Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X85S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X85S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 85mm and 85mm give 3 controllable stop positions across a 170mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 185 mm
- Stroke 285 mm
- Total travel170 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X85S
The SCT100X85X85S is a tandem multi-position cylinder providing three distinct rod positions: fully retracted (0 mm), mid-stop at 85 mm, and full extension at 170 mm. Each piston section generates a substantial 3927 N of push force at 0.5 MPa, making it suitable for heavy-duty sorting or clamping operations requiring defined intermediate stops.
Equipped with a built-in magnet, this model is ready for direct mounting of CMSG, DMSG, or EMSG sensors to confirm piston position without external brackets. The 25 mm diameter rod and M20x1.5 rod thread ensure robust connection, while the PT1/2 ports and 29 mm cushion length provide smooth deceleration at each end of the 170 mm total stroke.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X85S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X85S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 85 / 85 mm |
| Total travel | 170 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.
Stop Positions (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 85 mm |
| P2 (both extended) | 170 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 SCT100X85X85S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×85 | Stroke 1 (section 1) in mm. |
| ×85 | 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 SCT100X85X85S Is Used
Two-Stage Clamping
Ideal for fixtures requiring a low-force approach at 85 mm followed by full clamping force at 170 mm, preventing damage to delicate parts.
Sorting Gate Actuator
Operates a diverter gate with a neutral center position, routing packages to two different conveyor lanes based on the 85 mm and 170 mm stops.
Multi-Depth Press
Provides two consistent pressing depths in a compact footprint, useful for assembly operations where a part is seated in two stages.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X85S the Right Cylinder?
Select the SCT100X85X85S when your application needs a robust 100 mm bore actuator with two equal 85 mm travel segments, giving a compact three-position solution. If higher force is needed, consider stepping up is not possible as 100 mm is the max bore; for a lighter, faster cycle, the SCT80 series offers 2513 N push per section. This cylinder is a direct replacement for any AirTAC SCT100X85X85 with a magnet sensor requirement, matching bore, both strokes, and PT port thread.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 85 + 85 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 SCT100X85X85S FAQ
This cylinder provides exactly three discrete stop positions: fully retracted at 0 mm, an intermediate stop at 85 mm, and full extension at 170 mm. It achieves this by pressurizing one or both of its internal piston sections.
Yes, the 'S' in the model code signifies a built-in magnet, making it compatible with AirTAC's CMSG, DMSG, and EMSG series reed and solid-state sensors. These clamp directly onto the cylinder's tie-rod barrel to detect piston position.
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