Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 120mm give 4 controllable stop positions across a 160mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 140 mm
- Stroke 2120 mm
- Total travel160 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120S
The AirTAC SCT50X40X120S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions from two independent piston sections on a common 20 mm rod. With strokes of 40 mm and 120 mm, the reachable stops are 0 mm (fully retracted), 40 mm, 120 mm, and the total travel of 160 mm when both sections are pressurized. Each section generates 982 N of push force at 0.5 MPa, rising to 1767 N at the maximum operating pressure of 0.9 MPa, making it suitable for multi-step clamping or sorting tasks.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position confirmation at every stop. The cylinder body has an overall A-length of 243 mm and uses PT1/4 ports with an adjustable pneumatic cushion of 21 mm at each end to manage end-of-stroke impact. It operates on standard filtered air from 0.15 to 1.0 MPa within a -20 to +70 °C range.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 40 / 120 mm |
| Total travel | 160 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) | 40 mm |
| P2 (section 2) | 120 mm |
| P3 (both extended) | 160 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 SCT50X40X120S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×120 | 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 SCT50X40X120S Is Used
Two-Stage Part Diverter
Use the four discrete positions (0, 40, 120, 160 mm) to route parts to one of three conveyor lanes. Retract to clear, extend to 40 mm for lane one, 120 mm for lane two, or full 160 mm stroke for lane three.
Multi-Depth Pressing
Achieve a light touch at 40 mm for component location, then drive to 120 mm for an initial forming step, and finally to 160 mm for full-depth insertion, all with a single compact tandem cylinder.
Sensor-Monitored Gate Control
The built-in magnet allows CMSG/DMSG sensors to verify each of the four gate positions. Command 40 mm for a low-flow bypass, 120 mm for a main channel, and 160 mm for a full-open flush cycle.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X120S the Right Cylinder?
Select the SCT50X40X120S when your application requires four distinct mechanical stops without the complexity of servo control or multiple separate actuators. The 40 mm and 120 mm section strokes provide asymmetric positioning ideal for a short pre-load step followed by a longer working stroke. If higher force is needed, stepping up to the 63 mm bore SCT63 series provides 1559 N of push per section at 0.5 MPa. For a direct replacement, match the 50 mm bore, both the 40 mm and 120 mm strokes, PT port thread, basic mounting, and the -S magnet option to ensure sensor compatibility. Because the total travel reaches 160 mm, ensure the guided load is aligned with the rod axis to prevent side-load induced bending on the 20 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 120 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 SCT50X40X120S FAQ
It provides four distinct mechanical stop positions because the two section strokes are different (40 mm and 120 mm). The exact rod positions are 0 mm (fully retracted), 40 mm, 120 mm, and the total combined travel of 160 mm.
Yes, it is designed to do exactly that. One SCT50X40X120S replaces two standard SC50 cylinders and their mounting hardware, saving space and simplifying the pneumatic circuit. Ensure the replacement matches the 50 mm bore, both the 40 mm and 120 mm strokes, PT ports, and the -S magnet option if you need sensor feedback.
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