Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X38X38S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X38X38S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 38mm and 38mm give 3 controllable stop positions across a 76mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 138 mm
- Stroke 238 mm
- Total travel76 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X38X38S
The SCT50X38X38S is a tandem multi-position cylinder delivering three fixed rod positions: fully retracted, 38 mm, and 76 mm total travel. Each 50 mm bore section provides 982 N of push force at 0.5 MPa, making it suitable for sorting or diverting tasks that require repeatable, mid-stroke stopping without complex controls.
A built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for position confirmation. The cylinder uses a 20 mm diameter rod, PT1/4 ports, and a 21 mm adjustable air cushion at each end to manage deceleration. Its body length A is 243 mm.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X38X38S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X38X38S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 38 / 38 mm |
| Total travel | 76 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 38 mm |
| P2 (both extended) | 76 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 SCT50X38X38S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×38 | Stroke 1 (section 1) in mm. |
| ×38 | 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 SCT50X38X38S Is Used
3-Position Diverter Gate
Actuates a gate to three fixed points—closed, partial bypass, and full open—for routing packages on a conveyor line.
Multi-Stop Part Feeding
Advances components to a pick point in two precise increments (38 mm and 76 mm) for a two-stage assembly process.
Dual-Depth Pressing
Provides two controlled pressing depths from a single retracted home position for inserting components to different levels.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X38X38S the Right Cylinder?
Choose the SCT when an application needs a defined intermediate stop without the cost and plumbing of two separate cylinders and external stops. With both strokes equal at 38 mm, this model provides three distinct positions. If more force is needed, stepping up to the 63 mm bore offers 1559 N push per section at 0.5 MPa. For a direct replacement, match the 50 mm bore, both 38 mm strokes, PT port thread, basic mounting, and the -S magnet option.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 38 + 38 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 SCT50X38X38S FAQ
It provides 3 discrete mechanical stop positions: 0 mm (fully retracted), 38 mm (first section extended), and 76 mm (both sections extended). The stops are fixed by the cylinder's internal structure, not programmable.
No. Like any standard pneumatic cylinder, it will drift if pressure is lost or a valve center is closed. To hold a load at the intermediate position without live pressure, you must add an external rod lock or a pilot-operated check valve.
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Related AirTAC SCT Multi-Position Cylinders
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