Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X40X140S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X40X140S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 140mm give 4 controllable stop positions across a 180mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 140 mm
- Stroke 2140 mm
- Total travel180 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X40X140S
The SCT63X40X140S is a tie-rod multi-position air cylinder that creates four fixed rod stops from two piston sections on a common rod line. With strokes of 40 mm and 140 mm, the rod can be precisely positioned at 0 mm (fully retracted), 40 mm, 140 mm, and the total travel of 180 mm by pressurising the sections individually or together. Each 63 mm bore section delivers 1559 N of push force at 0.5 MPa, giving reliable thrust for sequenced pneumatic workflows.
This model includes a built-in magnet (suffix -S), allowing CMSG, DMSG, or EMSG solid-state and reed sensors to clamp directly onto the tie-rod barrel for end-of-stroke or mid-position confirmation. The cylinder uses a 20 mm diameter piston rod with M16x1.5 threads, PT1/4 ports, and a 28 mm adjustable air cushion at each end section to decelerate the load smoothly. The body length A(SCT) is 249 mm.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X40X140S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X40X140S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 40 / 140 mm |
| Total travel | 180 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). 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) | 40 mm |
| P2 (section 2) | 140 mm |
| P3 (both extended) | 180 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 SCT63X40X140S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×140 | 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 SCT63X40X140S Is Used
Four-Position Diverter Gate
Operates a conveyor diverter with four set points: home (0 mm), lane one (40 mm), lane two (140 mm), and a bypass/maintenance position (180 mm). The built-in magnet confirms each stop with a sensor.
Two-Depth Pressing or Staking
Advances a pressing tool to a light-contact position at 40 mm for pre-loading, then drives to a full-depth stake at 140 mm. The 180 mm retracted position provides extra clearance for part changes.
Sequenced Clamp-and-Feed
Clamps a workpiece with the first 40 mm stroke, then feeds the clamped assembly forward 140 mm into a machining station. Sensor feedback at each position ensures the sequence is interlocked correctly.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X40X140S the Right Cylinder?
Choose this four-position actuator when your process needs three distinct extended stops without the complexity of two separate cylinders and external hard stops. The 40 mm and 140 mm strokes suit a short advance for a primary gate or clamp, followed by a longer secondary feed or ejection stroke. If your force requirement is lower, the 50 mm bore SCT provides 982 N push per section; for higher thrust, step up to the 80 mm bore at 2513 N push per section. For a direct replacement, match an AirTAC SCT with a 63 mm bore, 40 mm and 140 mm strokes, PT thread, and the -S magnet option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 140 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 SCT63X40X140S FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (fully retracted), 40 mm (first section extended), 140 mm (second section extended), and 180 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The force output is per actuated single piston section, not a combined total. Each 63 mm bore section generates 1559 N push and 1402 N pull at 0.5 MPa. When only one section is pressurised for the 40 mm or 140 mm stop, that single-section force applies. The cylinder does not double its force when both sections are pressurised for the 180 mm position.
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