Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X650X100S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X650X100S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 650mm and 100mm give 4 controllable stop positions across a 750mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 1650 mm
- Stroke 2100 mm
- Total travel750 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X650X100S
The SCT80X650X100S is a double-acting multi-position tandem cylinder that delivers four fixed rod positions: fully retracted (0 mm), 650 mm, 100 mm, and the total extended travel of 750 mm. Each piston section independently generates a push force of 2513 N at 0.5 MPa, scaling to 4523 N at the maximum operating pressure of 0.9 MPa, making it suitable for demanding two-depth clamping or sequential part-transfer tasks.
This model features a non-standard 650 mm stroke on the primary section, paired with a 100 mm secondary stroke, and includes a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors. The 25 mm diameter rod, PT3/8 ports, and 28 mm adjustable air cushion ensure reliable cycling at speeds up to 800 mm/s. The tie-rod body has a base length of 296 mm (A dimension), and the standard TPU seals operate from -20 to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X650X100S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X650X100S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 650 / 100 mm |
| Total travel | 750 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). 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 650 mm |
| P2 (section 2) | 100 mm |
| P3 (both extended) | 750 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 SCT80X650X100S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×650 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT80X650X100S Is Used
Two-Depth Clamping
Uses the 650 mm stroke for rapid approach and the 100 mm stroke for a high-force secondary clamp, providing two distinct gripping depths for different part families on a single fixture.
Sequential Part Transfer
Shifts a transfer arm to a 650 mm pickup position, then advances it a further 100 mm to place the part into a secondary nest, all with one compact tandem actuator.
Long-Stroke Sorting Gate
Positions a diverter gate at 0 mm (lane A), 650 mm (lane B), or 750 mm (lane C) for routing packages on a wide conveyor, with sensor feedback via the integrated magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X650X100S the Right Cylinder?
Select the SCT80X650X100S when your application requires a long primary advance of 650 mm followed by a precise 100 mm secondary positioning step, eliminating the complexity and plumbing of two separate cylinders with external stops. If the 2513 N per-section force at 0.5 MPa is insufficient, stepping up to the SCT100 bore provides 3927 N push per section; for a lighter load, the SCT63 bore delivers 1559 N. Ensure the rod is externally guided for the 650 mm stroke to prevent side-load induced bending.
As a direct replacement, match the 80 mm bore, both the 650 mm and 100 mm strokes, PT port thread, basic mounting, and the -S magnet option. This tie-rod cylinder is not an ISO 15552 profile; it replaces only an identical AirTAC SCT configuration.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 650 + 100 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 SCT80X650X100S FAQ
This 4-position cylinder stops at 0 mm (fully retracted), 650 mm (section one extended), 100 mm (section two extended), and 750 mm (both sections extended). The 650 mm stroke is non-standard and made-to-order.
No, the SCT is a pneumatic positioning cylinder, not a locking unit. If pressure is lost or the valve centers, the piston will drift. You must add an external rod lock or pilot-operated check valve to hold the load at any intermediate stop.
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