Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200 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 SCT40X25X200
The SCT40X25X200 is a tandem multi-position cylinder that delivers four fixed rod positions from two independent piston sections: 0 mm (fully retracted), 25 mm, 200 mm, and the combined total travel of 225 mm. Each 40 mm bore section generates a push force of 628 N at 0.5 MPa, rising to 1130 N at the 0.9 MPa maximum operating pressure, driven through a 16 mm diameter piston rod.
This tie-rod cylinder uses PT1/4 ports and has a 21 mm adjustable air cushion at each end to manage deceleration. The body length A(SCT) is 235 mm, and the standard TPU seals suit a working temperature range of -20 to +70 °C. With a short 25 mm first stroke and a longer 200 mm second stroke, this configuration is ideal for applications needing a precise partial advance followed by a full extension to a second working point.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200 |
|---|---|
| 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 SCT40X25X200
| 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 SCT40X25X200 Is Used
Two-Stage Clamping
A 25 mm advance positions a low-force locating pin, followed by a 200 mm stroke to engage a high-force clamp, all from one cylinder body.
Dual-Position Sorting Gate
Directs parts to two different chutes by stopping the gate at 25 mm for the first lane and 200 mm for the second, with the 225 mm position serving as a third bypass lane.
Multi-Stop Pusher
Pushes products to a first inspection station at 25 mm and a second packing station at 200 mm on a conveyor line, simplifying the actuator layout.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X200 the Right Cylinder?
Selecting an SCT provides four mechanical stops in a single, compact assembly, eliminating the need to synchronize two separate cylinders and their external stop hardware. When stepping up in bore for more force, the SCT50 series offers 982 N of push per section at 0.5 MPa, while stepping down to the SCT32 provides 402 N. For replacement, match the 40 mm bore, both the 25 mm and 200 mm strokes, PT port thread, and the basic mounting configuration. The 200 mm second stroke is within standard limits, but ensure the rod is guided if significant side loads are present during the long extension.
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 SCT40X25X200 FAQ
This tandem cylinder provides four discrete mechanical stops. The rod positions are 0 mm (fully retracted), 25 mm (first section extended), 200 mm (second section extended), and 225 mm (both sections extended for total travel).
The SCT40X25X200 integrates both strokes onto a single common rod, guaranteeing the 25 mm and 200 mm positions are fixed relative to each other without external brackets or alignment. This saves space and eliminates the complexity of sequencing two separate actuators to achieve the same four-position sequence.
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