Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X240S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X240S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 120mm and 240mm give 4 controllable stop positions across a 360mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1120 mm
- Stroke 2240 mm
- Total travel360 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X240S
The SCT40X120X240S is a tandem multi-position cylinder that delivers four fixed rod positions—0 mm, 120 mm, 240 mm, and the full 360 mm total travel—by pressurising its two piston sections independently or together. Each 40 mm bore section generates 628 N of push force at 0.5 MPa, and the 16 mm diameter rod with M12x1.25 threads provides robust guidance for offset loads.
A built-in magnet (the -S suffix) allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position confirmation at every stop. The cylinder body measures 235 mm in its base length, and the adjustable pneumatic cushion at each end absorbs energy smoothly, making it suitable for rapid multi-stop indexing tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X240S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X240S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 120 / 240 mm |
| Total travel | 360 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) | 120 mm |
| P2 (section 2) | 240 mm |
| P3 (both extended) | 360 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 SCT40X120X240S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×120 | Stroke 1 (section 1) in mm. |
| ×240 | 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 SCT40X120X240S Is Used
Two-Stage Part Diverting
Extends to 120 mm for lane one and 360 mm for lane two, giving a compact single-cylinder solution for conveyor sorting gates.
Multi-Depth Pressing
Provides a light touch at 120 mm and full insertion at 360 mm, ideal for assembly processes with sequential insertion depths.
Sequential Clamping
Clamps a part at 240 mm, then fully releases at 0 mm, with the 120 mm position available for a secondary holding step.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X120X240S the Right Cylinder?
Choose this 4-position model when your process requires two independent intermediate stops plus full retract and extend—common in two-stage clamping or sorting where a single cylinder with external stops would be bulkier. If your load demands higher force, step up to the 50 mm bore SCT50 series, which provides 982 N of push per section at 0.5 MPa. For direct replacement, match the 40 mm bore, both the 120 mm and 240 mm strokes, PT port thread, and the -S magnet suffix; the basic mount means no brackets are included, so order FA, FB, CA, CB, or LB kits separately if needed.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 120 + 240 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 SCT40X120X240S FAQ
It provides four discrete rod positions: fully retracted (0 mm), first section extended (120 mm), second section extended (240 mm), and both sections extended (360 mm). The stops are fixed by the two stroke lengths.
Yes, if your current cylinder has 120 mm and 240 mm strokes, a 40 mm bore, PT ports, and you need a built-in magnet for sensors. Verify the mounting style—this is the basic version without brackets.
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