Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X70S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X70S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 60mm and 70mm give 4 controllable stop positions across a 130mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 160 mm
- Stroke 270 mm
- Total travel130 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X70S
The SCT40X60X70S is a double-acting tandem cylinder that delivers four fixed rod positions from a single compact assembly: fully retracted (0 mm), 60 mm, 70 mm, and the total extended length of 130 mm. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, driven by a 16 mm diameter piston rod with M12x1.25 threads, making it a precise actuator for multi-step mechanical sequences.
A built-in magnet is integrated along the barrel, allowing direct mounting of CMSG, DMSG, or EMSG sensors to confirm each discrete stop position. The cylinder body has a base length of 235 mm and uses PT1/4 ports with an adjustable air cushion of 21 mm at each end to manage deceleration without requiring external shock absorbers.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X70S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X70S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 60 / 70 mm |
| Total travel | 130 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) | 60 mm |
| P2 (section 2) | 70 mm |
| P3 (both extended) | 130 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 SCT40X60X70S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×60 | 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 SCT40X60X70S Is Used
Two-Stage Diverter Gate
Operates a product diverter on a conveyor with a retracted home position, a partial gate at 60 mm for sorting to lane one, a wider gate at 70 mm for lane two, and a full bypass at 130 mm.
Multi-Depth Clamping Fixture
Applies two different clamping pressures or jaw openings in a single cycle. The 60 mm stroke holds thin workpieces, while the 70 mm stroke accommodates thicker parts before full release.
Sequential Label Application
Positions a tamp pad at 60 mm for a primary label, retracts slightly to 70 mm for a secondary flag label, and fully extends to 130 mm to clear the applicator for the next product cycle.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X60X70S the Right Cylinder?
Choose the SCT40X60X70S when your process needs four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. If you require higher force per section, stepping up to the 50 mm bore SCT provides 982 N of push at 0.5 MPa. For a direct replacement, match the 40 mm bore, both strokes of 60 mm and 70 mm, the PT port thread, the basic mounting configuration, and the integrated magnet option.
Since the combined stroke reaches 130 mm, rod deflection is minimal under axial loads, but if the application involves significant side forces, adding an external linear guide rail is recommended to protect the rod bearing and seals from premature wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 60 + 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 SCT40X60X70S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 60 mm (section one extended), 70 mm (section two extended), and 130 mm (both sections extended). You select the position by pressurizing the corresponding air port.
The SCT combines two piston sections on a single common rod, which eliminates the alignment and synchronization issues of two independent cylinders. It saves mounting space and simplifies pneumatic plumbing, though the force output remains that of a single 40 mm bore section (628 N push at 0.5 MPa) per actuated side, not a doubled force.
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