC63 cylinders, with the 125 mm and 100 mm strokes offering asymmetric positioning for processes like two-depth pressing or part transfer. If your force requirement is lower, the 50 mm bore SCT provides 982 N of push per section at 0.5 MPa; for higher thrust, step up to the 80 mm bore with 2513 N.
For a direct replacement, match the 63 mm bore, both the 125 mm and 100 mm strokes, the PT port thread, and the built-in magnet (-S suffix). The basic mounting configuration accepts standard SCT foot (LB) or flange (FA/FB) accessories. Given the 125 mm stroke on the first section, ensure the rod is adequately guided if side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 125 + 100 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 SCT63X125X100S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 125 mm (first section extended), 100 mm (second section extended), and 225 mm (both sections extended, total travel). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates two piston sections on a single common rod, guaranteeing a fixed spatial relationship between the 125 mm and 100 mm strokes. This eliminates the need to synchronize two separate cylinders and their mounting hardware, saving space and simplifying the pneumatic circuit while still delivering 1559 N of push force per section at 0.5 MPa.
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