Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 50mm give 4 controllable stop positions across a 130mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 180 mm
- Stroke 250 mm
- Total travel130 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X50S
The SCT40X80X50S delivers four discrete rod positions—0 mm, 80 mm, 50 mm, and 130 mm total travel—from a single tie-rod body. Each 40 mm bore section provides 628 N of push force at 0.5 MPa, making it a compact alternative to two separate cylinders for sequenced stopping tasks.
This model includes a built-in magnet, so CMSG/DMSG/EMSG sensors clamp directly onto the barrel for non-contact position confirmation at each stop. The 16 mm diameter rod and 21 mm air cushion at both ends handle the dynamic loads of multi-stop cycling, with a body length A(SCT) of 235 mm.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 80 / 50 mm |
| Total travel | 130 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) | 80 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 130 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 SCT40X80X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT40X80X50S Is Used
Two-Stage Diverter Gate
Uses the 80 mm stroke to swing a gate fully open and the 50 mm stroke for a partial-open bypass position, plus the combined 130 mm for a third flow path.
Multi-Depth Pressing
Controls a press platen to two distinct working depths (80 mm and 50 mm) with a full-retract home position, eliminating manual depth adjustments.
Sequential Part Feeding
Advances a pusher 80 mm to move a part into station one, then an additional 50 mm (130 mm total) to transfer it to station two, with a separate 50 mm retract step.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X50S the Right Cylinder?
Choose the SCT when your process needs four fixed stop points without the complexity of servo control or multiple actuators. The 80 mm and 50 mm strokes give you asymmetric positions ideal for a two-step feed followed by a different return offset. If you need more force per section, step up to the 50 mm bore (982 N push at 0.5 MPa).
For a direct replacement, match the 40 mm bore, both strokes (80 mm and 50 mm), PT ports, basic mounting, and the -S magnet option. When either stroke reaches 300 mm or beyond, assess the rod for side-loading and consider an external guide to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 50 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 SCT40X80X50S FAQ
It provides four distinct rod positions: fully retracted (0 mm), first section extended (80 mm), second section extended (50 mm), and both sections extended for the total travel of 130 mm.
Yes, if your sequence requires two fixed strokes from a single rod line. It saves space and plumbing compared to two individual cylinders, but the per-section force remains 628 N push at 0.5 MPa—it does not double the force output.
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