Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X30
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X30 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 40mm and 30mm give 4 controllable stop positions across a 70mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 140 mm
- Stroke 230 mm
- Total travel70 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X30
The SCT50X40X30 is a tandem multi-position cylinder that delivers four distinct rod positions from two strokes on a single axis: 0 mm (fully retracted), 40 mm, 30 mm, and the total travel of 70 mm. By pressurising the two piston sections independently or together, you get a compact 4-stop actuator without the complexity of two separate cylinders and external hard stops.
Each 50 mm bore section generates 982 N of push force at 0.5 MPa, rising to 1767 N at the maximum operating pressure of 0.9 MPa. The 20 mm diameter piston rod and 21 mm long adjustable air cushion at each end help manage end-of-stroke impact. With a body length A(SCT) of 243 mm, this tie-rod design fits into spaces where a pair of standard cylinders would not.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X30 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X30 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 40 / 30 mm |
| Total travel | 70 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) | 40 mm |
| P2 (section 2) | 30 mm |
| P3 (both extended) | 70 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 SCT50X40X30
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×40 | Stroke 1 (section 1) in mm. |
| ×30 | 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 SCT50X40X30 Is Used
Two-Stage Sorting Gate
Uses the 40 mm and 30 mm strokes to divert parts to two different conveyor lanes. The four positions allow a home, partial-extend, alternate-partial, and full-extend sorting logic.
Dual-Depth Pressing
Provides two controlled pressing depths in one compact unit. The 40 mm stroke sets the first depth, and the 30 mm stroke adds a secondary, shallower press for delicate components.
Multi-Stop Clamping
Clamps a workpiece at a 40 mm standoff for one operation, then retracts to a 30 mm position for a secondary process, all with a single cylinder body.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X40X30 the Right Cylinder?
Choose the SCT50X40X30 when your application needs four fixed stop positions with strokes of 40 mm and 30 mm. This tandem unit replaces two separate cylinders and external stop hardware, reducing alignment complexity and overall footprint. If your force requirement is lower, the 40 mm bore SCT40X40X30 provides 628 N push per section at 0.5 MPa; for higher force, the 63 mm bore delivers 1559 N. To replace an existing SCT, match the 50 mm bore, both strokes (40 mm and 30 mm), PT port thread, and basic mounting. For strokes over 300 mm, consider external guides to protect the rod from side loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 40 + 30 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 SCT50X40X30 FAQ
This model provides four discrete rod positions: 0 mm (retracted), 40 mm, 30 mm, and the combined 70 mm. The unequal strokes create four distinct stops, selected by pressurising section one, section two, or both.
Each 50 mm bore piston section delivers 982 N of push force and 825 N of pull force at 0.5 MPa. The force does not double when both sections are pressurised; each acts on its own stroke segment.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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