Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X300S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X300S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 300mm give 4 controllable stop positions across a 375mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 175 mm
- Stroke 2300 mm
- Total travel375 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X300S
The AirTAC SCT63X75X300S is a multi-position tandem cylinder that provides four distinct mechanical stop locations along its stroke: 0 mm (fully retracted), 75 mm, 300 mm, and the combined total travel of 375 mm. By pressurizing either of its two piston sections independently or simultaneously, you achieve repeatable positioning without external hard stops or complex servo controls. Each 63 mm bore section generates 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the tie-rod barrel for end-of-stroke or mid-position confirmation. The 20 mm diameter piston rod and 28 mm adjustable air cushion at each end manage deceleration effectively. With a body length A(SCT) of 249 mm, it fits into compact multi-stop fixtures where a single standard cylinder would require additional external stopping mechanisms.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X300S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X300S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 75 / 300 mm |
| Total travel | 375 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) | 75 mm |
| P2 (section 2) | 300 mm |
| P3 (both extended) | 375 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 SCT63X75X300S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×300 | 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 SCT63X75X300S Is Used
Multi-Stop Sorting Gate
The four positions (0, 75, 300, 375 mm) divert packages or parts to three distinct conveyor lanes. The built-in magnet confirms each gate position, ensuring reliable sortation without misroutes.
Two-Depth Pressing Station
Achieve a shallow 75 mm pre-press and a deep 300 mm final press stroke, plus a combined 375 mm ejection stroke, all from one compact actuator. The 2805 N force at 0.9 MPa handles robust forming tasks.
Staged Assembly Fixture
Position a welding or dispensing head at three distinct working heights (75, 300, 375 mm) and a safe retracted home position. Sensor feedback at each stop triggers the next process step automatically.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X75X300S the Right Cylinder?
Select the SCT63X75X300S when your application requires four fixed, repeatable positions without the complexity of servo drives. This tandem cylinder replaces setups using two separate cylinders or a single cylinder with external mechanical stops, reducing alignment work and component count. If your force requirement is lower, the 50 mm bore SCT series provides 982 N of push per section; for higher thrust, the 80 mm bore delivers 2513 N under the same 0.5 MPa supply.
As a direct replacement, match the 63 mm bore, both the 75 mm and 300 mm section strokes, PT port thread, basic mounting, and the integrated magnet (-S). Because the 300 mm section stroke is substantial, assess the rod for potential side-loading or bending in horizontal applications; external guides or a rigid tooling carriage are recommended to protect the rod bearing and seal from premature wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 300 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 SCT63X75X300S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm (first section extended), 300 mm (second section extended), and 375 mm (both sections extended, total travel). Select the position by pressurizing the appropriate combination of the two air ports.
Yes, in applications where you need two distinct stroke lengths from a single rod line. It eliminates the need for a second cylinder, mounting bracket, and coupler. Ensure the replacement matches the 63 mm bore, 75 mm and 300 mm strokes, PT thread, basic mount, and the -S magnet option for sensor compatibility.
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