Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X15S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X15S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 85mm and 15mm give 4 controllable stop positions across a 100mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 185 mm
- Stroke 215 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X15S
The SCT100X85X15S is a 100 mm bore multi-position air cylinder that provides four fixed rod positions—0 mm, 15 mm, 85 mm, and 100 mm total travel—by pressurising its two tandem piston sections independently or together. Each section delivers a push force of 3927 N at 0.5 MPa, and the unit is equipped with a built-in magnet, allowing CMSG/DMSG/EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position feedback.
This model uses a 25 mm diameter rod with an M20x1.5 male thread and PT1/2 ports. The adjustable air cushion at each end is 29 mm long, and the overall body length A(SCT) is 308 mm. Operating pressure spans 0.15–1.0 MPa, and the standard TPU seals suit ambient temperatures from -20 °C to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X15S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X15S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 85 / 15 mm |
| Total travel | 100 mm |
| Stop positions | 4 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 85 mm |
| P2 (section 2) | 15 mm |
| P3 (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.
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 SCT100X85X15S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×85 | Stroke 1 (section 1) in mm. |
| ×15 | 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 SCT100X85X15S Is Used
Two-Depth Pressing
Use the 15 mm stroke for a light pre-press or part contact and the 85 mm stroke for the full forming depth, giving a repeatable two-step sequence from one cylinder.
Diverter Gate Actuation
The four positions (0, 15, 85, 100 mm) can set a flipper gate to closed, partial bypass, full divert, and a maintenance position, all controlled by two solenoid valves.
Multi-Stop Feeding
Advance a pusher to 15 mm for thin components, 85 mm for standard parts, and the full 100 mm stroke to clear a jam, with sensor confirmation at each stop via the built-in magnet.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X85X15S the Right Cylinder?
Choose the SCT100X85X15S when you need four discrete mechanical stops from a single compact assembly, avoiding the complexity of two separate cylinders and external hard stops. If your force requirement is lower, stepping down to the 80 mm bore reduces per-section push to 2513 N at 0.5 MPa, while still keeping the same multi-position logic. To replace an existing SCT100X85X15S, match the 100 mm bore, both strokes (85 mm and 15 mm), PT1/2 ports, and the -S magnet option; the basic mount means no additional bracket is included.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 85 + 15 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 SCT100X85X15S FAQ
It provides four distinct mechanical stop positions: 0 mm (fully retracted), 15 mm (section 2 extended), 85 mm (section 1 extended), and 100 mm (both sections extended, total travel).
Yes. The -S suffix indicates a built-in magnet, so CMSG reed switches or DMSG/EMSG solid-state sensors can be mounted directly on the tie-rod barrel to detect each of the four positions.
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