Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X50S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 50mm give 4 controllable stop positions across a 75mm total travel, with a Ø80mm bore, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Stroke 125 mm
- Stroke 250 mm
- Total travel75 mm
- Positions4 stops
- Port sizePT3/8
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X50S
The SCT80X25X50S is a double-acting multi-position cylinder that provides four fixed rod positions: fully retracted (0 mm), 25 mm, 50 mm, and the combined 75 mm total travel. Each piston section delivers 2513 N of push force at 0.5 MPa, giving you precise, repeatable stopping power without the complexity of servo systems. The 25 mm diameter rod and PT3/8 ports ensure robust flow for consistent cycle times.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for end-of-stroke or intermediate position feedback. The 28 mm adjustable air cushion at each end absorbs energy quietly, protecting the cylinder during high-speed operation. This is a genuine AirTAC tandem unit, ready to simplify your multi-stop linear motion tasks.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X50S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø80 mm |
| Stroke 1 / Stroke 2 | 25 / 50 mm |
| Total travel | 75 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) | 25 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 75 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 SCT80X25X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT80X25X50S Is Used
Two-Stage Sorting Gate
Diverts packages to three lanes using the 25 mm and 50 mm stops, with the 75 mm position for a reject chute. Sensors confirm each stop.
Multi-Depth Pressing
Sets two distinct pressing depths in a single cycle, first at 25 mm for a light touch and 50 mm for full compression, improving throughput.
Staged Clamping Fixture
Clamps a workpiece at 25 mm for drilling and advances to 50 mm for tapping, eliminating the need for a secondary actuator.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT80X25X50S the Right Cylinder?
Choose the SCT80 tandem when your application needs up to four hard stops without the cost of two separate cylinders and external valving. If you need higher force per section, step up to the 100 mm bore, which provides 3927 N push at 0.5 MPa. For a drop-in replacement, match the 80 mm bore, both strokes (25 and 50 mm), PT port thread, basic mounting, and the -S magnet option. This cylinder is not ISO 15552; it is an AirTAC-specific tie-rod design.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 50 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 SCT80X25X50S FAQ
It provides four distinct stop positions: 0 mm (retracted), 25 mm (first section extended), 50 mm (second section extended), and 75 mm (both sections extended).
Yes, the -S suffix indicates a built-in magnet, making it compatible with AirTAC CMSG, DMSG, and EMSG sensors that clamp directly onto the cylinder's tie-rod barrel.
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