Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 50mm give 3 controllable stop positions across a 100mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 150 mm
- Stroke 250 mm
- Total travel100 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X50S
The SCT50X50X50S is a genuine AirTAC multi-position tandem cylinder that delivers three fixed, repeatable rod stops at 0 mm, 50 mm, and 100 mm by pressurising its two 50 mm stroke sections. Each 50 mm bore section generates 982 N of push force at 0.5 MPa, rising to 1767 N at the maximum operating pressure of 0.9 MPa, driven through a 20 mm diameter piston rod.
The built-in magnet (denoted by the -S suffix) allows direct mounting of CMSG, DMSG, or EMSG solid-state sensors along the tie-rod barrel for end-of-stroke or mid-position sensing without external brackets. With PT1/4 ports, a 21 mm air cushion, and a 243 mm body length, this cylinder suits compact multi-stop tasks where sensor feedback is essential.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 50 / 50 mm |
| Total travel | 100 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) | 50 mm |
| P2 (both extended) | 100 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 SCT50X50X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT50X50X50S Is Used
3-Way Part Sorting
Directs components to three distinct conveyor lanes by stopping the rod at 0, 50, and 100 mm, using the magnet to confirm each position to the PLC.
Dual-Depth Pressing
Applies a light pre-press at the 50 mm stop and a full-depth press at the 100 mm total travel, with sensor verification at each depth.
Multi-Stop Gate Control
Operates a three-position gate (closed, half-open, fully open) for material dosing, with the -S magnet providing contactless position feedback.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X50S the Right Cylinder?
Choose this 3-position SCT when a single actuator must reliably stop at a home, mid, and extended position for sorting or diverting, eliminating the cost and complexity of two separate cylinders and a mounting bracket. For higher thrust, stepping up to the 63 mm bore provides 1559 N of push force per section at 0.5 MPa. A direct replacement must match the 50 mm bore, both 50 mm strokes, the PT port thread, and the integrated magnet (-S) to preserve sensor functionality. If either stroke exceeds 300 mm, evaluate the rod bearing for side-loads and add an external guide.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 50 + 50 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 SCT50X50X50S FAQ
Because both piston sections have an equal 50 mm stroke, the cylinder provides 3 distinct mechanical stops: 0 mm (fully retracted), 50 mm (first section extended), and 100 mm (both sections extended, total travel).
You can, but an SCT integrates two strokes into one compact tie-rod body, giving you hard, repeatable stops without the alignment drift and bulk of external shock absorbers or brackets. The -S suffix also adds a built-in magnet for clean sensor mounting, which is harder to achieve with a DIY stop setup.
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