Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X10X325S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X10X325S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 10mm and 325mm give 4 controllable stop positions across a 335mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 110 mm
- Stroke 2325 mm
- Total travel335 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X10X325S
The AirTAC SCT40X10X325S is a double-acting multi-position tandem cylinder that delivers four discrete rod stops from two independent piston sections on a common 16 mm rod. By pressurising the short 10 mm section, the long 325 mm section, or both, the rod reaches exactly 0 mm, 10 mm, 325 mm, and the full combined 335 mm stroke. The built-in magnet lets CMSG/DMSG/EMSG sensors clamp directly to the tie-rod barrel for non-contact position confirmation at each stop.
Each 40 mm bore section generates 628 N of push force at 0.5 MPa (879 N at 0.7 MPa), giving consistent thrust whether you are making a fine 10 mm advance or driving the full 335 mm travel. The cylinder body has an A(SCT) length of 235 mm, uses PT1/4 ports, and features an adjustable air cushion of 21 mm to decelerate the piston smoothly. The operating range with standard TPU seals is -20 to +70 °C.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X10X325S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X10X325S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 10 / 325 mm |
| Total travel | 335 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) | 10 mm |
| P2 (section 2) | 325 mm |
| P3 (both extended) | 335 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 SCT40X10X325S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×10 | Stroke 1 (section 1) in mm. |
| ×325 | 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 SCT40X10X325S Is Used
Two-Depth Pressing
Use the 10 mm stroke for a light pre-press or part contact, then switch to the 325 mm section for the full insertion depth, giving two distinct pressing stages from one cylinder.
Multi-Stop Part Transfer
The 10 mm stop acts as a precise staging position before the 325 mm stroke moves a component onto a conveyor, with the magnet confirming arrival at each of the four positions.
Gauging with Long Reject Stroke
Advance 10 mm for a delicate gauging operation; if the part fails, fire the 325 mm section to push it into a reject chute at the full 335 mm position.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X10X325S the Right Cylinder?
Choose the SCT40X10X325S when a process needs a short precision stop and a longer transport stroke from one compact tandem unit instead of two separate cylinders with external hard stops. The 10 mm section is ideal for a fine positioning or clamping move, while the 325 mm section handles part transfer. If you require more force for the long stroke, stepping up to the 50 mm bore (SCT50X10X325, 982 N push at 0.5 MPa) is a direct path. For replacement, match the 40 mm bore, both 10 mm and 325 mm strokes, PT thread, the -S magnet, and the basic mounting configuration. Because the 325 mm stroke section is fully extended, ensure the rod is guided externally if the load applies any significant side force, to prevent bending of the 16 mm rod.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 10 + 325 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 SCT40X10X325S FAQ
It provides four distinct rod positions: 0 mm (fully retracted), 10 mm (first section extended), 325 mm (second section extended), and 335 mm (both sections extended, total travel). The built-in magnet allows sensors to verify each stop.
Yes, when the application needs two fixed strokes along the same axis. The SCT combines them into one tandem body, reducing mounting hardware and alignment effort. Ensure the replacement matches the 40 mm bore, 10 mm and 325 mm strokes, PT ports, and the -S magnet option.
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