Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X220S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X220S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 80mm and 220mm give 4 controllable stop positions across a 300mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 180 mm
- Stroke 2220 mm
- Total travel300 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X220S
The AirTAC SCT40X80X220S is a multi-position tandem cylinder that delivers four distinct, repeatable rod stops without external hard stops or complex controls. By pressurising its two 40 mm bore sections independently or together, you get precise positions at 0 mm (fully retracted), 80 mm, 220 mm, and the full combined travel of 300 mm. Each actuated section generates 628 N of push force at 0.5 MPa, rising to 1130 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet (-S suffix), allowing easy mounting of CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the tie-rod barrel for end-of-stroke or intermediate position sensing. The 16 mm diameter piston rod and 21 mm adjustable air cushion in each section ensure smooth deceleration, while the PT1/4 port threads keep connections standard. The body length A(SCT) is 235 mm, making it compact for its 300 mm total travel.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X220S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X220S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 80 / 220 mm |
| Total travel | 300 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) | 80 mm |
| P2 (section 2) | 220 mm |
| P3 (both extended) | 300 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 SCT40X80X220S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×80 | Stroke 1 (section 1) in mm. |
| ×220 | 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 SCT40X80X220S Is Used
3-Way Diverter Gates
Use the four discrete positions to direct parts to three separate conveyor lanes or chutes from a single feed point, with the retracted position serving as a home or fourth lane.
Multi-Depth Pressing
Achieve two distinct pressing depths (80 mm and 300 mm) in a single compact actuator for assembly operations requiring a partial insert followed by a full-depth press.
Staged Clamping
Apply a light clamp at the 220 mm extension for positioning, then fully retract to 80 mm for a high-force secondary grip, all controlled by simple 5/3 valves.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X80X220S the Right Cylinder?
Select the SCT when your application needs two or three intermediate stopping points that must be mechanically fixed and highly repeatable, rather than approximated by valve timing. This 40 mm bore model suits moderate force tasks; if you need more push, the SCT50 series provides 982 N per section at the same 0.5 MPa. For a lighter, more compact solution, the SCT32 delivers 402 N. The SCT40X80X220S is a direct replacement for another AirTAC SCT of identical bore, both strokes, PT ports, and the -S magnet option. When a section stroke exceeds 250 mm, as the 220 mm section does here, ensure the rod is adequately guided to prevent side-loading and bending under high thrust.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 80 + 220 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 SCT40X80X220S FAQ
This tandem cylinder provides four discrete mechanical stops: 0 mm (fully retracted), 80 mm (first section extended), 220 mm (second section extended), and 300 mm (both sections extended). The positions are fixed by the cylinder's internal structure, not by sensors.
Yes, in many cases. The SCT40X80X220S integrates two strokes into one rod line, saving space and eliminating the need to synchronise two separate actuators. It is a direct form-fit replacement for another AirTAC SCT with the same bore, 80 mm and 220 mm strokes, PT ports, and a magnet.
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