Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X600X40S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X600X40S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 600mm and 40mm give 4 controllable stop positions across a 640mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1600 mm
- Stroke 240 mm
- Total travel640 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X600X40S
The SCT40X600X40S is a tandem multi-position cylinder that delivers four distinct, repeatable stop positions along its stroke: 0 mm (fully retracted), 40 mm, 600 mm, and the full combined travel of 640 mm. Each of its two 40 mm bore piston sections generates 628 N of push force at 0.5 MPa, making it suitable for sequenced clamping or two-stage material handling where intermediate and extended positions are required.
This model features 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 16 mm diameter piston rod provides robust guidance, though with the 600 mm section being a non-standard, made-to-order stroke exceeding 500 mm, external guiding is strongly advised to prevent rod buckling under side loads. The cylinder body has a base length of 235 mm and uses PT1/4 ports.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X600X40S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X600X40S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 600 / 40 mm |
| Total travel | 640 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). This configuration exceeds the 500 mm standard section stroke, so it is a non-standard / made-to-order build. 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) | 600 mm |
| P2 (section 2) | 40 mm |
| P3 (both extended) | 640 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 SCT40X600X40S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×600 | Stroke 1 (section 1) in mm. |
| ×40 | 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 SCT40X600X40S Is Used
Two-Stage Part Diverting
Extends to 40 mm for a low-profile inspection gate, then to 640 mm to divert rejected parts onto a separate conveyor lane, using the magnet for end-of-stroke confirmation.
Sequential Clamping & Ejection
First applies a light clamp at the 40 mm position, then fully extends to 640 mm to eject the finished workpiece from a fixture after machining.
Multi-Depth Pressing
Provides a precise 40 mm pre-press stop and a deep 640 mm final forming stroke in a single compact tandem unit, with sensor feedback at each position.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X600X40S the Right Cylinder?
This SCT configuration replaces the complexity of two separate cylinders with external hard stops, offering a compact, pre-aligned solution for a 40 mm and 600 mm stroke sequence. When sizing, if the 628 N push force per section at 0.5 MPa is insufficient, stepping up to a 50 mm bore SCT provides 982 N per section. For a direct replacement, match the 40 mm bore, both the 600 mm and 40 mm strokes, the PT port thread, and the -S magnet option. Given the long 600 mm stroke section, always evaluate the rod's buckling load and implement a linear guide or external support to protect the 16 mm rod from bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 600 + 40 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 SCT40X600X40S FAQ
It provides four discrete mechanical stops: 0 mm (home), 40 mm, 600 mm, and the full combined travel of 640 mm. These are fixed by the cylinder's two section strokes and are not infinitely adjustable.
No, like all standard pneumatic cylinders, it will drift if pressure is lost or a valve is centered. To securely hold a load at any of its four positions without live pressure, you must add an external rod lock or a pilot-operated check valve.
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