Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X100
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X100 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 100mm give 4 controllable stop positions across a 175mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 175 mm
- Stroke 2100 mm
- Total travel175 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X100
The SCT40X75X100 is a tandem multi-position cylinder that provides four distinct mechanical stops along its 175 mm total stroke. By pressurising the two 40 mm bore sections individually or together, the rod extends to 0 mm (retracted), 75 mm, 100 mm, or the full 175 mm. Each actuated piston section generates 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa.
This model uses a 16 mm diameter rod and PT1/4 ports. The body length A(SCT) is 235 mm, and the adjustable air cushion at each end is 21 mm long. It operates on standard filtered air at 0.15-1.0 MPa within a -20 to +70 °C temperature range using TPU seals.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X100 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X100 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 75 / 100 mm |
| Total travel | 175 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) | 75 mm |
| P2 (section 2) | 100 mm |
| P3 (both extended) | 175 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 SCT40X75X100
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×75 | 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 SCT40X75X100 Is Used
Two-Stage Sorting Gate
Divert packages to three separate conveyor lanes using the 75 mm and 175 mm extended positions, with the 100 mm stop acting as a verification checkpoint.
Multi-Depth Insertion
Press a component to two distinct depths (75 mm and 175 mm) in one cycle, using the 100 mm position for a mid-stroke dwell to allow material to settle.
Sequential Part Feeding
Advance parts in a magazine with a three-step motion: a short 75 mm push to separate, a 100 mm push to stage, and the full 175 mm stroke to load the nest.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X75X100 the Right Cylinder?
Choose the SCT40X75X100 when your application needs a compact, single-cylinder solution for four fixed positions, eliminating the complexity of two separate cylinders and external hard stops. The 40 mm bore provides 628 N of push force per section at 0.5 MPa. If your load requires more thrust, stepping up to the 50 mm bore (SCT50X75X100) increases the per-section push force to 982 N at the same pressure.
For a direct replacement, match the 40 mm bore, both the 75 mm and 100 mm strokes, PT port thread, and basic mounting configuration. Since the longer combined stroke can increase side-loading moments, ensure the rod is adequately guided if the load is not perfectly axial.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 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 SCT40X75X100 FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm (section 1 extended), 100 mm (section 2 extended), and 175 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The force is generated per actuated piston section. For the 40 mm bore, a single section provides 628 N of push force at 0.5 MPa. The total force does not double when both sections are pressurised to reach the 175 mm position; the second section primarily provides the additional stroke length.
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