Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X160S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X160S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 160mm give 4 controllable stop positions across a 185mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 125 mm
- Stroke 2160 mm
- Total travel185 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X160S
The SCT40X25X160S multi-position cylinder provides four distinct, repeatable stop locations along its 185 mm total travel: fully retracted (0 mm), 25 mm, 160 mm, and fully extended (185 mm). Each 40 mm bore piston section generates 628 N of push force at 0.5 MPa, making it a compact solution for sequencing two different advance lengths without complex controls.
This model includes a factory-installed magnetic piston band, allowing CMSG, DMSG, or EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position feedback. The 16 mm diameter hard-chrome plated rod and 21 mm adjustable air cushion at each end-cap ensure smooth deceleration, with a rigid body length of 235 mm (A dimension).
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X160S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X160S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 25 / 160 mm |
| Total travel | 185 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) | 160 mm |
| P3 (both extended) | 185 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 SCT40X25X160S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×160 | 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 SCT40X25X160S Is Used
Two-Stage Clamping
A low-force 25 mm stroke gently pre-positions a workpiece, followed by a full 160 mm stroke to apply clamping pressure, preventing damage to delicate parts.
Dual-Position Stop Gate
Operates a lane diverter on a conveyor with an intermediate stop at 25 mm for product spacing verification before the final 160 mm divert stroke.
Two-Depth Assembly Press
Installs a bushing to a shallow 25 mm depth, then a second component to a deeper 160 mm depth in a single automated assembly sequence.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X160S the Right Cylinder?
Choose the SCT tandem cylinder when a process requires two fixed, repeatable strokes from a single actuator, eliminating the cost and complexity of dual cylinders and bracketry. The 25 mm and 160 mm stroke combination is well-suited for a short initial advance followed by a longer feed or ejection movement. If higher thrust is needed, stepping up to the 50 mm bore provides 982 N of push per section at the same 0.5 MPa operating pressure. For direct replacement, match the 40 mm bore, both strokes (25 and 160 mm), PT port thread, and the built-in magnet suffix (-S).
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 160 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 SCT40X25X160S FAQ
This tandem cylinder reaches four discrete stop positions: 0 mm (fully retracted), 25 mm, 160 mm, and the combined total travel of 185 mm. These are achieved by pressurizing either piston section individually or both together.
Yes, the -S suffix indicates a built-in magnet, making it compatible with AirTAC CMSG, DMSG, and EMSG series sensors that mount externally on the cylinder's tie-rod barrel.
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