Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75 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 SCT40X75X75
The SCT40X75X75 is a double-acting multi-position cylinder that provides three fixed rod locations: fully retracted (0 mm), mid-stop at 75 mm, and full extension at 150 mm. Each piston section delivers 628 N of push force and 528 N of pull force at 0.5 MPa, driven through a 16 mm diameter piston rod.
Built on a tie-rod body with a length of 235 mm (A dimension) and 21 mm of adjustable air cushion, this tandem unit achieves repeatable stopping accuracy without complex controls. It operates on standard 40 µm filtered air and uses PT1/4 ports with a default M12x1.25 rod thread.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75 |
|---|---|
| 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 SCT40X75X75
| 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 SCT40X75X75 Is Used
3-Position Diverter Gates
Actuates a conveyor gate to three distinct positions: closed (0 mm), divert left (75 mm), and divert right (150 mm), routing packages without needing two actuators.
Two-Depth Pressing
Provides a partial pressing depth at 75 mm and a full-depth press at 150 mm for assembly operations requiring a pre-compression step before final seating.
Multi-Stop Material Stop
Positions a material stop bar at retracted (0 mm), intermediate (75 mm), and fully advanced (150 mm) to handle different workpiece lengths on a single fixture.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X75 the Right Cylinder?
Choose the SCT40X75X75 when you need three precise mechanical stops without the cost of servo positioning. This model replaces two separate cylinders or an SC unit with external hard stops, simplifying plumbing and mounting. If higher force is required, step up to the SCT50 series, which provides 982 N of push per section at 0.5 MPa. For a direct replacement, match the 40 mm bore, both 75 mm strokes, PT port thread, and basic mounting style.
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 SCT40X75X75 FAQ
This model provides 3 discrete positions because both strokes are equal at 75 mm. The rod stops at 0 mm (fully retracted), 75 mm (mid-stroke), and 150 mm (total travel when both sections are pressurized).
No, the SCT cylinder does not lock or hold position when pressure is exhausted. The piston will drift. If you need to hold a load at the 75 mm stop without live pressure, you must add an external rod brake or a pilot-operated check valve.
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Related AirTAC SCT Multi-Position Cylinders
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