Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 75mm give 3 controllable stop positions across a 150mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 175 mm
- Stroke 275 mm
- Total travel150 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75S
The AirTAC SCT40X75X75S is a double-acting multi-position tandem cylinder that delivers three precise, repeatable stop positions along its 150 mm total stroke: fully retracted (0 mm), mid-stroke (75 mm), and fully extended (150 mm). Each piston section generates 628 N of push force at 0.5 MPa, driven through a rigid 16 mm diameter rod, making it a compact solution for two-stop indexing tasks.
This model includes a built-in magnet (-S suffix), allowing easy attachment of CMSG, DMSG, or EMSG sensors directly to the tie-rod barrel for non-contact position feedback. With a 21 mm adjustable air cushion and a body length of 235 mm, it provides smooth deceleration at both ends of the tandem assembly, enhancing cycle life in high-speed sorting operations.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 75 / 75 mm |
| Total travel | 150 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 75 mm |
| P2 (both extended) | 150 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 SCT40X75X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT40X75X75S Is Used
3-Position Diverter Gate
Operates a conveyor diverter with three fixed positions—left, center, and right—to sort packages into separate lanes using the 0, 75, and 150 mm stops.
Two-Stage Clamping Fixture
Applies a light clamp at the 75 mm mid-stroke for part alignment, then advances to the full 150 mm stroke for final high-force holding, all from one compact unit.
Multi-Depth Labeling Press
Positions a labeling head at two distinct heights above a product line, using the discrete 75 mm and 150 mm stops to apply labels to different product tiers without reprogramming.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75S the Right Cylinder?
Choose the SCT40X75X75S when your application requires a fixed three-position sequence without the complexity of two separate cylinders and external hard stops. If the 628 N per-section push force is insufficient, stepping up to a 50 mm bore provides 982 N per section at the same pressure. For direct replacement, match the 40 mm bore, both 75 mm strokes, PT port thread, basic mounting, and the -S magnet option; this ensures identical mechanical and sensor compatibility.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 75 + 75 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 SCT40X75X75S FAQ
It provides three distinct mechanical stops: 0 mm (fully retracted), 75 mm (first section extended), and 150 mm (both sections extended). The positions are achieved by pressurizing the first, second, or both cylinder sections.
No, like all standard pneumatic cylinders, the SCT40X75X75S will not hold position if air pressure is exhausted or lost; the piston can drift. To safely hold a load at the mid-stroke without live pressure, you must add an external rod lock or a pilot-operated check valve.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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