Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X115S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X115S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 115mm give 4 controllable stop positions across a 140mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 125 mm
- Stroke 2115 mm
- Total travel140 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X115S
The SCT40X25X115S tandem cylinder delivers four fixed rod positions—0 mm, 25 mm, 115 mm, and the combined total travel of 140 mm—by independently pressurizing its two piston sections. Each 40 mm bore section generates a push force of 628 N at 0.5 MPa, rising to 1130 N at 0.9 MPa, driven through a 16 mm diameter piston rod with M12x1.25 threads.
A built-in magnet (denoted by the -S suffix) allows direct clamping of CMSG, DMSG, or EMSG reed and solid-state sensors to the tie-rod barrel for non-contact position feedback. The cylinder body length A(SCT) is 235 mm with a 21 mm adjustable air cushion at each end, making it a compact solution for multi-stop diverting or two-depth pressing where sensor confirmation is essential.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X115S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X115S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 25 / 115 mm |
| Total travel | 140 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) | 25 mm |
| P2 (section 2) | 115 mm |
| P3 (both extended) | 140 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 SCT40X25X115S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×115 | 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 SCT40X25X115S Is Used
Four-Way Part Sorting
Use the four discrete positions (0, 25, 115, 140 mm) to direct parts into four separate chutes or conveyors from a single feed point, simplifying actuator count.
Two-Depth Pressing
Achieve a shallow 25 mm pre-press and a deeper 115 mm final press stroke in one sequence, with the 140 mm full-retract position clearing the tooling area completely.
Sensor-Controlled Glue Dispensing
The built-in magnet and sensor groove let you mount CMSG/DMSG switches to confirm each of the four stop positions, ensuring precise bead application at two different Z-heights.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X115S the Right Cylinder?
Choose this SCT model when your process requires four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 25 mm and 115 mm strokes create a compact 140 mm total envelope, ideal for sorting gates or dual-depth insertion tasks. If higher force is needed, stepping up to the 50 mm bore SCT50 series provides 982 N of push per section at 0.5 MPa.
For a direct replacement, match the 40 mm bore, both stroke lengths (25 mm and 115 mm), PT port threads, basic mounting, and the -S magnet option. Note that the SCT is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profiles. Ensure the 16 mm rod is adequately supported if the 140 mm total extension applies significant side loads.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 115 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 SCT40X25X115S FAQ
This tandem cylinder provides four discrete mechanical stops: fully retracted (0 mm), section one extended (25 mm), section two extended (115 mm), and both sections extended for the total travel of 140 mm.
Yes, if your application requires only the 25 mm and 115 mm strokes. The SCT40X25X115S integrates both moves into a single tie-rod body, reducing mounting hardware and eliminating the need to synchronize two separate cylinders. Ensure you match the PT ports and the -S magnet option for sensor compatibility.
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