Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X90X115S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X90X115S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 90mm and 115mm give 4 controllable stop positions across a 205mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 190 mm
- Stroke 2115 mm
- Total travel205 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X90X115S
The SCT50X90X115S is a tandem multi-position pneumatic cylinder that delivers four distinct, repeatable rod positions without external stops. By pressurising the two 50 mm bore sections independently or together, the rod locates precisely at 0 mm (fully retracted), 90 mm, 115 mm, or the full combined travel of 205 mm. Each actuated section generates a push force of 982 N at 0.5 MPa, rising to 1767 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG solid-state and reed sensors to clamp directly onto the tie-rod barrel for end-of-stroke or intermediate position confirmation. The 20 mm diameter piston rod and 21 mm adjustable air cushion at each end-section ensure smooth deceleration, while the PT1/4 ports and M16x1.5 rod thread simplify pneumatic connections. The body length A is 243 mm plus the combined stroke.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X90X115S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X90X115S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 90 / 115 mm |
| Total travel | 205 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) | 90 mm |
| P2 (section 2) | 115 mm |
| P3 (both extended) | 205 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 SCT50X90X115S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×90 | Stroke 1 (section 1) in mm. |
| ×115 | 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 SCT50X90X115S Is Used
Two-Stage Diverter Gate
Operates a conveyor gate with four positions: closed, partial divert to lane A (90 mm), partial divert to lane B (115 mm), and full bypass (205 mm), all controlled by two solenoid valves.
Multi-Depth Pressing
Provides two distinct pressing depths in a single cycle. The first section extends 90 mm for a pre-form operation, and the second section adds 115 mm for the final form, with the magnet confirming each stage.
Sequential Part Staging
Indexes a workpiece through four stations on an assembly fixture. The rod advances to 90 mm for drilling, 115 mm for tapping, and the full 205 mm for part ejection, using sensors to verify each discrete stop.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X90X115S the Right Cylinder?
Choose the SCT50X90X115S when a single actuator must index a load to four fixed positions, eliminating the complexity of two separate cylinders and a mounting bracket. The 90 mm and 115 mm strokes provide a 25 mm differential, useful for applications needing a short primary advance and a slightly longer secondary step. If the per-section push force of 982 N at 0.5 MPa is insufficient, stepping up to the 63 mm bore SCT delivers 1559 N per section; for a lighter, more compact solution, the 40 mm bore provides 628 N. Direct replacement requires matching the 50 mm bore, both 90 mm and 115 mm strokes, PT port thread, and the -S magnet option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 90 + 115 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 SCT50X90X115S FAQ
This tandem cylinder provides 4 discrete mechanical stops. The rod positions are 0 mm (fully retracted), 90 mm (first section extended), 115 mm (second section extended), and 205 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, it is designed to replace a two-cylinder setup for multi-position tasks, saving space and simplifying plumbing. To be a direct drop-in replacement, the substitute must be an AirTAC SCT with a 50 mm bore, 90 mm and 115 mm strokes, PT ports, and the -S magnet option for your existing sensors.
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