Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 40mm give 3 controllable stop positions across a 80mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 140 mm
- Stroke 240 mm
- Total travel80 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40S
The SCT50X40X40S is a double-acting tandem cylinder that delivers three fixed rod positions—0 mm, 40 mm, and 80 mm—by pressurising its two piston sections independently or together. Each section provides a push force of 982 N at 0.5 MPa, making it suitable for repetitive two-depth pressing or sorting tasks where intermediate stops must be hit accurately without external hard stops.
This model includes a built-in magnet (-S), allowing CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for end-of-stroke or mid-position confirmation. The 20 mm diameter rod and 21 mm adjustable air cushion at each end help manage deceleration, while the body length A(SCT) of 243 mm keeps the assembly compact for its 80 mm total travel.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 40 / 40 mm |
| Total travel | 80 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 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) | 40 mm |
| P2 (both extended) | 80 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X40X40S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×40 | 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 SCT50X40X40S Is Used
Two-Depth Pressing
Achieve a partial press at 40 mm and a full-depth press at 80 mm in assembly fixtures, using the discrete mechanical stops for repeatable depth control without a linear scale.
3-Position Sorting Gate
Direct parts to three separate conveyor lanes by stopping the cylinder rod at 0 mm (lane 1), 40 mm (lane 2), and 80 mm (lane 3), with sensor feedback from the built-in magnet confirming each position.
Multi-Stop Clamping
Clamp workpieces of two different thicknesses on a single fixture. The 40 mm stroke handles thin parts, while the full 80 mm travel secures thicker ones, all with 982 N of holding force per section.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X40S the Right Cylinder?
Choose the SCT50X40X40S when your process needs exactly three mechanical stop positions without the complexity of servo control. It replaces two separate cylinders or an SC cylinder with external stops, reducing plumbing and alignment work. For higher force, step up to the SCT63 bore (1559 N push per section at 0.5 MPa); for a lighter, more compact solution, the SCT40 bore (628 N) may suffice. As a direct replacement, match the 50 mm bore, both 40 mm strokes, PT port thread, basic mounting, and the -S magnet option to ensure sensor compatibility.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 40 + 40 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 SCT50X40X40S FAQ
It provides three distinct mechanical stop positions because both stroke sections are equal at 40 mm. The rod positions are 0 mm (fully retracted), 40 mm (one section extended), and 80 mm (both sections extended for total travel).
A standard single-rod SC cylinder cannot replicate the discrete intermediate stop position. You would need two SC cylinders with external stops or a complex valve setup. A direct replacement must be another SCT50X40X40S with the same bore, both 40 mm strokes, PT ports, and the -S magnet option for sensor mounting.
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