Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 130mm and 70mm give 4 controllable stop positions across a 200mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1130 mm
- Stroke 270 mm
- Total travel200 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S
The SCT40X130X70S is a double-acting multi-position tandem cylinder that delivers four discrete rod positions: 0 mm (fully retracted), 70 mm, 130 mm, and the full 200 mm extension. By pressurising either piston section independently or both together, you get repeatable mechanical stops without external hardware. The built-in magnet (S suffix) allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position feedback at each stop.
Each 40 mm bore section produces 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa), driven by a 16 mm diameter rod. The cylinder body has a 235 mm base length (A dimension) and uses PT1/4 ports with M12x1.25 rod threads. Adjustable pneumatic cushioning at both ends of each section decelerates the piston smoothly, and the TPU seals suit standard operating temperatures from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 130 / 70 mm |
| Total travel | 200 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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, 21 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) | 130 mm |
| P2 (section 2) | 70 mm |
| P3 (both extended) | 200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×130 | Stroke 1 (section 1) in mm. |
| ×70 | 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S Is Used
Two-Stage Part Sorting
Use the 70 mm and 130 mm stops to divert parts into three separate lanes from a single feed, with the fourth retracted position acting as a home or reject station.
Dual-Depth Insertion
Drive a tool to a shallow 70 mm press depth for one component variant and a deeper 130 mm depth for another, all within the same cycle and without tooling changes.
Multi-Stop Clamping Fixture
Clamp workpieces of two different thicknesses by stopping the rod at 70 mm or 130 mm, while the magnet-equipped sensors confirm the jaw position before machining starts.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S the Right Cylinder?
Choose the SCT40X130X70S when your process needs four fixed stopping points without the complexity of two separate cylinders and external hard stops. The 130 mm and 70 mm strokes create distinct positions ideal for sorting or two-depth insertion tasks. If your force requirement exceeds the 628 N push per section at 0.5 MPa, consider stepping up to the 50 mm bore SCT50, which provides 982 N per section. For a direct replacement, match the 40 mm bore, both strokes (130 mm and 70 mm), PT1/4 ports, and the -S magnet option; this cylinder is a tie-rod design and does not interchange with ISO 15552 profiles.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 130 + 70 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 SCT32-63 Multi-Position Tandem Air Cylinder SCT40X130X70S FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 70 mm (section 2 extended), 130 mm (section 1 extended), and 200 mm (both sections extended). These are fixed by the two stroke lengths and are not infinitely variable.
No. Like all standard pneumatic cylinders, the SCT40X130X70S will drift or drop if pressure is exhausted or a valve centres. To hold a load at an intermediate stop without live pressure, you must add an external rod lock or a pilot-operated check valve.
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