Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X80S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X80S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 80mm give 4 controllable stop positions across a 130mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 280 mm
- Total travel130 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X80S
The SCT40X50X80S is a double-acting multi-position tandem cylinder that provides four fixed rod positions: fully retracted (0 mm), 50 mm, 80 mm, and the combined total travel of 130 mm. Each 40 mm bore section generates 628 N of push force and 528 N of pull force at 0.5 MPa, giving you predictable thrust for multi-stop material handling tasks without complex servo controls.
This model includes a built-in magnet (suffix -S), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the tie-rod barrel for end-of-stroke or intermediate position confirmation. The 16 mm diameter rod and 21 mm adjustable air cushion at each section ensure smooth deceleration, while the compact 235 mm body length (A dimension) simplifies machine integration.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X80S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X80S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 80 mm |
| Total travel | 130 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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) | 80 mm |
| P3 (both extended) | 130 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCT40X50X80S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT40X50X80S Is Used
Four-Position Diverter Gate
Actuate a chute or gate to four distinct angles—closed, low-flow, medium-flow, and full-open—using simple pneumatic valves to pressurize each cylinder section independently or together.
Multi-Depth Pressing or Staking
Perform a two-stage pressing operation: advance to 50 mm for a pre-load position, then pressurize the second section to extend to 80 mm or the full 130 mm for final forming, all with consistent 628 N force per stage.
Staged Part Transfer
Move a workpiece through four fixed stations on an inline transfer line. The 0, 50, 80, and 130 mm positions align precisely with each nest, controlled by a simple manifold of 5/2-way valves.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X80S the Right Cylinder?
Choose the SCT40X50X80S when your process needs four distinct mechanical stops from a single pneumatic unit, eliminating the cost and plumbing of two separate cylinders with external hard stops. If your application demands higher force, consider stepping up to the 50 mm bore SCT50X50X80, which offers 982 N of push per section at 0.5 MPa. For a direct replacement, match the 40 mm bore, both strokes (50 mm and 80 mm), PT port thread, basic mounting, and the -S magnet option.
With a combined stroke of 130 mm, rod deflection is minimal under axial loads, but if you are pushing an off-center load, ensure the tooling is guided to protect the 16 mm rod and bearing from side wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 80 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 SCT40X50X80S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 50 mm (first section extended), 80 mm (second section extended), and 130 mm (both sections extended). The positions are fixed by the internal piston strokes and are not infinitely adjustable.
Yes, if your sequence requires two fixed strokes from a common rod axis. The SCT40X50X80S integrates both 50 mm and 80 mm strokes into a single tie-rod body, reducing mounting hardware and ensuring coaxial alignment. Ensure your replacement matches the PT ports, basic mounting, and the -S magnet if you use sensors.
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