Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X10
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X10 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 10mm give 4 controllable stop positions across a 35mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 125 mm
- Stroke 210 mm
- Total travel35 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X10
The SCT63X25X10 tandem cylinder delivers four fixed rod positions—0 mm, 25 mm, 10 mm, and the full 35 mm travel—by pressurising its two piston sections independently. 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 suitable for compact multi-stop fixtures.
Built on a durable tie-rod design with a 20 mm rod and M16x1.5 rod thread, this unit includes a 28 mm adjustable air cushion on each section for end-of-stroke deceleration. The PT1/4 ports and standard TPU seals suit filtered-air systems operating between -20 and +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X10 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X10 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 25 / 10 mm |
| Total travel | 35 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) | 25 mm |
| P2 (section 2) | 10 mm |
| P3 (both extended) | 35 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 SCT63X25X10
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×10 | 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 SCT63X25X10 Is Used
Two-Depth Press Insertion
Actuate the 10 mm stroke for a shallow pilot press, then engage the 25 mm section for full-depth insertion, all with one compact tandem cylinder.
Compact Part Sorting
Use the four discrete positions (0, 10, 25, 35 mm) to divert small components into three separate chutes on a high-speed assembly line.
Multi-Stop Glue Dispensing
Position a dispensing nozzle at three different heights above a workpiece—retracted, 10 mm, and 25 mm—to apply beads at varying offsets.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X25X10 the Right Cylinder?
Choose the SCT63X25X10 when a process requires four distinct mechanical stop positions without the complexity of two separate cylinders and external hard stops. The discrete 25 mm and 10 mm strokes allow precise, repeatable part placement in tight spaces. If you need higher force in the same bore family, the SCT80 series provides 2513 N of push per section at 0.5 MPa.
For a drop-in replacement, match the 63 mm bore, both the 25 mm and 10 mm strokes, PT port thread, and basic mounting configuration. Since the 25 mm stroke is short, rod bending under side load is minimal, but always align the load axially to maximise seal life.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 10 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 SCT63X25X10 FAQ
It provides four discrete mechanical stops. The rod positions are 0 mm (fully retracted), 25 mm (first section extended), 10 mm (second section extended), and 35 mm (both sections extended, total travel).
Yes, it is a direct functional replacement when you need the specific 25 mm and 10 mm discrete stops. Ensure the replacement matches the 63 mm bore, both stroke lengths, PT1/4 ports, and basic mounting. The tandem design eliminates the need for external brackets and alignment of two separate units.
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