Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X70X80
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X70X80 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 70mm and 80mm give 4 controllable stop positions across a 150mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 170 mm
- Stroke 280 mm
- Total travel150 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X70X80
The SCT100X70X80 is a double-acting multi-position cylinder that provides four distinct mechanical stops along its stroke. By pressurising either or both of its two piston sections, the rod can be precisely positioned at 0 mm, 70 mm, 80 mm, or the full combined travel of 150 mm, making it ideal for applications requiring intermediate positioning without complex controls.
Each piston section delivers a powerful push force of 3927 N at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa. The unit features a robust 25 mm diameter rod with an M20x1.5 thread and a PT1/2 port, built into a tie-rod body with an A-length of 308 mm and a 29 mm adjustable air cushion for smooth end-of-stroke deceleration.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X70X80 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X70X80 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 70 / 80 mm |
| Total travel | 150 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) | 70 mm |
| P2 (section 2) | 80 mm |
| P3 (both extended) | 150 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 SCT100X70X80
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×70 | Stroke 1 (section 1) in mm. |
| ×80 | 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 SCT100X70X80 Is Used
Two-Stage Sorting Gate
Operates a diverter gate with a retracted home, a 70 mm partial-open for one lane, an 80 mm partial-open for another, and a 150 mm full-open position for a bypass route.
Multi-Depth Pressing
Provides two distinct pressing depths in a single cycle. The first section advances 70 mm for an initial form, and the second section extends to 80 mm for a secondary coining operation without retooling.
Tiered Part Feeding
Shifts a feeder mechanism to three different track heights. The rod positions at 70 mm and 80 mm align with separate conveyor lanes, while the 150 mm stroke clears the part for maintenance access.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X70X80 the Right Cylinder?
This 100 mm bore SCT model is selected when high thrust is needed across multiple fixed stop positions, eliminating the complexity and cost of two separate cylinders with external hard stops. If a lower force is acceptable, stepping down to the 80 mm bore reduces per-section push force to 2513 N at 0.5 MPa, while retaining the same multi-position functionality. For a direct replacement, ensure the match includes the 100 mm bore, both the 70 mm and 80 mm section strokes, PT port threads, and basic mounting. Given the combined 150 mm travel and the 25 mm rod, consider external guides if the load has a significant side component to prevent rod bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 70 + 80 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 SCT100X70X80 FAQ
This tandem cylinder provides four discrete mechanical stop positions. The rod can be located at 0 mm (fully retracted), 70 mm (first section extended), 80 mm (second section extended), and 150 mm (both sections extended for total travel).
Each of the two piston sections in the SCT100X70X80 independently produces a theoretical push force of 3927 N at 0.5 MPa. The pull force on the retract stroke is slightly lower at 3681 N due to the area of the 25 mm rod.
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 SCT100X70X80
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.