Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X60X20
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X60X20 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 60mm and 20mm give 4 controllable stop positions across a 80mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 160 mm
- Stroke 220 mm
- Total travel80 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X60X20
The SCT50X60X20 is a double-acting multi-position cylinder that delivers four distinct rod positions from two piston sections on a common rod line. With stroke1 set at 60 mm and stroke2 at 20 mm, the achievable stops are 0 mm (fully retracted), 60 mm, 20 mm, and the total travel of 80 mm. Each 50 mm bore section provides 982 N of push force at 0.5 MPa, making it suitable for tasks requiring two different extension depths without complex servo controls.
This tie-rod cylinder uses a 20 mm diameter rod with M16x1.5 threads and PT1/4 ports. The adjustable air cushion at each end cap is 21 mm long, helping to manage end-of-stroke impact. The body length A(SCT) is 243 mm. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa. Standard TPU seals suit temperatures from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X60X20 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X60X20 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 60 / 20 mm |
| Total travel | 80 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) | 60 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 80 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 SCT50X60X20
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×60 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT50X60X20 Is Used
Two-Stop Diverter Gate
Extend to 20 mm for one lane and 60 mm for a second lane in a sorting conveyor, using simple 5/3 valves to select the active piston section.
Dual-Depth Pressing
Perform a shallow 20 mm pre-compression stroke followed by a full 80 mm insertion stroke, or vice versa, for assembly processes requiring two force levels.
Multi-Level Part Feeding
Advance a workpiece to a 20 mm inspection station, then to a 60 mm rejection chute, all from one cylinder, reducing actuator count and PLC outputs.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X60X20 the Right Cylinder?
Choose the SCT50X60X20 when a single actuator must stop at two distinct extended positions without external hard stops. This tandem unit is more compact and easier to control than two separate cylinders with couplers. If the 982 N push force per section at 0.5 MPa is insufficient, consider stepping up to the 63 mm bore SCT63X60X20, which offers 1559 N per section. For a direct replacement, match the 50 mm bore, both strokes (60 mm and 20 mm), PT thread, and basic mounting. An SCT with a magnet (-S suffix) is required if you plan to use CMSG or DMSG sensors for position feedback.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 60 + 20 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 SCT50X60X20 FAQ
It provides four discrete stop positions: 0 mm (fully retracted), 60 mm (section 1 extended), 20 mm (section 2 extended), and 80 mm (both sections extended). The positions are fixed by the two stroke lengths and are selected by pressurizing the appropriate cylinder sections.
Yes, in many cases. The SCT integrates two piston sections on a single rod line, saving space and eliminating the need for external alignment couplers. Ensure the replacement matches the 50 mm bore, 60 mm and 20 mm strokes, PT port thread, and basic mounting style. The per-section force remains 982 N push at 0.5 MPa, identical to a standard SC50.
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