Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X35X65S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X35X65S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 35mm and 65mm give 4 controllable stop positions across a 100mm total travel, with a Ø50mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Stroke 135 mm
- Stroke 265 mm
- Total travel100 mm
- Positions4 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X35X65S
The SCT50X35X65S is a double-acting multi-position cylinder that provides four fixed rod positions: 0 mm (fully retracted), 35 mm, 65 mm, and a total extended travel of 100 mm. By pressurizing its two 50 mm bore piston sections independently or together, it offers discrete, repeatable stopping points without complex servo controls. Each section generates a push force of 982 N at 0.5 MPa, rising to 1767 N at the maximum operating pressure of 0.9 MPa.
This model includes a built-in magnet, allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for non-contact position sensing. The 20 mm diameter piston rod and PT1/4 ports ensure robust flow and mechanical strength. With a 21 mm adjustable air cushion and a body length of 243 mm, it provides reliable end-of-stroke deceleration for high-cycle applications.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X35X65S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X35X65S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke 1 / Stroke 2 | 35 / 65 mm |
| Total travel | 100 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) | 35 mm |
| P2 (section 2) | 65 mm |
| P3 (both extended) | 100 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 SCT50X35X65S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm (SCT range 32–100). |
| ×35 | Stroke 1 (section 1) in mm. |
| ×65 | 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 SCT50X35X65S Is Used
Two-Stage Diverter Gate
Uses the 35 mm and 65 mm stops to direct product flow to three separate conveyor lanes, providing a compact alternative to dual-actuator gate systems.
Multi-Depth Pressing
Achieves two distinct pressing depths at 35 mm and 65 mm for assembly operations, ensuring consistent part insertion without tooling changes.
Sequential Clamping
Applies a light pre-clamp at the 35 mm position before full clamping force at 65 mm, protecting delicate workpieces during automated machining.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT50X35X65S the Right Cylinder?
Select this 4-position cylinder when your process requires two independent, fixed intermediate stops plus full retract and extend, eliminating the need for two separate cylinders and external hard stops. The 35 mm and 65 mm strokes give asymmetric positioning ideal for two-step feeding or sorting. If a higher force is needed, stepping up to the 63 mm bore provides 1559 N of push per section at 0.5 MPa. For a direct replacement, match the 50 mm bore, both 35 mm and 65 mm strokes, PT port thread, and the -S magnet option; the basic mounting configuration allows flexible integration with standard SCT foot or flange accessories.
Multi-position checklist
- ✓ Need 4 repeatable stops?
- ✓ Section strokes 35 + 65 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 SCT50X35X65S FAQ
This tandem cylinder provides four discrete rod positions: 0 mm (retracted), 35 mm, 65 mm, and 100 mm (total travel). The positions are achieved by pressurizing the first section, the second section, or both simultaneously.
The force is generated per single piston section. At 0.5 MPa, each section provides 982 N of push force and 825 N of pull force. The maximum push force per section at 0.9 MPa is 1767 N. The two sections do not combine their force for a single push.
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