Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 100mm give 4 controllable stop positions across a 125mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 125 mm
- Stroke 2100 mm
- Total travel125 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100
The SCT50X25X100 is a tandem double-acting cylinder that delivers four fixed rod positions from two independent piston sections on a common rod line. With stroke1 at 25 mm and stroke2 at 100 mm, the reachable stops are 0 mm (fully retracted), 25 mm, 100 mm, and the total travel of 125 mm. 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, driven through a 20 mm diameter piston rod.
Built on a durable tie-rod construction with a 243 mm body length, this genuine AirTAC unit uses adjustable pneumatic cushioning at both ends to manage deceleration across all four stop positions. The standard PT1/4 ports and M16x1.5 rod thread simplify integration, while the TPU seals ensure reliable operation in standard temperatures from -20 to +70 °C. It is a compact alternative to using two separate cylinders and external hard stops for a two-step linear sequence.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 25 / 100 mm |
| Total travel | 125 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) | 25 mm |
| P2 (section 2) | 100 mm |
| P3 (both extended) | 125 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 SCT50X25X100
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×100 | 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 SCT50X25X100 Is Used
Two-Way Part Sorting
Divert parts to two separate lanes using the 25 mm and 100 mm stops to position a gate or diverter arm precisely, eliminating the need for two single-stroke cylinders.
Two-Depth Press Operation
Perform a light pre-press at the 25 mm stop and a full-depth press at the 125 mm total travel position, controlling both actions with a single tandem cylinder.
Multi-Stop Product Stopping
Stop pallets or trays at two distinct locations along a conveyor line by extending the rod to the 100 mm or 125 mm positions, simplifying sensor and valve layouts.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X25X100 the Right Cylinder?
Choose the SCT50X25X100 when your process requires a compact, two-step linear actuator with stops at 25 mm and 100 mm without the complexity of multiple valves and external shock absorbers. If your force requirement is lower, stepping down to a 40 mm bore reduces the per-section push to 628 N at 0.5 MPa; for higher thrust, the 63 mm bore provides 1559 N. Always match the replacement to an AirTAC SCT with a 50 mm bore, both 25 mm and 100 mm strokes, PT port thread, and the same basic mounting configuration to guarantee fit and function.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 100 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 SCT50X25X100 FAQ
This 4-position cylinder provides discrete mechanical stops at 0 mm (fully retracted), 25 mm (first section extended), 100 mm (second section extended), and 125 mm (both sections extended). The positions are fixed by the two internal stroke lengths and are not infinitely adjustable.
The SCT50X25X100 integrates two strokes on a single common rod, saving mounting space and reducing the number of valves and fittings needed. It provides the same 982 N push force per actuated section at 0.5 MPa as a standard SC50 cylinder, but in a more compact, pre-aligned package for two-step linear moves.
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Standard models usually ship in 3-4 days.
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