Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X20X20
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X20X20 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 20mm and 20mm give 3 controllable stop positions across a 40mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 120 mm
- Stroke 220 mm
- Total travel40 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X20X20
The SCT40X20X20 is a tandem multi-position cylinder providing three distinct rod positions: fully retracted (0 mm), an intermediate stop at 20 mm, and full extension at 40 mm. Each piston section generates a push force of 628 N at 0.5 MPa, making it a compact solution for light sorting or diverting tasks where two fixed stopping points are needed.
Built on a 40 mm bore tie-rod body with a 16 mm diameter rod and M12x1.25 rod thread, this cylinder features a 21 mm adjustable air cushion on each end for smooth deceleration. The body length A is 235 mm, and it operates on filtered air from 0.15 to 1.0 MPa.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X20X20 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X20X20 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 20 / 20 mm |
| Total travel | 40 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 20 mm |
| P2 (both extended) | 40 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 SCT40X20X20
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×20 | Stroke 1 (section 1) in mm. |
| ×20 | 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 SCT40X20X20 Is Used
Two-Way Part Sorting
Directs parts to one of two lanes by stopping at the 20 mm or 40 mm position, simplifying pneumatic circuit design for simple diverter gates.
Dual-Depth Stop Gate
Acts as a mechanical gate with two open heights. The rod stops at 20 mm for small items and extends fully to 40 mm for larger packages.
Two-Stage Clamping
Applies a light pre-clamp at the 20 mm stroke before a full-force clamp at 40 mm, protecting delicate assemblies from sudden impact.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X20X20 the Right Cylinder?
Choose the SCT40X20X20 when your application requires two fixed stopping points without the complexity of two separate cylinders and external stops. If higher force is needed, consider stepping up to the 50 mm bore SCT, which provides 982 N of push per section at the same 0.5 MPa pressure. For a direct replacement, match the 40 mm bore, both 20 mm strokes, PT port thread, and basic mounting configuration.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 20 + 20 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 SCT40X20X20 FAQ
It provides three distinct mechanical stops: 0 mm (fully retracted), 20 mm (first section extended), and 40 mm (both sections extended, total travel).
Each of the two piston sections delivers a push force of 628 N at 0.5 MPa and a pull force of 528 N. The force is per section, not combined.
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 SCT40X20X20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.