Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 200mm give 4 controllable stop positions across a 225mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 125 mm
- Stroke 2200 mm
- Total travel225 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200S
The SCT40X25X200S tandem cylinder provides four fixed rod positions—0 mm, 25 mm, 200 mm, and the combined 225 mm—by independently pressurizing its two piston sections. Each section produces 628 N of push force at 0.5 MPa, rising to 1130 N at 0.9 MPa, driven through a 16 mm diameter rod with PT1/4 ports.
A built-in magnet (the -S suffix) allows CMSG, DMSG, or EMSG sensors to clamp directly onto the tie-rod barrel for non-contact position confirmation at each stop. The cylinder uses a standard TPU seal for a -20 to +70 °C operating range and features an adjustable air cushion (21 mm length) at both ends for smooth deceleration.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 25 / 200 mm |
| Total travel | 225 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) | 25 mm |
| P2 (section 2) | 200 mm |
| P3 (both extended) | 225 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 SCT40X25X200S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×200 | 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 SCT40X25X200S Is Used
Two-Stage Sorting Gate
Uses the 25 mm and 200 mm stops to divert packages to three separate conveyor lanes from a single actuator, simplifying pneumatic control.
Multi-Depth Pressing
Delivers a light touch at 25 mm extension for delicate parts and a full 225 mm stroke for deep insertion, all from one compact tandem cylinder.
Sequential Clamping Fixture
Positions a clamp jaw at 25 mm for initial part location, then advances to 200 mm for final clamping, with sensor feedback confirming each step.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200S the Right Cylinder?
Choose the SCT when a single actuator must deliver multiple fixed stop positions without the complexity of two separate cylinders and external hard stops. The 40 mm bore provides 628 N of push per section at 0.5 MPa; if higher force is needed, stepping up to the 50 mm bore delivers 982 N per section at the same pressure. For a direct replacement, match the 40 mm bore, both the 25 mm and 200 mm strokes, PT port thread, and the -S magnet option. Since the 200 mm section stroke is moderate, ensure the load is guided if side forces are present to protect the 16 mm rod from bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 200 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 SCT40X25X200S FAQ
It provides 4 discrete mechanical stops: fully retracted (0 mm), the first section extended (25 mm), the second section extended (200 mm), and both sections extended for the total travel of 225 mm. The position is selected by pressurizing the corresponding air ports.
Yes, if your application needs fixed stops at 25 mm and 200 mm. The SCT integrates both strokes into one tie-rod body, reducing mounting hardware and eliminating the need to synchronize two separate actuators. Ensure the replacement matches the 40 mm bore, PT1/4 ports, and the -S magnet option for sensor compatibility.
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