Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X35X2S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X35X2S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 35mm and 2mm give 4 controllable stop positions across a 37mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 135 mm
- Stroke 22 mm
- Total travel37 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X35X2S
The SCT80X35X2S tandem cylinder delivers four distinct rod positions—0, 2, 35, and 37 mm—from a single compact assembly. By pressurising one or both 80 mm bore sections, you get a push force of 2513 N per actuated section at 0.5 MPa, rising to 4523 N at 0.9 MPa, driven by a 25 mm rod.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position feedback. The body length A is 296 mm with a 28 mm adjustable air cushion at each end, making it ideal for short-throw sorting or diverting tasks where sensor confirmation is required.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X35X2S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X35X2S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 35 / 2 mm |
| Total travel | 37 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). 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) | 35 mm |
| P2 (section 2) | 2 mm |
| P3 (both extended) | 37 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 SCT80X35X2S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×35 | Stroke 1 (section 1) in mm. |
| ×2 | 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 SCT80X35X2S Is Used
Two-Stage Diverter Gate
The 2 mm stroke positions a narrow diverter blade for fine product separation, while the 35 mm stroke fully retracts the gate for a third flow path.
Micro-Adjust Stamping
Use the 2 mm stop for a light pre-press or part contact confirmation, then engage the 35 mm section for the full forming stroke, with sensor feedback at each position.
Multi-Lane Sorting
The four discrete positions (0, 2, 35, 37 mm) route packages to three different lanes. The magnet allows the PLC to verify the cylinder reached the shallow 2 mm stop before releasing the next item.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X35X2S the Right Cylinder?
Choose the SCT80X35X2S when your application needs four closely spaced mechanical stops without the complexity of two separate cylinders and external hard stops. The 80 mm bore provides 2513 N of push force per section at 0.5 MPa; if your load is lighter, stepping down to a 63 mm bore reduces the force to 1559 N per section. For replacement, match the 80 mm bore, both 35 mm and 2 mm strokes, PT port thread, and the built-in magnet. Note that the 2 mm stroke section has minimal travel—ensure your valve control can reliably achieve this short discrete position without overshoot.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 35 + 2 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 SCT80X35X2S FAQ
This tandem cylinder provides four discrete mechanical stops: fully retracted (0 mm), the second section extended (2 mm), the first section extended (35 mm), and both sections extended for the total travel of 37 mm.
Yes. The -S suffix indicates a built-in magnet, so you can mount CMSG reed switches or DMSG/EMSG solid-state sensors directly on the cylinder's tie-rod barrel to detect each of the four positions.
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