Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X175S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X175S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 150mm and 175mm give 4 controllable stop positions across a 325mm total travel, with a Ø63mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Stroke 1150 mm
- Stroke 2175 mm
- Total travel325 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X175S
The AirTAC SCT63X150X175S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops: 0 mm (fully retracted), 150 mm, 175 mm, and the full 325 mm total travel. Built on a 63 mm bore with a 20 mm rod and M16x1.5 rod thread, each piston section generates 1559 N of push force at 0.5 MPa, scaling to 2805 N at the maximum operating pressure of 0.9 MPa.
This -S variant includes a built-in magnet, enabling direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for contactless position feedback. The cylinder body has an A(SCT) length of 249 mm and uses an adjustable air cushion (28 mm length) at both ends for smooth deceleration. Standard PT1/4 ports and TPU seals suit general industrial environments from -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X175S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X175S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø63 mm |
| Stroke 1 / Stroke 2 | 150 / 175 mm |
| Total travel | 325 mm |
| Stop positions | 4 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 (4)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 150 mm |
| P2 (section 2) | 175 mm |
| P3 (both extended) | 325 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 SCT63X150X175S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 63 | Bore size in mm (SCT range 32–100). |
| ×150 | Stroke 1 (section 1) in mm. |
| ×175 | 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 SCT63X150X175S Is Used
Four-Lane Diverter Gate
The four distinct stop positions (0, 150, 175, 325 mm) allow a single SCT cylinder to align a chute or gate with four separate conveyor lanes, simplifying the control architecture for high-speed sortation systems.
Multi-Depth Insertion Press
Achieve two different pressing depths in one cycle by stopping at 150 mm for a pre-insertion stage and 175 mm for final seating, with the 325 mm full retraction clearing the tooling area completely.
Staged Clamping Fixture
Use the 150 mm and 175 mm intermediate stops to apply a light pre-clamp force before engaging the full 325 mm travel for high-pressure clamping, all monitored by barrel-mounted sensors via the built-in magnet.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT63X150X175S the Right Cylinder?
Select the SCT63X150X175S when a single actuator must index a load to four distinct mechanical locations without the complexity of two separate cylinders and external hard stops. The unequal strokes (150 mm and 175 mm) provide four unique stopping planes, which is ideal for diverting parts to different conveyor lanes or multi-depth pressing. If your force requirement is lower, stepping down to a 50 mm bore reduces the per-section push to 982 N at 0.5 MPa, while stepping up to an 80 mm bore increases it to 2513 N.
For a drop-in replacement, match the 63 mm bore, both strokes (150 mm and 175 mm), PT port thread, and the -S magnet option. The basic mounting configuration accepts standard SCT foot (LB) or flange (FA/FB) kits; if your application involves a pivoting load, consider a model with a CA or CB rear clevis. With a combined stroke exceeding 300 mm, ensure the rod is guided or the load is centered to prevent side-load binding and premature seal wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 150 + 175 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 SCT63X150X175S FAQ
This tandem cylinder provides four distinct mechanical stops because its two strokes are unequal. The rod positions are 0 mm (fully retracted), 150 mm (first section extended), 175 mm (second section extended), and 325 mm (both sections fully extended).
Yes, if your sequence requires only the four discrete positions defined by the 150 mm and 175 mm strokes. The SCT eliminates the need to synchronize two actuators and external hard stops, but it does not double the force output; each section provides the standard 1559 N push at 0.5 MPa, identical to a single SC63 cylinder.
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