Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 200mm and 50mm give 4 controllable stop positions across a 250mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1200 mm
- Stroke 250 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S
The AirTAC SCT80X200X50S is a double-acting multi-position tandem cylinder that provides four distinct mechanical stops along its stroke. By pressurising the two piston sections independently or together, the rod can be accurately positioned at 0 mm (fully retracted), 50 mm, 200 mm, and the total extended travel of 250 mm. This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors for position feedback without external brackets.
Each piston section generates a push force of 2513 N at 0.5 MPa, scaling up to a robust 4523 N at the maximum operating pressure of 0.9 MPa. The cylinder features a 25 mm diameter hard-chrome plated rod and PT3/8 ports. Its tie-rod construction ensures a rigid body with a base length of 296 mm, and the adjustable pneumatic cushion at each end absorbs energy smoothly, decelerating the 28 mm cushion seal effectively for high-cycle applications.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 200 / 50 mm |
| Total travel | 250 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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, 28 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) | 200 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 250 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×200 | 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 SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S Is Used
3-Stop Sorting Gate
Use the 0, 50, and 250 mm positions to direct packages on a conveyor to three separate lanes. The 50 mm stop provides a precise partial extension for a diverter arm, while full extension sends items to a third destination.
Two-Depth Press Operation
Control a press platen with a light-contact position at 50 mm and a full forming depth at 250 mm. The 200 mm intermediate position allows for part loading, creating a safe, efficient three-step sequence.
Staged Clamping Fixture
Implement a two-stage clamp where the 50 mm stroke applies a low-force pre-clamp, and pressurising both sections to reach 250 mm engages the full 4523 N clamping force, securely holding a workpiece for machining.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S the Right Cylinder?
Select this 4-position SCT model when your application requires a compact actuator to move a load to two intermediate points and a full-extension point, eliminating the complexity and plumbing of two separate cylinders with external stops. The 80 mm bore provides a substantial 2513 N of push force per section at standard plant pressure, making it ideal for medium-to-heavy multi-stop material handling. If your force requirement is lower, consider stepping down to the 63 mm bore (1559 N push at 0.5 MPa) for a lighter, more energy-efficient solution.
For a direct replacement, match the 80 mm bore, both strokes of 200 mm and 50 mm, PT port thread, and the integrated magnet (-S suffix). This basic mounting configuration accepts the full SCT accessory range, including FA/FB flanges, CA/CB devises, or LB feet, should your mounting needs change. With a 200 mm stroke on the primary section, ensure the load is guided to prevent side-loading and rod deflection during extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 200 + 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 SCT80~100 Multi-Position Tandem Cylinder SCT80X200X50S FAQ
This tandem cylinder has four discrete mechanical stops. The rod positions are 0 mm (fully retracted), 50 mm (second section extended), 200 mm (first section extended), and 250 mm (both sections extended for total travel).
The force is generated per actuated piston section, not combined. Each of the two 80 mm bore sections in this model provides 2513 N of push force at 0.5 MPa. The force at a given stop depends on which section is pressurised, not a sum of both.
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