Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X25
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X25 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 25mm give 3 controllable stop positions across a 50mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 125 mm
- Stroke 225 mm
- Total travel50 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X25
The SCT40X25X25 is a double-acting, multi-position tandem cylinder that provides three fixed rod positions: fully retracted (0 mm), 25 mm, and 50 mm total travel. Each 40 mm bore piston section delivers 628 N of push force at 0.5 MPa, making it suitable for compact, repetitive two-stop indexing tasks.
This tie-rod cylinder features a 16 mm diameter rod and M12x1.25 rod thread for secure tooling attachment. With a body length A of 235 mm and an adjustable air cushion length of 21 mm, it offers smooth deceleration at both ends of the stroke, protecting the assembly from impact.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X25 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X25 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 25 / 25 mm |
| Total travel | 50 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 25 mm |
| P2 (both extended) | 50 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 SCT40X25X25
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×25 | 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 SCT40X25X25 Is Used
Two-Way Part Diverting
Uses the 25 mm and 50 mm stops to guide parts into two separate chutes from a single conveyor lane, simplifying the sorting mechanism.
Multi-Level Pallet Stop
Provides a low-profile stop at 25 mm for light totes and a higher stop at 50 mm for larger boxes, controlling flow in gravity conveyor sections.
Dual-Depth Label Press
Applies consistent pressure at two set depths for applying labels to recessed and flush surfaces on the same product line.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X25 the Right Cylinder?
Choose the SCT40X25X25 when a single actuator must reach two distinct extended positions without external hard stops or a second cylinder. The 25 mm stroke sections provide a compact solution for short-travel sorting or diverting. If higher force is needed, consider stepping up to the 50 mm bore SCT50X25X25, which provides 982 N of push per section at the same pressure. For replacement, match the 40 mm bore, both 25 mm strokes, PT port thread, and basic mounting to ensure identical fit and function.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 25 + 25 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 SCT40X25X25 FAQ
This model has 3 discrete positions because both stroke sections are equal at 25 mm. The rod can be positioned at 0 mm (fully retracted), 25 mm, and 50 mm (fully extended).
Yes, it often can. The SCT40X25X25 provides two controlled stop positions in one assembly, reducing mounting hardware and eliminating the need to synchronize two separate actuators. Ensure the per-section force of 628 N at 0.5 MPa meets your load requirements at each stop.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCT Multi-Position Cylinders
Request a Quote for Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X25
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.