Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X400S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X400S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 50mm and 400mm give 4 controllable stop positions across a 450mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 150 mm
- Stroke 2400 mm
- Total travel450 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X400S
The AirTAC SCT40X50X400S multi-position cylinder provides four distinct mechanical stops along its 450 mm total travel by combining a 50 mm front stroke with a 400 mm rear stroke. Each double-acting piston section delivers about 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa), making it suitable for two-depth pressing or multi-stage feeding where intermediate positions must be hit repeatedly without external stops.
A built-in magnet ring on the 16 mm diameter piston rod allows direct mounting of CMSG/DMSG/EMSG sensors to confirm arrival at any of the four positions. The tie-rod construction houses a 21 mm adjustable air cushion in each section to manage end-of-stroke impact, and the PT1/4 ports keep flow paths compact within the 235 mm base body length.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X400S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X400S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 50 / 400 mm |
| Total travel | 450 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) | 50 mm |
| P2 (section 2) | 400 mm |
| P3 (both extended) | 450 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 SCT40X50X400S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×50 | Stroke 1 (section 1) in mm. |
| ×400 | 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 SCT40X50X400S Is Used
Two-Depth Pressing
Uses the 50 mm and 450 mm stops to press components to a shallow pre-form depth and a final full-depth position in one cycle, eliminating a second press station.
Multi-Stop Part Feeding
Advances parts along a track with stops at 50 mm, 400 mm, and 450 mm, letting a single cylinder handle three distinct feed pitches for different component lengths.
3-Way Gate Diverting
Positions a diverter gate at retracted (0 mm), mid (400 mm), or full-forward (450 mm) to sort product into three lanes, with the 50 mm stop acting as a home offset.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X50X400S the Right Cylinder?
Choose the SCT40X50X400S when your application needs four fixed rod positions without the complexity of two separate cylinders and external hard stops. If the 628 N per-section push force at 0.5 MPa is marginal, stepping up to a 50 mm bore SCT raises it to 982 N per section. For replacement, match the 40 mm bore, both 50 mm and 400 mm strokes, PT thread, and the -S magnet option; the basic mount means no flange or clevis is attached.
Because the rear section stroke reaches 400 mm, consider external guiding or a rod-alignment coupler if the load applies significant side force—long tandem rod extensions can amplify bending moments at full extension.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 50 + 400 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 SCT40X50X400S FAQ
The rod stops at 0 mm (fully retracted), 50 mm (front section extended), 400 mm (rear section extended), and 450 mm (both sections extended). The 50 mm and 400 mm stops are reached by pressurising only one section at a time.
Yes, if the original is a genuine AirTAC SCT with a 40 mm bore, 50 mm front stroke, 400 mm rear stroke, PT ports, and the -S magnet suffix. Check that your mounting style matches—this code has no bracket (basic mount), so swap over any existing FA/FB/LB hardware.
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