Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X70S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X70S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 70mm give 4 controllable stop positions across a 110mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 140 mm
- Stroke 270 mm
- Total travel110 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X70S
The AirTAC SCT50X40X70S is a double-acting multi-position tandem cylinder that provides four distinct mechanical stops along its stroke: 0 mm (fully retracted), 40 mm, 70 mm, and the combined total travel of 110 mm. Each 50 mm bore piston 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, making it suitable for applications requiring intermediate positioning with consistent pneumatic power.
This model features a built-in magnet (-S suffix) running the length of the barrel, allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors for precise position feedback at any of the four stops. The cylinder uses a 20 mm diameter piston rod with an M16x1.5 male thread, PT1/4 ports, and has a 21 mm adjustable air cushion in each end cap. Its tie-rod construction body length A is 243 mm, and it operates on standard filtered air from 0.15 to 1.0 MPa.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X70S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X70S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 40 / 70 mm |
| Total travel | 110 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) | 70 mm |
| P3 (both extended) | 110 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 SCT50X40X70S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×70 | 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 SCT50X40X70S Is Used
Four-Position Sorting Gate
Direct packages or components to four different conveyor lanes by pressurizing the cylinder sections independently. The discrete 0, 40, 70, and 110 mm stops provide reliable, repeatable gate angles without the need for servo controls.
Two-Depth Pressing Station
Perform a two-stage pressing or insertion operation. The first advance to 40 mm can be a low-force pre-insertion, followed by a full 110 mm stroke for final seating, all controlled by a single tandem cylinder with sensor confirmation at each step.
Multi-Stop Part Staging
Use the four physical stops to stage parts at precise locations along a linear transfer line. The built-in magnet and sensors verify arrival at the 40 mm, 70 mm, and 110 mm positions before the next machine cycle begins.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X70S the Right Cylinder?
Select the SCT50X40X70S when your application requires a compact, single-cylinder solution for four fixed positions, eliminating the complexity and plumbing of two separate cylinders with external stops. With a 40 mm and 70 mm stroke pair, it is well-suited for sorting gates or two-stage feeding mechanisms. If higher force is needed, consider stepping up to the 63 mm bore SCT63X40X70, which provides 1559 N of push force per section at 0.5 MPa. For a lower force requirement, the 40 mm bore SCT40X40X70 offers 628 N per section.
This cylinder is a direct replacement only for another AirTAC SCT50 with identical 40 mm and 70 mm strokes, PT ports, and the -S magnet option. Since the longer combined stroke reaches 110 mm, ensure the rod is adequately guided if significant side loads are present, as the 20 mm rod is designed primarily for axial thrust.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 70 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 SCT50X40X70S FAQ
This model provides 4 discrete mechanical stop positions. The rod can be reliably positioned at 0 mm (fully retracted), 40 mm (first section extended), 70 mm (second section extended), and 110 mm (both sections extended for total travel). These are fixed, hard stops, not infinitely variable positions.
The force is generated per actuated piston section. A single 50 mm bore section produces a theoretical push force of 982 N at 0.5 MPa and 1767 N at 0.9 MPa. The pull force for one section is 825 N at 0.5 MPa. The two sections do not add their force together for a combined output; the force at any stop is the thrust from the active section(s) pushing against the load.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Related AirTAC SCT Multi-Position Cylinders
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