Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X380X250S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X380X250S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 380mm and 250mm give 4 controllable stop positions across a 630mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 1380 mm
- Stroke 2250 mm
- Total travel630 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X380X250S
The SCT100X380X250S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops—0 mm, 380 mm, 250 mm, and the full 630 mm extension—by pressurizing its two piston sections independently or together. With a 100 mm bore, each actuated section generates a push force of 3927 N at 0.5 MPa, rising to 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty material handling where distinct, repeatable positions are required.
This model includes a built-in magnet (-S suffix) for direct mounting of CMSG, DMSG, or EMSG sensors, enabling reliable end-of-stroke or mid-position sensing without external brackets. The cylinder uses a 25 mm diameter rod, PT 1/2 ports, and a standard TPU seal for operation in -20 to +70 °C. Its robust tie-rod construction has a body length A of 308 mm and an adjustable air cushion of 29 mm on each section to absorb energy smoothly.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X380X250S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X380X250S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 380 / 250 mm |
| Total travel | 630 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) | 380 mm |
| P2 (section 2) | 250 mm |
| P3 (both extended) | 630 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 SCT100X380X250S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×380 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT100X380X250S Is Used
Two-Stage Sorting Gate
Operate a diverter gate with four defined positions: home, partial open for small parcels, wide open for large boxes, and a full bypass position for oversized items, all controlled by sequencing pressure to each cylinder section.
Multi-Depth Pressing
Drive a press platen to two distinct working depths (380 mm and 630 mm) plus a safe retracted position, allowing a single machine to handle parts requiring different compression or insertion strokes without mechanical changeover.
Pallet Stop and Metering
Use the four discrete positions to create a traffic-control gate on a conveyor: fully retracted to release, extended 250 mm to stop the first pallet, 380 mm to stop a second, and fully extended at 630 mm as a maintenance lockout position.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X380X250S the Right Cylinder?
Select the SCT100X380X250S when your process requires four fixed stopping points along a single linear axis, eliminating the complexity and cost of mounting two separate cylinders with external stops. For applications needing higher thrust, this 100 mm bore provides 3927 N of push force per section at 0.5 MPa; if a lighter, more compact solution is acceptable, the 80 mm bore SCT80 series offers 2513 N. This cylinder is a direct replacement only for an identical AirTAC SCT100X380X250S, matching the 100 mm bore, both 380 mm and 250 mm strokes, PT port thread, basic mounting, and integrated magnet.
Given the 380 mm stroke on the first section, ensure the external load is guided to prevent rod bending or side-load damage. If the rod is subjected to significant lateral forces, install an external guide rail or rod support to protect the cylinder's bearings and seals.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 380 + 250 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 SCT100X380X250S FAQ
This tandem cylinder provides four discrete positions: 0 mm (fully retracted), 380 mm (first section extended), 250 mm (second section extended), and 630 mm (both sections extended, total stroke). The positions are achieved by pressurizing the appropriate cylinder ports, not through infinitely variable adjustment.
Yes, it is designed to replace a dual-cylinder setup where you need fixed intermediate stops, saving space and simplifying plumbing. However, it is a direct form-fit-function replacement only for another AirTAC SCT100X380X250S with a PT port, basic mount, and magnet. The force output per actuated section is 3927 N at 0.5 MPa, not a combined force.
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