Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X250S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X250S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 350mm and 250mm give 4 controllable stop positions across a 600mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1350 mm
- Stroke 2250 mm
- Total travel600 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X250S
The SCT63X350X250S tandem cylinder delivers four fixed rod positions—0 mm, 250 mm, 350 mm, and the full 600 mm total travel—by pressurising its two piston sections independently. Each section generates a push force of 1559 N at 0.5 MPa (2805 N at 0.9 MPa), driven by a 20 mm rod through PT1/4 ports, making it suitable for multi-stop material handling tasks that require distinct, repeatable stopping points without complex servo controls.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for position feedback at each stop. The 63 mm bore body has an A-length of 249 mm and 28 mm of adjustable air cushion in each section, giving you controlled deceleration at every end-of-stroke. The standard TPU seals and PT threads keep it ready for general industrial air service from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X250S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X250S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 350 / 250 mm |
| Total travel | 600 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) | 350 mm |
| P2 (section 2) | 250 mm |
| P3 (both extended) | 600 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 SCT63X350X250S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×350 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT63X350X250S Is Used
Multi-Stop Diverter Gate
Positions a diverter chute at four distinct angles—fully retracted, mid-stroke at 250 mm, a second mid-point at 350 mm, and fully extended at 600 mm—to sort packages onto four separate conveyor lanes with a single actuator.
Two-Depth Pressing Station
Provides a shallow press depth at 250 mm for pre-forming and a deeper 350 mm stroke for final forming, plus a full 600 mm retract for part loading. The sensor-ready magnet confirms each position before the next cycle.
Staggered Pallet Stop
Controls a row of stop pins on a gravity conveyor, raising them to 250 mm to halt a light pallet, 350 mm for a heavier one, or the full 600 mm to act as a complete lane barrier, all from one tandem cylinder.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X350X250S the Right Cylinder?
Choose the SCT63X350X250S when your application needs four precise, repeatable stop locations without the cost and programming of a servo axis. It replaces two separate cylinders and external hard stops with a single, compact tandem unit, reducing mounting hardware and alignment time. If your load requires slightly less force, stepping down to a 50 mm bore provides 982 N of push per section at 0.5 MPa; for heavier loads, the 80 mm bore offers 2513 N.
For a direct replacement, match the 63 mm bore, both the 350 mm and 250 mm section strokes, PT1/4 port thread, and the integrated magnet (S suffix). With a combined travel of 600 mm, ensure the rod is properly guided if side loads are present, as the extended reach can amplify bending moments. Basic mounting is standard, but FA, FB, CA, CB, or LB brackets can be added if your machine interface requires a flange, clevis, or foot mount.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 350 + 250 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 SCT63X350X250S FAQ
This cylinder provides four discrete rod positions: 0 mm (fully retracted), 250 mm (section 2 extended), 350 mm (section 1 extended), and 600 mm (both sections extended, total travel). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT63X350X250S integrates both strokes into one tandem body on a single piston rod, giving you four fixed positions from one mounting footprint. It eliminates the need to align two separate cylinders and their brackets, reduces the number of valves required, and the built-in magnet lets you monitor all positions with sensors mounted directly on the cylinder barrel.
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