Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X175S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X175S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 75mm and 175mm give 4 controllable stop positions across a 250mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 175 mm
- Stroke 2175 mm
- Total travel250 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X175S
The AirTAC SCT50X75X175S is a 50 mm bore multi-position tandem cylinder that delivers four distinct, repeatable rod stops without external hard stops or complex controls. By pressurising its two piston sections independently or together, the rod locates precisely at 0 mm (retracted), 75 mm, 175 mm, and the full combined travel of 250 mm. Each section generates a push force of 982 N at 0.5 MPa, rising to 1767 N at the 0.9 MPa maximum operating pressure, driven through a rigid 20 mm diameter piston rod.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG solid-state sensors along the tie-rod barrel for non-contact position confirmation at any of the four stops. The cylinder body has a base length of 243 mm and uses an adjustable pneumatic cushion (21 mm long) to decelerate the piston smoothly at each end of the total stroke. Standard PT ports (PT1/4) and an M16x1.5 rod thread keep integration straightforward for multi-stop feeding or sorting tasks.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X175S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X175S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 75 / 175 mm |
| Total travel | 250 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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) | 75 mm |
| P2 (section 2) | 175 mm |
| P3 (both extended) | 250 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SCT50X75X175S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×75 | Stroke 1 (section 1) in mm. |
| ×175 | 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 SCT50X75X175S Is Used
Four-Position Diverter Gate
Directs product flow to one of four chutes or lanes by stopping the rod at 0, 75, 175, or 250 mm, with sensor feedback confirming each gate position.
Two-Depth Pressing & Staking
Provides a shallow 75 mm approach and a deep 175 mm pressing stroke, plus a combined 250 mm stroke for part ejection, all from one tandem cylinder.
Multi-Stop Part Feeding
Advances components in three precise increments (75, 100, and 75 mm) along a linear track, using the magnet sensors to trigger the next feed cycle.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X75X175S the Right Cylinder?
Select the SCT50X75X175S when your application needs four fixed axial positions from a single compact actuator, avoiding the alignment drift and plumbing of two separate cylinders. The 75 mm and 175 mm strokes provide an asymmetric stop pattern ideal for two-depth pressing or a three-bin diverter. If your load requires more force per section, step up to the SCT63 bore (1559 N push at 0.5 MPa); for a lighter, faster-moving load, the SCT40 bore (628 N push) may reduce cycle time. This cylinder is a direct replacement only for an identical AirTAC SCT50X75X175S with the magnet option—verify both stroke sections, the PT1/4 port thread, and the basic (no bracket) mounting configuration. With the longer 175 mm section stroke, ensure the guided load is supported to prevent rod bending or side-load wear.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 75 + 175 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 SCT50X75X175S FAQ
This tandem cylinder provides four discrete rod positions: fully retracted (0 mm), the first section extended (75 mm), the second section extended (175 mm), and both sections extended together for the total travel (250 mm). The stops are fixed by the two stroke lengths and are not infinitely adjustable.
Yes, the SCT50X75X175S is a direct, more compact replacement for two individually mounted SC cylinders that were sequenced for multi-stop motion. It eliminates the need for external brackets, alignment, and dual valve control. Ensure the replacement matches the 50 mm bore, both 75 mm and 175 mm stroke sections, the PT1/4 ports, and the integrated magnet sensor option.
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