Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X40X45
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X40X45 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 45mm give 4 controllable stop positions across a 85mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 140 mm
- Stroke 245 mm
- Total travel85 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X40X45
The SCT80X40X45 is an 80 mm bore multi-position pneumatic cylinder that delivers four distinct rod positions: fully retracted (0 mm), 40 mm, 45 mm, and the full 85 mm extension. Each actuated piston section generates a push force of 2513 N at 0.5 MPa, making it a robust solution for tasks requiring two different mid-stroke stopping points without complex servo controls.
Built on a durable tie-rod design with a 25 mm diameter rod and PT3/8 ports, this tandem cylinder integrates two strokes into one compact body. The adjustable air cushion at each end (28 mm cushion length) ensures smooth deceleration, while the 296 mm body length A(SCT) provides a rigid platform for mounting. It operates reliably on standard filtered air from 0.15 to 1.0 MPa.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X40X45 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X40X45 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 40 / 45 mm |
| Total travel | 85 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) | 40 mm |
| P2 (section 2) | 45 mm |
| P3 (both extended) | 85 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 SCT80X40X45
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×40 | 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 SCT80X40X45 Is Used
Two-Stage Sorting Gate
Divert packages to three different conveyor lanes by stopping the gate at 40 mm for a low-profile divert and 85 mm for a full-open position.
Dual-Depth Clamping
Clamp workpieces of two different thicknesses on a single fixture, using the 40 mm stroke for thin parts and the 85 mm total stroke for thicker ones.
Multi-Step Pressing
Execute a two-stage pressing operation where an initial 40 mm advance pre-forms a part, followed by a final press to the 85 mm total depth.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X40X45 the Right Cylinder?
Select the SCT80X40X45 when your process needs a single actuator to stop at two different mid-stroke positions, eliminating the cost and sequencing logic of two separate cylinders. If your application requires higher force, consider stepping up to the 100 mm bore SCT100 series, which provides 3927 N of push per section at 0.5 MPa. For a lighter, more compact solution, the 63 mm bore SCT63 delivers 1559 N per section.
To replace an existing SCT80X40X45, match the 80 mm bore, both the 40 mm and 45 mm strokes, PT port thread, and basic mounting configuration. For strokes exceeding 300 mm, evaluate the rod's side-load capacity and consider adding an external guide to prevent bending, though this model's short strokes are inherently rigid.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 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 SCT80X40X45 FAQ
It provides 4 distinct mechanical stops: 0 mm (fully retracted), 40 mm (first section extended), 45 mm (second section extended), and 85 mm (both sections extended). The positions are selected by pressurizing the appropriate cylinder sections.
Yes, in many cases. The SCT80X40X45 combines two strokes in a single body, saving space and simplifying pneumatic circuitry. Ensure the replacement matches the 80 mm bore, 40 mm and 45 mm strokes, PT3/8 ports, and basic mounting to be a direct fit.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCT Multi-Position Cylinders
Request a Quote for Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X40X45
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.