
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 50mm give 3 controllable stop positions across a 100mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
The SCT100X50X50S is a tandem multi-position pneumatic cylinder providing three defined rod positions: fully retracted (0 mm), 50 mm, and the total combined travel of 100 mm. Each of its two piston sections generates a powerful 3927 N of push force at 0.5 MPa, driven through a rigid 25 mm diameter rod, making it ideal for heavy-duty sorting or two-stage clamping where intermediate and full-extension stops are required.
This model includes a built-in magnet, allowing easy attachment of CMSG, DMSG, or EMSG sensors directly to the tie-rod barrel for precise, non-contact position feedback. With an operating pressure up to 1.0 MPa, a single section can achieve a theoretical thrust of 7068 N, and the body length is 308 mm plus stroke. It uses a PT1/2 port and an M20x1.5 rod thread, with an adjustable air cushion of 29 mm to decelerate the 100 mm total travel smoothly.
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 50 / 50 mm |
| Total travel | 100 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). Confirm against the product label before installation. Thread options: PT (standard) / G.
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 50 mm |
| P2 (both extended) | 100 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.
| 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.
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×50 | 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.
Uses the 50 mm stop for a low-force pre-clamp and the full 100 mm stroke for final high-force clamping, preventing damage to delicate large castings.
Positions a chute gate at closed (0 mm), divert to lane A (50 mm), or divert to lane B (100 mm) for routing heavy packages on a conveyor line.
Provides two controlled pressing depths in a single cycle, such as a shallow 50 mm pre-form and a full 100 mm final compaction stroke in a waste compactor.
Choose the SCT100X50X50S when a single cylinder must provide two distinct extended positions without the complexity of two separate actuators and external stops. If your force requirement is lower, stepping down to the SCT80 series offers 2513 N of push per section at 0.5 MPa, which can reduce air consumption and physical footprint. For a direct replacement, match the 100 mm bore, both 50 mm section strokes, PT port thread, and the integrated magnet; this unit is a basic mount configuration, so ensure your machine frame provides the primary support. The short 50 mm strokes per section keep the rod well-supported, minimizing side-load risk.
Multi-position checklist
It provides three distinct mechanical stops because both section strokes are equal at 50 mm. The rod positions are 0 mm (fully retracted), 50 mm, and 100 mm (fully extended).
Yes, if your sequence requires only the 50 mm and 100 mm stop positions. This tandem cylinder replaces the two actuators, mounting hardware, and flow controls, but you must ensure the single-section force of 3927 N at 0.5 MPa is sufficient for each stop, as the force does not double.
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