Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X65S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X65S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 100mm and 65mm give 4 controllable stop positions across a 165mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1100 mm
- Stroke 265 mm
- Total travel165 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X65S
The SCT40X100X65S is a double-acting multi-position tandem cylinder that provides four fixed rod positions: 0 mm (fully retracted), 65 mm, 100 mm, and 165 mm (full extension). By pressurising one or both of its 40 mm bore sections independently, you achieve repeatable mechanical stops without complex servo controls. Each actuated section delivers 628 N of push force at 0.5 MPa, rising to 1130 N at 0.9 MPa, driven through a 16 mm diameter piston rod.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position feedback. The cylinder body has a base length of 235 mm (A dimension) and uses PT1/4 ports with an M12x1.25 rod thread. Its 21 mm adjustable air cushion at each end section decelerates the load smoothly, protecting the assembly from impact damage during high-speed operation.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X65S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X65S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 100 / 65 mm |
| Total travel | 165 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) | 65 mm |
| P3 (both extended) | 165 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 SCT40X100X65S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×100 | Stroke 1 (section 1) in mm. |
| ×65 | 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 SCT40X100X65S Is Used
Two-Stage Part Diverting
Use the four positions (0, 65, 100, 165 mm) to guide parts into three separate lanes on a conveyor. The fixed mechanical stops ensure the diverter gate aligns precisely with each chute every cycle.
Multi-Depth Press-Fit Assembly
Insert components to two distinct depths in sequence. The first section extends to 65 mm for a locating press, and the second section adds 100 mm of travel to complete a full-depth seating operation, all with one compact actuator.
Tiered Pallet Stop & Release
Deploy a multi-height stop blade to manage pallets of different sizes. Retract fully to let large pallets pass, extend to 65 mm for medium pallets, or extend fully to 165 mm to halt small pallets, with sensors confirming each position via the built-in magnet.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X100X65S the Right Cylinder?
Choose the SCT40 tandem when your application needs two or three intermediate stop points that must be mechanically fixed and highly repeatable, replacing the complexity of two separate cylinders and external hard stops. This 40 mm bore provides 628 N of push per section at standard factory pressure; if your load requires more force, stepping up to the 50 mm bore (SCT50, 982 N push) is a direct path, while the 32 mm bore (402 N push) suits lighter, more compact stations. For a drop-in replacement, match the 40 mm bore, both strokes (100 mm and 65 mm), PT port thread, and the integrated magnet (-S).
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 100 + 65 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 SCT40X100X65S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 65 mm (first section extended), 100 mm (second section extended), and 165 mm (both sections extended, total travel). It does not offer infinitely variable positioning.
Yes, in applications requiring two fixed intermediate positions. The SCT40X100X65S consolidates two strokes onto a single rod line, saving space and eliminating the need to synchronise two separate actuators. Ensure the replacement matches the 40 mm bore, 100 mm and 65 mm strokes, PT ports, and the -S magnet option.
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