Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X45X45S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X45X45S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 45mm and 45mm give 3 controllable stop positions across a 90mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 145 mm
- Stroke 245 mm
- Total travel90 mm
- Positions3 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X45X45S
The SCT100X45X45S is a double-acting, multi-position tandem cylinder that provides three precise mechanical stops at 0 mm, 45 mm, and 90 mm by pressurizing its two piston sections independently or together. Each 100 mm bore section generates a substantial 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa, making it suitable for heavy-duty sorting or clamping fixtures.
This model includes a factory-integrated magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke or mid-position detection. The cylinder uses a 25 mm diameter piston rod with an M20x1.5 male thread, PT 1/2 port connections, and a 29 mm adjustable air cushion at each end to decelerate the 800 N class load smoothly.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X45X45S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X45X45S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 45 / 45 mm |
| Total travel | 90 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 45 mm |
| P2 (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 SCT100X45X45S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×45 | Stroke 1 (section 1) in mm. |
| ×45 | 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 SCT100X45X45S Is Used
3-Position Diverter Gate
Actuates a conveyor diverter to three fixed positions: fully retracted for lane one, mid-stroke at 45 mm for lane two, and fully extended at 90 mm for lane three, using sensor feedback from the built-in magnet.
Two-Depth Heavy Press
Provides a two-depth pressing sequence in a single cycle. The first section extends to a 45 mm pre-press position, and engaging the second section drives the tool to the full 90 mm depth with up to 7068 N of force.
Multi-Stop Clamping Fixture
Clamps workpieces of two different thicknesses on a machining center. The 0 mm position is the unclamped state, 45 mm clamps thin parts, and 90 mm clamps thick parts, with magnetic sensors confirming each state.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X45X45S the Right Cylinder?
Choose the SCT100X45X45S when your application requires two distinct extended positions plus full retraction from a single compact actuator, eliminating the complexity of mounting two separate cylinders. If the 3927 N per-section force is more than needed, stepping down to an 80 mm bore (SCT80) reduces the push force to 2513 N at the same 0.5 MPa pressure while maintaining the same 3-position functionality. For replacement, match the 100 mm bore, both 45 mm strokes, the PT thread, and the integrated magnet; this basic-mount model accepts FA, FB, CA, CB, or LB brackets if your fixture requires a flange, clevis, or foot mounting.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 45 + 45 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 SCT100X45X45S FAQ
It provides three distinct mechanical stop positions: 0 mm (fully retracted), 45 mm (first section extended), and 90 mm (both sections extended). Because the two strokes are equal, the 45 mm and 90 mm positions are the only extended stops.
Yes, the SCT100X45X45S is a direct form-fit replacement for any AirTAC SCT100 with 45 mm and 45 mm strokes and PT ports. The added -S magnet simply enables sensor mounting; it does not change the cylinder's envelope, mounting interfaces, or performance.
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