Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X45X45
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X45X45 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 45mm and 45mm give 3 controllable stop positions across a 90mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 145 mm
- Stroke 245 mm
- Total travel90 mm
- Positions3 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X45X45
The SCT80X45X45 is a tandem multi-position pneumatic cylinder that provides three fixed rod positions: fully retracted (0 mm), 45 mm, and the combined 90 mm total travel. By pressurising either or both of its two 80 mm bore sections, this double-acting unit delivers discrete mechanical stops without the complexity of servo systems. Each piston section generates a push force of 2513 N at 0.5 MPa, rising to 4523 N at the maximum operating pressure of 0.9 MPa.
This model features a 25 mm diameter rod and a 28 mm adjustable air cushion at each end for smooth deceleration. The tie-rod construction has a body length A(SCT) of 296 mm and standard PT3/8 ports. With a default TPU seal, it operates reliably between -20 and +70 °C, making it a robust choice for sorting and diverting tasks where three distinct end-points are required.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X45X45 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X45X45 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 45 / 45 mm |
| Total travel | 90 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 45 mm |
| P2 (both extended) | 90 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 SCT80X45X45
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×45 | Stroke 1 (section 1) in mm. |
| ×45 | 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 SCT80X45X45 Is Used
Three-Way Diverter Gate
Actuates a diverter chute to three fixed positions—retracted, mid-stroke at 45 mm, and fully extended at 90 mm—for sorting packages or bulk materials onto three separate conveyor lanes.
Two-Depth Pressing Station
Provides two distinct pressing depths in a single compact unit. The 45 mm stroke handles a shallow pre-form operation, and the combined 90 mm stroke completes the final press, eliminating the need for a two-stage tool.
Multi-Stop Part Transfer
Shifts a transfer arm to three positions for a pick-and-place sequence: a safe retracted home, a 45 mm pick location, and a 90 mm place location, all driven by one cylinder body.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X45X45 the Right Cylinder?
Select the SCT80X45X45 when your application needs three precise, repeatable stop positions along a 90 mm stroke without using two separate cylinders and external hard stops. This tandem design simplifies plumbing and mounting compared to a dual-cylinder setup. If your force requirement is lower, stepping down to the 63 mm bore SCT63X45X45 reduces the per-section push force to 1559 N at 0.5 MPa. For higher thrust, the 100 mm bore SCT100X45X45 provides 3927 N per section at the same pressure.
When replacing an existing unit, match the 80 mm bore, both 45 mm section strokes, and the PT3/8 port thread. This basic configuration has no built-in magnet or mounting brackets; if you need sensor feedback, order the -S variant, and add FA/FB flanges or LB feet if panel or foot mounting is required.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 45 + 45 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 SCT80X45X45 FAQ
It provides three distinct mechanical stop positions because both piston sections have an equal 45 mm stroke. The rod positions are 0 mm (fully retracted), 45 mm (first section extended), and 90 mm (both sections extended for full travel).
Yes, this is a primary design advantage. The SCT80X45X45 replaces two individual cylinders and their mounting hardware with a single tandem body, giving you three fixed stops. Ensure the replacement matches the 80 mm bore, both 45 mm strokes, and your required port thread and mounting style.
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