Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X25S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 25mm give 4 controllable stop positions across a 105mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 180 mm
- Stroke 225 mm
- Total travel105 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X25S
The SCT63X80X25S is a double-acting tandem cylinder that delivers four fixed rod positions from two independent piston sections. With strokes of 80 mm and 25 mm, the rod can be precisely located at 0 mm (fully retracted), 80 mm, 25 mm, or the combined total travel of 105 mm by pressurising the sections individually or together. This specific model includes a built-in magnet, allowing direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke or intermediate position detection.
Built on a durable tie-rod construction with a 20 mm rod and PT1/4 ports, this cylinder provides a push force of 1559 N per actuated section at 0.5 MPa. The 28 mm air cushion in each section decelerates the piston smoothly, reducing end-cap impact and noise. A body length of 249 mm makes it a compact solution for machines needing a simple, pneumatic 4-position sequence without complex servo controls.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X25S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 80 / 25 mm |
| Total travel | 105 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) | 80 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 105 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 SCT63X80X25S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT63X80X25S Is Used
Two-Stage Sorting Gate
Use the 80 mm stroke to divert a package from a main conveyor and the 25 mm stroke for a secondary, precise alignment push into a specific lane, all from one compact actuator.
Multi-Level Part Staging
Position a workpiece at a 25 mm inspection height, an 80 mm assembly height, or a 105 mm transfer height, using the cylinder's four discrete stops for a sequential three-step process.
Dual-Depth Pressing or Staking
Achieve a primary forming depth at 105 mm total travel, then retract to a secondary, lighter staking position at 25 mm extension, with the magnetic sensors confirming each distinct location.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X80X25S the Right Cylinder?
Select the SCT63X80X25S when your application requires four distinct, repeatable stop points along a single linear axis, eliminating the cost and complexity of mounting two separate cylinders with external stops. The 63 mm bore provides a solid 1559 N of push force per section at 0.5 MPa; if your load demands more thrust, stepping up to an 80 mm bore offers 2513 N per section at the same pressure. For lighter, faster-cycling loads, a 50 mm bore SCT delivers 982 N. As a direct replacement, ensure the new unit matches the 63 mm bore, both the 80 mm and 25 mm strokes, PT port threads, and the -S magnet option for sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 25 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 SCT63X80X25S FAQ
This 4-position cylinder stops at 0 mm (fully retracted), 80 mm (section 1 extended), 25 mm (section 2 extended), and 105 mm (both sections extended). The positions are fixed and discrete, selected by routing air pressure to the appropriate cylinder ports.
Yes, it is designed to do exactly that. The SCT63X80X25S integrates an 80 mm and a 25 mm stroke into one tandem body, providing the same four discrete positions in a single, aligned unit. For a direct replacement, match the 63 mm bore, both strokes, the -S magnet feature for sensors, and PT port threads.
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