Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X145X50S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X145X50S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 145mm and 50mm give 4 controllable stop positions across a 195mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 1145 mm
- Stroke 250 mm
- Total travel195 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X145X50S
The SCT40X145X50S tandem cylinder provides four fixed rod positions—0 mm, 145 mm, 50 mm, and the combined 195 mm stroke—by independently pressurising its two 40 mm bore sections. Each piston delivers a push force of 628 N at 0.5 MPa (1130 N at 0.9 MPa), driven through a 16 mm diameter rod with M12x1.25 mounting threads.
An integrated magnet allows direct mounting of CMSG or DMSG sensors along the tie-rod barrel for contactless position feedback at every stop. The cylinder body has an A-length of 235 mm, uses PT1/4 ports, and includes adjustable air cushioning with a 21 mm cushion length to decelerate the load smoothly at each end of the total travel.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X145X50S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X145X50S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 145 / 50 mm |
| Total travel | 195 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) | 145 mm |
| P2 (section 2) | 50 mm |
| P3 (both extended) | 195 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 SCT40X145X50S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×145 | Stroke 1 (section 1) in mm. |
| ×50 | 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 SCT40X145X50S Is Used
Two-Stage Sorting Gate
Uses the 145 mm stroke for a primary divert and the 50 mm stroke for a secondary reject lane, giving four gate positions from one compact actuator.
Multi-Depth Pressing
Provides two controlled pressing depths (145 mm and 195 mm) plus a partial retract at 50 mm for part ejection, all with sensor confirmation via the built-in magnet.
Staggered Part Feeding
Advances parts at two different pitches on a conveyor line—a long 145 mm push followed by a short 50 mm index—to handle mixed product sizes in one cycle.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X145X50S the Right Cylinder?
Choose this SCT when a process needs four distinct mechanical stops without the complexity of two separate cylinders and external hard stops. The 145 mm and 50 mm stroke combination suits applications where one long advance and a short secondary positioning move are required. If higher force is needed, stepping up to the 50 mm bore SCT50 provides 982 N of push per section at the same pressure. For a direct replacement, match the 40 mm bore, both strokes (145 mm and 50 mm), the PT port thread, basic mounting, and the -S magnet option to retain sensor compatibility.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 145 + 50 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 SCT40X145X50S FAQ
This tandem cylinder provides four discrete mechanical stops: fully retracted (0 mm), first section extended (145 mm), second section extended (50 mm), and both sections extended for the total travel of 195 mm. The stops are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, in many cases it can replace two separate cylinders and their mounting hardware with a single, compact tandem unit. Ensure the replacement matches the 40 mm bore, the exact 145 mm and 50 mm stroke combination, the PT1/4 port thread, and the -S magnet option if your application uses reed or solid-state sensors for position feedback.
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