Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X55X55SFA
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X55X55SFA is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 55mm and 55mm give 3 controllable stop positions across a 110mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 155 mm
- Stroke 255 mm
- Total travel110 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X55X55SFA
The SCT63X55X55SFA is a double-acting multi-position cylinder that provides three precise mechanical stops along its 110 mm total stroke. With both piston sections sharing an identical 55 mm stroke, the rod extends to a mid-point of 55 mm and a fully extended position of 110 mm, making it ideal for two-stage clamping or sorting tasks. This model includes a built-in magnet for sensor mounting and a front rectangular flange for rigid panel attachment.
Each of the two 63 mm bore sections delivers 1559 N of push force at 0.5 MPa, rising to 2805 N at the maximum operating pressure of 0.9 MPa. The 20 mm diameter hard-chrome plated rod runs through a 28 mm air cushion at each section's end, ensuring smooth deceleration. The body length A measures 249 mm, providing a compact footprint for its multi-stop capability.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X55X55SFA Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X55X55SFA |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 55 / 55 mm |
| Total travel | 110 mm |
| Stop positions | 3 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 28 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) | 55 mm |
| P2 (both extended) | 110 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 SCT63X55X55SFA
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×55 | Stroke 1 (section 1) in mm. |
| ×55 | 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 SCT63X55X55SFA Is Used
Two-Stage Sorting Gate
Uses the 55 mm mid-stop and 110 mm full-stop to divert packages to two separate conveyor lanes. The magnet allows sensors to confirm each position before the next cycle.
Dual-Depth Press Fit
Installs a bushing to a partial depth at 55 mm, then completes the seating at 110 mm. The consistent force per section ensures both stages meet insertion spec.
Clamping with Intermediate Release
Clamps a workpiece at 110 mm, retracts to 55 mm for chip clearing or rotation, then returns to 110 mm. The FA flange keeps the cylinder stable under offset loads.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X55X55SFA the Right Cylinder?
Choose the SCT63X55X55SFA when your application needs three fixed stopping points without the complexity of servo controls. Compared to using two separate cylinders and external stops, this tandem unit guarantees repeatable positioning and simplifies plumbing. If higher force is required, consider stepping up to the 80 mm bore SCT80, which provides 2513 N of push per section at the same 0.5 MPa pressure.
For direct replacement, match the 63 mm bore, both 55 mm stroke sections, PT port thread, FA front flange mounting, and the -S magnet option. The FA flange bolts directly to a vertical panel, supporting the cylinder from the rod end. When ordering a replacement, ensure the sensor type (reed or solid-state) is compatible with the integrated magnetic piston band.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 55 + 55 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 SCT63X55X55SFA FAQ
This tandem cylinder provides 3 distinct rod positions: fully retracted (0 mm), mid-extension (55 mm), and full extension (110 mm). The total travel is the sum of the two identical 55 mm section strokes.
Yes, provided the original unit also has a 63 mm bore, 55 mm stroke on both sections, PT ports, an FA front flange, and the -S magnet. The mounting hole pattern on the FA flange and the body length must match the previous generation's dimensions.
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