Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X65X25
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X65X25 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 65mm and 25mm give 4 controllable stop positions across a 90mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 165 mm
- Stroke 225 mm
- Total travel90 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X65X25
The SCT100X65X25 is a 100 mm bore tandem cylinder that delivers four distinct rod positions—0 mm, 65 mm, 25 mm, and the combined 90 mm total travel—by pressurising its two piston sections independently. Each section provides a push force of 3927 N at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, driven through a rigid 25 mm diameter rod.
Engineered as a robust tie-rod design with a 308 mm body length and a 29 mm adjustable air cushion, this double-acting unit uses PT1/2 ports and an M20x1.5 rod thread. It operates on filtered air at 0.15–1.0 MPa and suits ambient temperatures from -20 to +70 °C with its standard TPU seals, making it a reliable choice for discrete multi-stop actuation.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X65X25 Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X65X25 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 65 / 25 mm |
| Total travel | 90 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) | 65 mm |
| P2 (section 2) | 25 mm |
| P3 (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 (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 SCT100X65X25
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×65 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT100X65X25 Is Used
Two-Stage Sorting Gate
Uses the 65 mm stroke to extend a diverter into a main product flow and the 25 mm stroke to shift between two separate downstream chutes, achieving a three-lane sort from a single actuator.
Sequential Clamping
Applies a 65 mm travel to close a safety guard, then a precise 25 mm secondary stroke to engage a locking pin, ensuring a two-step safety sequence is mechanically enforced before a cycle starts.
Dual-Depth Pressing
Provides a primary 65 mm advance for a forming tool and a 25 mm final pressing stroke, allowing one cylinder to execute a coarse approach followed by a fine, high-force compaction at 90 mm total extension.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X65X25 the Right Cylinder?
Select this SCT model when a single actuator must index between four fixed positions without the complexity of two separate cylinders and external hard stops. The 65 mm and 25 mm strokes create an asymmetric position set ideal for a long advance and a short secondary shift. If your force requirement is lower, stepping down to an 80 mm bore provides 2513 N of push per section at 0.5 MPa. For replacement, match the 100 mm bore, both the 65 mm and 25 mm strokes, PT port threads, and the basic mounting configuration precisely.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 65 + 25 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 SCT100X65X25 FAQ
This tandem cylinder provides four discrete rod positions: fully retracted (0 mm), the first section extended (65 mm), the second section extended (25 mm), and both sections extended for the total travel (90 mm). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
The force is generated per actuated piston section. At 0.5 MPa, each 100 mm bore section delivers 3927 N of push force. The force does not double when both sections are pressurised; rather, pressurising a section moves the rod to its corresponding discrete stop position.
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