Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X475
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X475 is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 25mm and 475mm give 4 controllable stop positions across a 500mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 125 mm
- Stroke 2475 mm
- Total travel500 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X475
The SCT40X25X475 tandem cylinder delivers four fixed rod positions—0 mm, 25 mm, 475 mm, and the full 500 mm extension—by combining two piston sections on a common 16 mm rod. With a per-section push force of 628 N at 0.5 MPa and a maximum thrust of 1130 N at 0.9 MPa, it handles multi-stop indexing tasks without complex servo controls.
This tie-rod design features a 21 mm adjustable air cushion at each end and a compact body length A of 235 mm, making it easy to fit into tight machine envelopes. The PT1/4 ports and TPU seals suit standard filtered-air systems operating between -20 and +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X475 Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X475 |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 25 / 475 mm |
| Total travel | 500 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) | 475 mm |
| P3 (both extended) | 500 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 SCT40X25X475
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×25 | Stroke 1 (section 1) in mm. |
| ×475 | 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 SCT40X25X475 Is Used
Two-Depth Press Insertion
Use the 25 mm stroke for a light pre-load position and the 475 mm stroke for full-depth insertion, giving a precise two-step assembly sequence from one cylinder.
Long-Reach Gate Diverter
The 475 mm stroke fully retracts a gate blade from a conveyor, while the 25 mm stroke provides a partial-open position for sorting small versus large packages.
Multi-Stop Part Transfer
Index a transfer shuttle to a 25 mm pick position, a 475 mm intermediate inspection stop, and a 500 mm final drop-off point using simple 5/3 valve control.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X25X475 the Right Cylinder?
Choose the SCT40X25X475 when your process needs a short first move and a long second stroke from a single rod line, eliminating the cost and synchronization logic of two separate cylinders. If higher force is required, stepping up to the 50 mm bore provides 982 N push per section at 0.5 MPa, while the 32 mm bore offers 402 N for lighter loads. For direct replacement, match the 40 mm bore, both the 25 mm and 475 mm strokes, PT port thread, and basic mounting; adding the -S magnet option enables CMSG/DMSG sensor feedback. Because the 475 mm section stroke is long, ensure the rod is externally guided if side loads are present to prevent bending.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 25 + 475 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 SCT40X25X475 FAQ
This tandem cylinder provides four discrete mechanical stops: fully retracted (0 mm), the first section extended (25 mm), the second section extended (475 mm), and both sections extended for the total travel of 500 mm. It does not offer infinitely variable positioning.
Yes, it can replace two separate 40 mm bore cylinders with 25 mm and 475 mm strokes in applications requiring sequential, fixed-position moves. Ensure the replacement matches the PT1/4 port thread, basic mounting, and that your valve arrangement can independently pressurize each section.
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 SCT40X25X475
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.