Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X45S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X45S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 55mm and 45mm give 4 controllable stop positions across a 100mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 155 mm
- Stroke 245 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X45S
The SCT50X55X45S is a tandem multi-position cylinder that delivers four fixed rod positions from its two integrated piston sections: 0 mm, 45 mm, 55 mm, and the full combined travel of 100 mm. Each section shares a 20 mm rod and PT1/4 ports, with a per-section push force of 982 N at 0.5 MPa, scaling to 1767 N at the maximum operating pressure of 0.9 MPa.
A built-in magnet is included in this -S variant, allowing direct attachment of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke or intermediate position detection. The body length A(SCT) is 243 mm, and the 21 mm air cushion at each end helps manage stopping energy across the speed range of 30–800 mm/s.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X45S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X45S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 55 / 45 mm |
| Total travel | 100 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, 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) | 55 mm |
| P2 (section 2) | 45 mm |
| P3 (both extended) | 100 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X55X45S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×55 | 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 SCT50X55X45S Is Used
Two-Stage Sorting Gate
Diverts parts to two different lanes using the 45 mm and 55 mm stops, with the full 100 mm stroke clearing a reject path. The magnet confirms each position is reached.
Dual-Depth Press
Operates a press tool to a shallow 45 mm set depth and a deeper 55 mm depth, with the 100 mm stroke used for part ejection. Sensor feedback ensures consistent forming.
Multi-Stop Feeding
Advances a conveyor pusher in three increments: a short 45 mm feed, a 55 mm feed, and a full 100 mm return stroke. The magnet enables cycle counting.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X55X45S the Right Cylinder?
This four-position configuration suits applications where a single actuator must reach two distinct mid-stroke locations without the complexity of two separate cylinders. The 45 mm and 55 mm stops are close enough to require careful valve sequencing, but the SCT handles this mechanically. If higher thrust is needed, stepping up to the 63 mm bore provides 1559 N of push per section at the same pressure. For replacement, match the 50 mm bore, both the 55 mm and 45 mm strokes, PT port thread, and the -S magnet option.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 55 + 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 SCT50X55X45S FAQ
It provides four discrete mechanical stops: 0 mm (fully retracted), 45 mm (section one extended), 55 mm (section two extended), and 100 mm (both sections extended). The positions are fixed by the two stroke lengths.
The force is generated per single piston section, matching the standard SC 50 mm bore. At 0.5 MPa, each section provides 982 N of push force and 825 N of pull force. The two sections do not combine their force for multi-position moves.
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