Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X40X45S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X40X45S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 45mm give 4 controllable stop positions across a 85mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Stroke 140 mm
- Stroke 245 mm
- Total travel85 mm
- Positions4 stops
- Port sizePT1/8
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X40X45S
The SCT32X40X45S is a tandem multi-position cylinder that provides four fixed rod positions: fully retracted (0 mm), 40 mm, 45 mm, and the total extended length of 85 mm. By pressurizing either of the two 32 mm bore sections independently or together, you get repeatable mechanical stops without external hard stops or complex controls. Each actuated section generates 402 N of push force at 0.5 MPa, with a 12 mm diameter rod and M10x1.25 rod-end thread.
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 intermediate position confirmation. The cylinder uses a PT1/8 port, has a 21 mm air cushion at each end for smooth deceleration, and operates reliably in standard temperatures from -20 to +70 °C with its TPU seals.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X40X45S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X40X45S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 40 / 45 mm |
| Total travel | 85 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). 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) | 45 mm |
| P3 (both extended) | 85 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 SCT32X40X45S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×45 | 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 SCT32X40X45S Is Used
Dual-Stop Part Diverting
Uses the 40 mm and 45 mm positions to guide small components down two different chute paths, with the 85 mm full extension clearing the gate for a third bypass lane.
Multi-Depth Insertion
Pushes a pin or probe to two controlled depths (40 mm and 45 mm) for assembly verification, with the retracted and full-extension positions serving as safe start and eject states.
Staged Clamping Fixture
Provides a light pre-clamp at 40 mm and a full clamping stroke at 45 mm, using the 85 mm total travel to fully retract the jaw for part loading and unloading.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X40X45S the Right Cylinder?
Choose the SCT32X40X45S when your process needs four distinct linear stops in a compact footprint, avoiding the cost and complexity of two separate cylinders with external brackets. If you need higher force per section, stepping up to the 40 mm bore SCT40 delivers 628 N of push at 0.5 MPa. For replacement, match the 32 mm bore, both strokes (40 mm and 45 mm), PT port thread, basic mounting, and the -S magnet option exactly. A direct swap with another AirTAC SCT32X40X45S ensures identical tie-rod dimensions and sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 45 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 SCT32X40X45S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 40 mm (section one extended), 45 mm (section two extended), and 85 mm (both sections extended, total travel). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, if your application requires only the four fixed positions (0, 40, 45, and 85 mm). The SCT tandem design eliminates the need for external brackets and alignment of two individual cylinders, but it does not double the force output; each section provides 402 N of push force at 0.5 MPa.
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