Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X15S
The AirTAC Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X15S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 15mm give 4 controllable stop positions across a 40mm total travel, with a Ø100mm bore, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Stroke 125 mm
- Stroke 215 mm
- Total travel40 mm
- Positions4 stops
- Port sizePT1/2
About the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X15S
The SCT100X25X15S is a tandem multi-position cylinder delivering four discrete rod stops: 0 mm (fully retracted), 15 mm, 25 mm, and 40 mm (total travel). With a 100 mm bore, each piston section generates 3927 N of push force at 0.5 MPa, scaling up to 7068 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position sensing. The robust 25 mm diameter rod and 29 mm air cushion provide reliable end-of-stroke deceleration for the 40 mm total stroke length.
Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X15S Technical Specifications
| Model | Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X15S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø100 mm |
| Stroke 1 / Stroke 2 | 25 / 15 mm |
| Total travel | 40 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) | 25 mm |
| P2 (section 2) | 15 mm |
| P3 (both extended) | 40 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 SCT100X25X15S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×15 | 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 SCT100X25X15S Is Used
Multi-Stop Part Feeding
Advances components to four distinct positions in an assembly fixture, using the 15 mm, 25 mm, and 40 mm stops for precise staging without a servo axis.
Compact Gate Diverter
Operates a small diverter gate with four discrete angles for sorting items on a conveyor, using the cylinder's four positive stops for fast, repeatable positioning.
Two-Depth Pressing
Provides a light touch at 15 mm extension and a full press at 40 mm, with the 25 mm stop serving as an intermediate position for a two-stage forming or staking operation.
Is the Airtac SCT80~100 Multi-Position Tandem Cylinder SCT100X25X15S the Right Cylinder?
Choose the SCT100X25X15S when an application requires four fixed stopping points within a compact 40 mm total stroke envelope, eliminating the complexity of two separate cylinders and external hard stops. The integrated magnet simplifies sensor setup for confirming each of the four positions. If the 3927 N push force per section at 0.5 MPa is more than needed, stepping down to an 80 mm bore SCT reduces the per-section force to 2513 N. For replacement, match the 100 mm bore, both 25 mm and 15 mm strokes, PT port thread, and the -S magnet option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 15 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 SCT100X25X15S FAQ
This cylinder provides four distinct rod positions: 0 mm (fully retracted), 15 mm, 25 mm, and the total travel of 40 mm. These are achieved by pressurizing the two piston sections individually or together.
Yes. The -S suffix in SCT100X25X15S indicates a built-in magnet, making it fully compatible with AirTAC CMSG, DMSG, and EMSG series reed and solid-state sensors that clamp directly onto the cylinder's tie rods.
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