Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X45S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X45S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 45mm and 45mm give 3 controllable stop positions across a 90mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 145 mm
- Stroke 245 mm
- Total travel90 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X45S
The SCT40X45X45S is a 40 mm bore multi-position air cylinder that delivers three discrete rod positions: 0 mm (fully retracted), 45 mm, and 90 mm (full extension). Each of its two tandem piston sections generates 628 N of push force at 0.5 MPa, making it a repeatable actuator for light sorting or diverting tasks where a mid-stroke stop is required.
A built-in magnet allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for position confirmation at each stop. The cylinder uses a 16 mm diameter rod with M12x1.25 threads and PT1/4 ports. Its body length A measures 235 mm, and the 21 mm air cushion at each end helps manage end-of-stroke energy.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X45S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X45S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 45 / 45 mm |
| Total travel | 90 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 45 mm |
| P2 (both extended) | 90 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 SCT40X45X45S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×45 | 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 SCT40X45X45S Is Used
Two-Lane Diverter Gate
Uses the 0 mm, 45 mm, and 90 mm positions to route small packages between two conveyor lanes, with the mid-stroke acting as a neutral or bypass position.
Three-Level Part Feeding
Advances components in a magazine feeder to three distinct heights. The 45 mm stop presents a part at a middle inspection station before the final 90 mm push.
Label Applicator Pad Lift
Provides a retracted, mid-pressure, and full-pressure stroke for a tamp-blow label head, where the 45 mm position offers a gentle pre-contact stage.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X45X45S the Right Cylinder?
This three-position tandem cylinder replaces setups that would otherwise need two separate 40 mm bore cylinders and external bracketry to achieve a fixed intermediate stop. For applications needing higher force at the same 45 mm per-section stroke, consider stepping up to the 50 mm bore SCT50 series, which provides 982 N of push per section at 0.5 MPa. When replacing an existing SCT40X45X45S, match the 40 mm bore, both 45 mm strokes, PT1/4 ports, and the -S magnet option. Basic mounting is standard, but FA or LB brackets can be added if panel or foot mounting is preferred.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 45 + 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 SCT40X45X45S FAQ
It provides three distinct mechanical stops: 0 mm (retracted), 45 mm (first section extended), and 90 mm (both sections extended). Because both stroke sections are equal at 45 mm, the total travel is 90 mm.
Yes, in many cases. The SCT40X45X45S integrates two piston sections on one rod line, giving you a fixed 45 mm intermediate stop without the alignment and mounting complexity of two separate cylinders. Ensure the porting and mounting match your machine layout.
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