Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X45S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X45S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 15mm and 45mm give 4 controllable stop positions across a 60mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 115 mm
- Stroke 245 mm
- Total travel60 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X45S
The SCT40X15X45S is a 40 mm bore multi-position air cylinder that provides four distinct mechanical stops along its stroke: 0 mm (fully retracted), 15 mm, 45 mm, and 60 mm total travel. By pressurising the two piston sections independently or together, you get repeatable positioning without complex servo controls. Each section generates 628 N of push force at 0.5 MPa, and the 16 mm diameter rod resists side-load deflection in compact setups.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the tie-rod barrel for end-of-stroke or mid-position confirmation. The cylinder uses a PT1/4 port, an M12x1.25 rod thread, and a 21 mm adjustable air cushion at each end to decelerate the piston smoothly. The body length A(SCT) is 235 mm, making it a space-efficient choice for multi-stop feeding or sorting stations.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X45S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X45S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 15 / 45 mm |
| Total travel | 60 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) | 15 mm |
| P2 (section 2) | 45 mm |
| P3 (both extended) | 60 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 SCT40X15X45S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×15 | Stroke 1 (section 1) in mm. |
| ×45 | 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 SCT40X15X45S Is Used
Two-Way Part Diverting
Use the four discrete stops to guide parts into two separate lanes on a conveyor. Retract to 0 mm for lane A, extend to 15 mm for lane B, 45 mm for lane C, or full 60 mm for a reject chute.
Multi-Depth Press-Fit Insertion
Insert bushings or pins to two different controlled depths in one cycle. The 15 mm and 45 mm stops set shallow and deep insertion points, with the magnet confirming each position before the next part arrives.
Staged Clamping Fixture
Build a fixture that clamps workpieces at three distinct pressure levels or jaw openings. The 0, 15, and 45 mm positions let you pre-locate, clamp, and then apply final holding force at 60 mm total travel.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X15X45S the Right Cylinder?
Choose the SCT40 when your application needs up to four fixed stopping points from a single compact actuator, avoiding the cost and alignment hassle of two separate cylinders with external hard stops. If you need higher thrust, the 50 mm bore SCT50 series offers 982 N push per section at the same 0.5 MPa pressure. For a direct replacement, match the 40 mm bore, both the 15 mm and 45 mm section strokes, the PT1/4 port thread, and the built-in magnet; the SCT mounting style (basic, FA, FB, CA, CB, or LB) must also be identical to preserve the mechanical interface.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 15 + 45 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 SCT40X15X45S FAQ
It provides four distinct mechanical stops because the two section strokes differ (15 mm and 45 mm). The rod positions are 0 mm (fully retracted), 15 mm, 45 mm, and the combined total of 60 mm. You select the stop by pressurising section one, section two, or both simultaneously.
Yes, if the original cylinder has a 40 mm bore, 15 mm and 45 mm strokes, and PT1/4 ports. The -S suffix adds a built-in magnet for sensor mounting, which does not change the envelope or mounting dimensions. Ensure the mounting bracket type (basic, FA, FB, CA, CB, or LB) matches your existing setup.
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