Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X90S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X90S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 90mm give 4 controllable stop positions across a 140mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 150 mm
- Stroke 290 mm
- Total travel140 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X90S
The SCT50X50X90S is a double-acting, multi-position tandem cylinder that delivers four distinct rod positions from two piston sections on a single axis. With strokes of 50 mm and 90 mm, the reachable stops are 0 mm (fully retracted), 50 mm, 90 mm, and the total travel of 140 mm. Each 50 mm bore section provides 982 N of push force at 0.5 MPa, making it a compact alternative to complex servo setups for discrete positioning tasks.
This model includes a built-in magnet (suffix -S), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The 20 mm diameter rod and 21 mm adjustable air cushion at each end manage end-of-stroke impact. The body length A(SCT) is 243 mm, and the per-section thrust rises to 1767 N at the maximum operating pressure of 0.9 MPa.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X90S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X90S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 50 / 90 mm |
| Total travel | 140 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) | 50 mm |
| P2 (section 2) | 90 mm |
| P3 (both extended) | 140 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 SCT50X50X90S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×90 | 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 SCT50X50X90S Is Used
Two-Stage Diverter Gate
Uses the 50 mm and 90 mm stops to route packages to three separate conveyor lanes from one infeed, controlled entirely by pneumatic valves.
Multi-Depth Pressing
Provides two distinct pressing depths (50 mm and 140 mm total travel) for a forming operation, eliminating the need for manual stroke adjustment.
Sequential Part Feeding
Advances components in two precise increments (50 mm then an additional 90 mm) for a two-step assembly or inspection station.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X50X90S the Right Cylinder?
Choose the SCT when your application needs two or three intermediate stop positions without the cost of two independent cylinders and external hard stops. This 50 mm bore unit is a good fit when the 40 mm bore’s 628 N push is insufficient, but the 63 mm bore’s 1559 N is excessive for the load. Always match the replacement part by confirming the bore (50 mm), both section strokes (50 mm and 90 mm), the PT port thread, the basic mounting style, and the built-in magnet (-S). If a section stroke exceeds 300 mm, evaluate the rod for side loading and consider an external guide to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 90 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 SCT50X50X90S FAQ
It provides four discrete rod positions: 0 mm (fully retracted), 50 mm (first section extended), 90 mm (second section extended), and 140 mm (both sections extended for full travel). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, in many cases. A single SCT50X50X90S with a built-in magnet can replace two SC50 cylinders and their mounting hardware for applications requiring three or four fixed positions. Ensure the replacement matches the 50 mm bore, both 50 mm and 90 mm strokes, PT ports, basic mount, and the -S magnet option.
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