Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X30X770S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X30X770S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 770mm give 4 controllable stop positions across a 800mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 130 mm
- Stroke 2770 mm
- Total travel800 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X30X770S
The SCT32X30X770S is a double-acting tandem cylinder that delivers four fixed rod positions: 0 mm, 30 mm, 770 mm, and the full 800 mm total travel. It uses two piston sections on a common 12 mm diameter rod, with PT1/8 ports and M10x1.25 rod-end threads. Each section provides 402 N of push force at 0.5 MPa, rising to 724 N at 0.9 MPa, making it suitable for sequencing two distinct short and long travel operations in one compact unit.
This model carries a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for non-contact position feedback. The 770 mm second stroke is a non-standard, made-to-order length exceeding the standard 500 mm maximum, and the body length A(SCT) is 233 mm plus the combined stroke lengths. The cushion length is 21 mm per end, providing adjustable deceleration for both sections.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X30X770S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X30X770S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 30 / 770 mm |
| Total travel | 800 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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). 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) | 30 mm |
| P2 (section 2) | 770 mm |
| P3 (both extended) | 800 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 SCT32X30X770S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×30 | Stroke 1 (section 1) in mm. |
| ×770 | 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 SCT32X30X770S Is Used
Two-Stage Diverter Gate
Uses the 30 mm stroke to clear a gate seal and the 770 mm stroke to fully open a material diverter chute, with sensor confirmation at both positions via the built-in magnet.
Dual-Depth Clamping Fixture
Provides a precise 30 mm initial clamp for thin workpieces and a full 770 mm retraction for part loading, controlled by pressurizing the short or long section.
Sequential Part Transfer
Executes a short 30 mm pick-up stroke followed by a long 770 mm transfer stroke in a single actuator, reducing cycle time and simplifying pneumatic circuitry.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X30X770S the Right Cylinder?
Choose the SCT32X30X770S when you need a compact, sensor-ready actuator that can stop at a short 30 mm position and a long 770 mm position without the complexity of two separate cylinders and external hard stops. The integrated magnet simplifies adding reed or solid-state sensors for confirming each discrete stop. If higher force is needed, stepping up to the 40 mm bore SCT series provides 628 N of push per section at 0.5 MPa.
For replacement, match the 32 mm bore, both the 30 mm and 770 mm strokes, PT port thread, and the -S magnet option. The 770 mm stroke creates a long extended length; ensure the 12 mm rod is adequately guided or supported to prevent buckling under compressive loads, especially when pushing at higher pressures.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 30 + 770 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 SCT32X30X770S FAQ
This tandem cylinder provides four discrete rod positions: fully retracted (0 mm), the first section extended (30 mm), the second section extended (770 mm), and both sections extended for the total travel of 800 mm. The positions are fixed by the two stroke lengths and are selected by pressurizing the appropriate cylinder ports.
Yes, it can replace two individual cylinders that were used to achieve a short and a long travel, provided the strokes match (30 mm and 770 mm) and the force per section (402 N push at 0.5 MPa) is sufficient. The replacement must be an AirTAC SCT32X30X770S with a PT port thread and the -S magnet option to ensure sensor compatibility.
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