Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X400S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X400S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 400mm give 4 controllable stop positions across a 500mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1100 mm
- Stroke 2400 mm
- Total travel500 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X400S
The SCT40X100X400S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops from two independently controlled piston sections. With strokes of 100 mm and 400 mm, the reachable positions are 0 mm (fully retracted), 100 mm, 400 mm, and the combined total travel of 500 mm. Each section generates 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa, driven by a 16 mm diameter piston rod.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. The body length A is 235 mm, and the cylinder features an adjustable pneumatic cushion of 21 mm at each end to manage deceleration. The standard TPU seals suit ambient temperatures from -20 to +70 °C, and the ports are PT1/4.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X400S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X400S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 100 / 400 mm |
| Total travel | 500 mm |
| Stop positions | 4 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 100 mm |
| P2 (section 2) | 400 mm |
| P3 (both extended) | 500 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 SCT40X100X400S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×400 | 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 SCT40X100X400S Is Used
Two-Stage Sorting Gate
Uses the 100 mm and 400 mm stops to divert packages to three separate conveyor lanes. The intermediate 100 mm position handles small items, while full extension reaches a distant lane.
Multi-Depth Press Insertion
Controls a press tool to two distinct insertion depths in one cycle. The 100 mm stop sets a shallow pre-insertion, and the 500 mm total travel completes the full-depth press.
Sequential Part Feeding
Feeds components from a magazine in two steps. The cylinder extends 100 mm to separate the first part, then travels to 400 mm to advance the next, with a final push to 500 mm for clearing.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X400S the Right Cylinder?
This 4-position unit replaces complex setups that would otherwise require two separate cylinders with external stops and sequencing valves. The SCT40X100X400S provides fixed, repeatable stops at 100 mm, 400 mm, and 500 mm from a single actuator body, simplifying the pneumatic circuit and reducing mounting space. If a higher thrust is needed, stepping up to the 50 mm bore SCT50 series provides 982 N of push per section at 0.5 MPa.
When replacing an existing SCT, match the 40 mm bore, both the 100 mm and 400 mm section strokes, the PT1/4 port thread, and the integrated magnet. As the longer 400 mm stroke section approaches the limits of standard rod support, ensure the external load is guided or supported to prevent rod bending and side-load wear on the bearing.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 100 + 400 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 SCT40X100X400S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 100 mm (first section extended), 400 mm (second section extended), and 500 mm (both sections extended for total travel). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, it is designed to do exactly that. It combines a 100 mm stroke and a 400 mm stroke into one tandem body, giving you the same three extended positions without needing two cylinders, two mounting brackets, and external hard stops. Ensure the replacement matches the 40 mm bore, PT1/4 ports, and the -S magnet option.
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