Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X250S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X250S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 250mm give 4 controllable stop positions across a 300mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 2250 mm
- Total travel300 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X250S
The SCT40X50X250S tandem cylinder delivers four fixed rod positions—0 mm, 50 mm, 250 mm, and the full 300 mm combined travel—from a single tie-rod body. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, making it a compact alternative to two separate actuators for sequenced two-depth operations.
A built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors along the barrel for end-of-stroke or mid-position confirmation. The 16 mm diameter rod and 21 mm adjustable air cushion at each end help manage kinetic energy, while the 235 mm body length A(SCT) keeps the footprint predictable for machine layout.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X250S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X250S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 250 mm |
| Total travel | 300 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) | 50 mm |
| P2 (section 2) | 250 mm |
| P3 (both extended) | 300 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 SCT40X50X250S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×250 | 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 SCT40X50X250S Is Used
Two-Depth Pick-and-Place
Extend to 50 mm for a shallow grip on a tray, then to 300 mm total travel to place the part into a deeper nest, using the four discrete stops for precise positioning.
Diverter Gate with Intermediate Stop
Use the 0 mm, 50 mm, and 250 mm positions to route packages to three separate conveyor lanes from a single actuator, with sensors confirming each gate angle.
Staged Clamping or Pressing
Apply a light pre-clamp at 50 mm extension, then a full-power press at 300 mm total stroke, with the per-section 628 N push force handling the workholding sequence.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X250S the Right Cylinder?
This four-stop unit replaces setups that would otherwise need two individual cylinders and external hard stops. With strokes of 50 mm and 250 mm, it suits processes where a short advance feeds a part and a longer stroke completes the transfer. If the 628 N push per section at 0.5 MPa is marginal, stepping up to the 50 mm bore SCT50 provides 982 N per section.
For replacement, match the 40 mm bore, both strokes (50 mm and 250 mm), PT port thread, and the -S magnet option. The SCT uses tie-rod mounting accessories: basic foot (LB), front/rear flange (FA/FB), or rear clevis (CA/CB). Because the 250 mm section stroke is moderate, ensure the rod is guided if the load applies a significant side moment.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 250 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 SCT40X50X250S FAQ
It provides four distinct mechanical stops: 0 mm (fully retracted), 50 mm (first section extended), 250 mm (second section extended), and 300 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely variable.
Yes, when the application requires two fixed stroke lengths from a single rod line. You must match the 40 mm bore, the 50 mm and 250 mm strokes, the PT port thread, and the -S magnet option. Mounting accessories from the SCT tie-rod set (FA, FB, CA, CB, LB) must also align with your machine interface.
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