Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X550S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X550S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 150mm and 550mm give 4 controllable stop positions across a 700mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1150 mm
- Stroke 2550 mm
- Total travel700 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X550S
The SCT63X150X550S is a tie-rod multi-position cylinder that delivers four discrete rod stops: 0 mm, 150 mm, 550 mm, and the full 700 mm combined stroke. With a 20 mm rod and M16x1.5 thread, each piston section generates 1559 N of push force at 0.5 MPa, scaling to 2805 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet, allowing CMSG, DMSG, or EMSG sensors to be mounted directly on the barrel for non-contact position sensing. Because the 550 mm section exceeds the standard 500 mm range, this unit is a made-to-order configuration. The adjustable air cushion at each end, with a 28 mm cushion length, provides smooth deceleration for the moving mass.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X550S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X550S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 150 / 550 mm |
| Total travel | 700 mm |
| Stop positions | 4 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, 28 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). This configuration exceeds the 500 mm standard section stroke, so it is a non-standard / made-to-order build. 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) | 150 mm |
| P2 (section 2) | 550 mm |
| P3 (both extended) | 700 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCT63X150X550S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×150 | Stroke 1 (section 1) in mm. |
| ×550 | 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 SCT63X150X550S Is Used
Two-Stage Sorting Gate
Operates a diverter gate with three active positions—retracted, mid-extension at 150 mm for lane one, and full 700 mm extension for lane two—directed by a single tandem cylinder.
Multi-Depth Pressing
Provides two distinct pressing depths in a single cycle. The first section extends 150 mm for a pre-form operation, and the second section adds 550 mm for the final form, all with consistent force.
Sequential Part Feeding
Pushes components through a multi-stage assembly fixture. The 150 mm stroke indexes a part to station one, and the combined 700 mm stroke moves it directly to station two, eliminating a separate transfer mechanism.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X550S the Right Cylinder?
This 4-position tandem cylinder replaces complex setups that would otherwise require two separate cylinders and external hard stops to achieve the same 0, 150, 550, and 700 mm positions. The integrated design simplifies pneumatic circuitry and ensures the stroke sequence is mechanically fixed. When selecting, consider that the SCT50 offers 982 N of push force per section if a lighter load is present, while the SCT80 steps up to 2513 N for heavier applications.
For a direct replacement, match the 63 mm bore, the 150 mm and 550 mm section strokes, PT port thread, and the built-in magnet. The 550 mm stroke section creates a long moment arm; ensure the load is externally guided or supported to prevent rod bending and premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 150 + 550 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 SCT63X150X550S FAQ
It provides four discrete mechanical stops: fully retracted (0 mm), the first section extended (150 mm), the second section extended (550 mm), and both sections extended for the total travel of 700 mm.
No. Like all standard pneumatic cylinders, the SCT does not lock or hold position when pressure is exhausted or lost. If a load must be mechanically held at a mid-stroke position without live pressure, an external rod lock or pilot-operated check valve must be added to the circuit.
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