Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X20S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X20S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 20mm give 4 controllable stop positions across a 120mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1100 mm
- Stroke 220 mm
- Total travel120 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X20S
The SCT40X100X20S is a tandem multi-position cylinder providing four precise, discrete stop locations at 0 mm, 20 mm, 100 mm, and the full combined travel of 120 mm. Each piston section delivers a push force of 628 N at 0.5 MPa, making it suitable for tasks requiring two different short extension depths from a single compact unit.
A built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke or intermediate position sensing. The 16 mm diameter rod and PT1/4 ports ensure robust connection, while the 21 mm air cushion in each section provides smooth deceleration at every stop.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X20S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X20S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 100 / 20 mm |
| Total travel | 120 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) | 100 mm |
| P2 (section 2) | 20 mm |
| P3 (both extended) | 120 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 SCT40X100X20S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT40X100X20S Is Used
Two-Depth Pressing
Achieves a shallow 20 mm pre-press followed by a deeper 100 mm main press stroke, ideal for two-stage forming or insertion operations.
Dual-Position Sorting
Diverts parts to two different conveyor lanes using the 20 mm and 100 mm stop points, controlled by pressurizing the front or rear piston section.
Multi-Stop Feeding
Advances a workpiece to a 20 mm staging position, then moves it the additional 100 mm for final placement, all from one compact actuator.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X20S the Right Cylinder?
Select the SCT40X100X20S when an application calls for two distinct extension lengths without the complexity of two separate cylinders. It delivers the same per-section force as a standard SC40, with 628 N of push at 0.5 MPa. If higher thrust is needed, stepping up to a 50 mm bore provides 982 N. For direct replacement, match the 40 mm bore, both the 100 mm and 20 mm strokes, PT port thread, and the integrated magnet option. The basic mounting style keeps installation simple, but flange or foot mounts can be added if required.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 100 + 20 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 SCT40X100X20S FAQ
This tandem cylinder provides 4 discrete mechanical stops at 0 mm, 20 mm, 100 mm, and the total travel of 120 mm. The positions are fixed by the two stroke lengths and cannot be infinitely varied.
Yes, it replaces two separate 40 mm bore cylinders with 100 mm and 20 mm strokes. Ensure the replacement matches the PT port thread and the -S magnet option for sensor compatibility.
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