Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X75S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X75S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 450mm and 75mm give 4 controllable stop positions across a 525mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1450 mm
- Stroke 275 mm
- Total travel525 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X75S
The SCT40X450X75S is a double-acting multi-position cylinder that delivers four fixed rod positions from its tandem piston design: fully retracted (0 mm), the first section extended (75 mm), the second section extended (450 mm), and both sections extended for a total travel of 525 mm. Each piston section provides a push force of 628 N at 0.5 MPa, scaling to 1130 N at the maximum operating pressure of 0.9 MPa, making it suitable for sequenced clamping or multi-depth insertion tasks.
This model features a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the 16 mm diameter rod's tie-rod barrel for reliable end-of-stroke or intermediate position detection. The cylinder body has an A-length of 235 mm, uses PT1/4 ports, and includes an adjustable air cushion with a 21 mm cushion length on each section to manage deceleration at the 450 mm stroke.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X75S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X75S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 450 / 75 mm |
| Total travel | 525 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) | 450 mm |
| P2 (section 2) | 75 mm |
| P3 (both extended) | 525 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 SCT40X450X75S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×450 | Stroke 1 (section 1) in mm. |
| ×75 | 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 SCT40X450X75S Is Used
Two-Depth Part Insertion
Uses the 75 mm and 525 mm extended positions to insert components to two different controlled depths in an assembly fixture, ensuring consistent placement without overtravel.
Dual-Stop Gate Actuation
Operates a material gate with three positions: closed (0 mm), a partial bypass opening (75 mm), and a full-flow open position (525 mm) for routing bulk materials on a conveyor line.
Sequential Clamping Station
Provides a light pre-clamp at the 75 mm position before applying full clamping force at the 525 mm total travel, protecting delicate workpieces during a two-stage machining process.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X75S the Right Cylinder?
Choosing this SCT model is ideal when an application requires two distinct extended positions plus a retracted home, eliminating the complexity and alignment issues of using two separate 40 mm bore cylinders with external stops. The 450 mm stroke section is substantial; ensure the guided load is supported to prevent side-loading and rod bending, especially when the rod is fully extended to 525 mm. If higher force is needed, stepping up to a 50 mm bore provides 982 N of push per section at 0.5 MPa.
As a direct replacement, match this unit with another AirTAC SCT40X450X75S, verifying the PT port thread, the built-in magnet for sensor compatibility, and the basic mounting configuration. This tie-rod cylinder is not interchangeable with ISO 15552 profiles.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 450 + 75 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 SCT40X450X75S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 75 mm (first section extended), 450 mm (second section extended), and 525 mm (both sections extended). The positions are fixed by the two stroke lengths and are not infinitely adjustable.
The SCT integrates two piston sections on a single common rod, guaranteeing coaxial alignment and reducing mounting hardware. It provides three or four fixed positions from just two pneumatic circuits, whereas two independent cylinders would require complex bracketry, external hard stops, and more valving to achieve the same discrete positioning.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCT Multi-Position Cylinders
Request a Quote for Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X450X75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.