Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X140
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X140 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 70mm and 140mm give 4 controllable stop positions across a 210mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 170 mm
- Stroke 2140 mm
- Total travel210 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X140
The SCT50X70X140 is a tandem multi-position pneumatic cylinder that delivers four distinct, repeatable rod stops without external hardware. By pressurising one or both of its 50 mm bore sections, the rod extends to 0 mm (retracted), 70 mm, 140 mm, or the full combined travel of 210 mm. Each actuated section generates 982 N of push force at 0.5 MPa, making it suitable for sequenced clamping or sorting tasks.
Built on a rugged tie-rod design with a 20 mm diameter piston rod and M16x1.5 rod thread, this cylinder includes an adjustable air cushion (21 mm length) at each end for smooth deceleration. The body length A is 243 mm, and the unit operates on standard 40 µm filtered air from 0.15 to 1.0 MPa. This model is a basic configuration with TPU seals and PT ports, ideal for ambient temperatures from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X140 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X140 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 70 / 140 mm |
| Total travel | 210 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, 21 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) | 70 mm |
| P2 (section 2) | 140 mm |
| P3 (both extended) | 210 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X70X140
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×70 | Stroke 1 (section 1) in mm. |
| ×140 | 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 SCT50X70X140 Is Used
Two-Station Part Diverting
Use the four discrete positions to route parts to two separate conveyor lanes. The 70 mm stroke moves a gate to the first divert position, while the 140 mm stroke sends it to the second, with the full 210 mm extension clearing the main path.
Sequential Clamping
Apply a preliminary clamp at 70 mm extension with lower force, then fully engage the workpiece at 210 mm. The intermediate 140 mm stop can be used for a part-present check before the final high-force clamping stroke.
Multi-Depth Pressing
Achieve two different pressing depths in one cycle. The first section extends to 70 mm for a shallow form, and engaging the second section drives the tool to the full 210 mm depth, eliminating the need for a secondary press station.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X70X140 the Right Cylinder?
This 4-position SCT configuration replaces the complexity of two separate cylinders with external stops, simplifying plumbing and saving space on the machine frame. When selecting, confirm that the 50 mm bore's per-section thrust (982 N push at 0.5 MPa) matches the load at each stop. If you need higher force at a station, stepping up to a 63 mm bore provides 1559 N push per section; for a lighter, more compact design, the 40 mm bore offers 628 N.
For a direct replacement, match the 50 mm bore, both strokes (70 mm and 140 mm), and the PT port thread exactly. This basic model has no mounting brackets, so ensure your existing setup uses the cylinder body directly or order the required FA, FB, CA, CB, or LB mounting kit separately. Since the combined stroke reaches 210 mm, verify that the rod is adequately guided if the load applies significant side force.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 70 + 140 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 SCT50X70X140 FAQ
This model provides four distinct mechanical stops: 0 mm (fully retracted), 70 mm, 140 mm, and the total travel of 210 mm. The positions are achieved by pressurising the first section, the second section, or both simultaneously.
Yes, in applications requiring two fixed extension points. The SCT50X70X140 replaces two SC50 cylinders and their mounting hardware with a single tandem unit, but you must match the 50 mm bore, both strokes (70 and 140 mm), and PT port thread. The force output is 982 N push per section at 0.5 MPa, not a combined force.
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