Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X540X540S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X540X540S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 540mm and 540mm give 3 controllable stop positions across a 1080mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1540 mm
- Stroke 2540 mm
- Total travel1080 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X540X540S
The SCT100X540X540S is a double-acting, multi-position tandem cylinder that provides three distinct, repeatable rod positions: 0 mm (fully retracted), 540 mm, and 1080 mm (total travel). Each of its two piston sections generates a powerful 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty material handling tasks requiring long, discrete strokes.
This model features a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for precise end-of-stroke and mid-stroke position feedback. The 100 mm bore cylinder uses a 25 mm diameter piston rod with an M20x1.5 thread and PT1/2 ports. Both 540 mm section strokes are non-standard, made-to-order lengths, and the total body length A(SCT) is 308 mm plus the extended stroke contributions.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X540X540S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X540X540S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 540 / 540 mm |
| Total travel | 1080 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/2 |
| 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, 29 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). This configuration exceeds the 500 mm standard section stroke, so it is a non-standard / made-to-order build. Confirm against the product label before installation. Thread options: PT (standard) / G.
Stop Positions (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 540 mm |
| P2 (both extended) | 1080 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCT100X540X540S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×540 | Stroke 1 (section 1) in mm. |
| ×540 | 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 SCT100X540X540S Is Used
Long-Stroke Diverter Gate
Positions a heavy diverter gate on a conveyor line to three locations—home, mid-divert, and full-divert—at 0, 540, and 1080 mm, handling large packages with the cylinder's high force output.
Multi-Stop Heavy Part Transfer
Shifts large fabricated parts between three processing stations in a linear transfer system, using the discrete 540 mm increments for precise, repeatable positioning without over-travel.
Two-Depth Bulkhead Press
Provides two distinct pressing depths for compacting bulk materials into large containers, using the 540 mm and 1080 mm extended positions to achieve different compaction ratios in one cycle.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X540X540S the Right Cylinder?
Select the SCT100X540X540S when your application demands two long, fixed intermediate stop positions without the complexity of servo controls. This tandem cylinder is a more compact and synchronized alternative to coupling two separate SC100 cylinders or using external hard stops. If the 3927 N per-section force at 0.5 MPa is more than required, consider stepping down to an SCT80 series, which provides 2513 N of push per section, to reduce air consumption and physical footprint.
As a direct replacement, ensure the alternative matches the 100 mm bore, both 540 mm strokes, PT1/2 port thread, and the built-in magnet (-S). Given the extended stroke length of 540 mm per section, carefully evaluate the application for side-loading. For strokes exceeding 300 mm, it is critical to guide the rod externally or ensure the load is perfectly axial to prevent rod bending and premature seal wear.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 540 + 540 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 SCT100X540X540S FAQ
This model provides 3 distinct rod positions because both stroke sections are equal at 540 mm. The positions are 0 mm (fully retracted), 540 mm (first section extended), and 1080 mm (both sections extended for total travel).
Each actuated piston section delivers a push force of 3927 N at 0.5 MPa. The two sections do not add their force together to move a single load; the force remains constant per section, and the multi-position function is achieved by pressurizing sections independently or simultaneously to reach the discrete stops.
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