Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X40S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X40S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 40mm give 4 controllable stop positions across a 90mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 150 mm
- Stroke 240 mm
- Total travel90 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X40S
The SCT100X50X40S creates four fixed rod positions—0 mm, 50 mm, 40 mm, and 90 mm total travel—by pressurising two independent piston sections on a single tie-rod body. Each 100 mm bore section generates 3927 N of push force at 0.5 MPa, rising to 7068 N at the 0.9 MPa maximum operating pressure, giving you substantial thrust for multi-step clamping or material handling without needing two separate cylinders.
This model includes a built-in magnet (-S suffix), so you can mount CMSG, DMSG, or EMSG reed and solid-state sensors directly on the barrel for end-of-stroke or mid-position confirmation. The 25 mm diameter piston rod, PT 1/2 ports, and 29 mm adjustable air cushion at each end provide robust guidance and reliable deceleration. The body length A is 308 mm, and the standard TPU seals suit ambient temperatures from -20 °C to +70 °C.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X40S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X40S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 50 / 40 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) | 50 mm |
| P2 (section 2) | 40 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 SCT100X50X40S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×40 | 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 SCT100X50X40S Is Used
Two-Stage Diverter Gate
Actuate a chute or gate to three positions—fully open (90 mm), partially open to a first lane (50 mm), or closed (0 mm)—for sorting packages or bulk materials on a conveyor line.
Multi-Depth Pressing
Drive a press platen to two controlled depths in one cycle: a light contact position at 40 mm stroke, followed by a full-insertion depth at 90 mm, using the 7068 N thrust at 0.9 MPa for final seating.
Staged Clamping Fixture
Use the 50 mm and 90 mm extended positions to clamp workpieces of two different thicknesses on a machining centre, with magnetic sensors verifying the correct clamp position before the cycle starts.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X50X40S the Right Cylinder?
Choose the SCT tandem cylinder when your application needs up to four distinct, repeatable stop positions from a single actuator, saving the cost and complexity of mounting and plumbing two separate cylinders. For higher force at the same pressure, step up to the only larger SCT bore—this is already the 100 mm model; for a lighter, more compact solution, the SCT80 bore delivers 2513 N push per section at 0.5 MPa. When replacing an existing SCT100X50X40S, match the bore, both strokes (50 mm and 40 mm), the PT port thread, basic mounting, and the -S magnet option to ensure identical sensor compatibility and mechanical fit.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 40 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 SCT100X50X40S FAQ
This tandem cylinder provides four discrete rod positions: fully retracted (0 mm), first section extended (50 mm), second section extended (40 mm), and both sections extended for the total travel (90 mm). The positions are fixed by the two stroke lengths and are selected by pressurising the appropriate cylinder ports.
The SCT tandem unit mounts on a single set of tie-rod end caps with a common piston rod, which saves space, eliminates the need to align two separate cylinder bodies, and reduces the number of mounting brackets and flow controls required. It delivers the same per-section force (3927 N push at 0.5 MPa) as a standard SC100, but in a more compact, pre-integrated package designed specifically for multi-position tasks.
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