Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X120X120S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X120X120S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 120mm and 120mm give 3 controllable stop positions across a 240mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1120 mm
- Stroke 2120 mm
- Total travel240 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X120X120S
The SCT63X120X120S is a tandem multi-position cylinder that delivers three fixed rod positions: fully retracted (0 mm), mid-stroke (120 mm), and full extension (240 mm). Each 63 mm bore section generates 1559 N of push force at 0.5 MPa, making it suitable for sorting gates or two-depth pressing tasks that require repeatable mechanical stops without complex controls.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the tie-rod barrel for end-of-stroke or mid-position confirmation. With a 20 mm piston rod, PT1/4 ports, and a 28 mm adjustable air cushion, the cylinder body measures 249 mm in the A dimension, providing a compact footprint for a 240 mm total travel.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X120X120S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X120X120S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 120 / 120 mm |
| Total travel | 240 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 120 mm |
| P2 (both extended) | 240 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 SCT63X120X120S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×120 | Stroke 1 (section 1) in mm. |
| ×120 | 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 SCT63X120X120S Is Used
3-Position Diverter Gate
Use the three discrete stops (0, 120, 240 mm) to route packages or materials to three separate conveyor lanes. The built-in magnet enables sensor feedback at each position for reliable automated sortation.
Two-Depth Press or Stake
Achieve a partial-insertion depth at 120 mm and a full-seating depth at 240 mm in a single cycle. The 2805 N push force at 0.9 MPa handles firm press-fit or staking operations with consistent mechanical stops.
Multi-Stop Part Transfer
Shift a pick-and-place arm to a safe retracted position (0 mm), a mid-point for adhesive dispensing (120 mm), and a final placement location (240 mm). The 20 mm rod and tie-rod construction maintain alignment across the stroke.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X120X120S the Right Cylinder?
Choose the SCT when your application needs two or three positive mechanical stops from a single, self-contained actuator—this avoids the alignment and plumbing complexity of two separate cylinders with external hard stops. If the 1559 N push force per section (at 0.5 MPa) is marginal, stepping up to the 80 mm bore SCT80 series provides 2513 N per section. For a direct replacement, match the 63 mm bore, both 120 mm strokes, PT port thread, and the -S magnet option; the basic mounting style means no flange or foot bracket is attached.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 120 + 120 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 SCT63X120X120S FAQ
It provides three distinct mechanical stop positions because both strokes are equal (120 mm). The rod positions are 0 mm (fully retracted), 120 mm (first section extended), and 240 mm (both sections extended, total travel).
Yes, if your sequence requires fixed stops at 120 mm and 240 mm. The SCT63X120X120S combines two piston sections on one common rod, eliminating the need to synchronize two cylinders. Ensure the replacement matches the 63 mm bore, 120 mm strokes, PT ports, and the -S magnet if you need sensor feedback.
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