Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X40S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X40S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 90mm and 40mm give 4 controllable stop positions across a 130mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 190 mm
- Stroke 240 mm
- Total travel130 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X40S
The SCT40X90X40S is a double-acting multi-position cylinder that delivers four fixed rod positions—0 mm, 40 mm, 90 mm, and the full combined travel of 130 mm—by pressurizing its two piston sections independently. Each section generates 628 N of push force at 0.5 MPa, rising to 1130 N at 0.9 MPa, driven through a 16 mm diameter rod. The built-in magnet allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position feedback.
With a 21 mm adjustable air cushion at each end and a body length A of 235 mm, this genuine AirTAC actuator suits compact multi-stop tasks where electronic sensing is required. The PT1/4 ports and M12x1.25 rod thread ensure straightforward pneumatic integration, while the TPU seals provide reliable operation from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X40S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X40S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 90 / 40 mm |
| Total travel | 130 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) | 90 mm |
| P2 (section 2) | 40 mm |
| P3 (both extended) | 130 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 SCT40X90X40S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×90 | 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 SCT40X90X40S Is Used
Two-Stage Sorting Gate
Use the four positions to divert packages to three separate conveyor lanes. Retract to 0 mm for lane one, extend to 40 mm for lane two, 90 mm for lane three, and full 130 mm stroke for a reject chute.
Multi-Depth Pressing
Control a press platen to two different insertion depths in one cycle. The 40 mm stop sets a shallow pre-form depth, while the 90 mm stop completes the full-depth press, with sensors confirming each position via the built-in magnet.
Sequential Part Feeding
Feed components in a three-step sequence from a magazine. The rod advances to 40 mm to separate the first part, 90 mm to present the second, and 130 mm to clear the nest, all sensed by a single DMSG switch on the barrel.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X40S the Right Cylinder?
Choose the SCT40X90X40S when your application needs four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 40 mm bore provides 628 N of push per section at 0.5 MPa; if your load requires more thrust, stepping up to the 50 mm bore delivers 982 N per section at the same pressure. For a direct replacement, match the 40 mm bore, both strokes of 90 mm and 40 mm, PT thread, basic mounting, and the -S magnet option—never substitute an SC or SCD model, as they lack the tandem multi-position architecture.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 90 + 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 SCT40X90X40S FAQ
It provides four discrete mechanical stop positions: 0 mm (fully retracted), 40 mm (section 2 extended), 90 mm (section 1 extended), and 130 mm (both sections extended). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
No. A standard SC cylinder provides only two positions. You must replace it with another SCT tandem cylinder matching the 40 mm bore, 90 mm and 40 mm strokes, PT ports, basic mounting, and the -S magnet option to retain the four-position functionality and sensor compatibility.
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