Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X90S
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X90S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 90mm and 90mm give 3 controllable stop positions across a 180mm total travel, with a Ø40mm bore, PT1/4 ports and adjustable end cushioning.
- BoreØ40 mm
- Stroke 190 mm
- Stroke 290 mm
- Total travel180 mm
- Positions3 stops
- Port sizePT1/4
About the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X90S
The SCT40X90X90S is a double-acting multi-position pneumatic cylinder that delivers three fixed rod positions: fully retracted (0 mm), 90 mm, and 180 mm total travel. Each of its two 40 mm bore sections generates 628 N of push force at 0.5 MPa, making it a compact solution for tasks requiring precise, repeatable intermediate stops without complex servo controls.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG sensors on the tie-rod barrel for reliable end-of-stroke and mid-stroke position feedback. The 16 mm diameter piston rod and 21 mm air cushion at each end provide robust guidance and smooth deceleration, while the PT1/4 ports keep connections standard.
Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X90S Technical Specifications
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X90S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke 1 / Stroke 2 | 90 / 90 mm |
| Total travel | 180 mm |
| Stop positions | 3 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 (3)
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 90 mm |
| P2 (both extended) | 180 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 SCT40X90X90S
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm (SCT range 32–100). |
| ×90 | Stroke 1 (section 1) in mm. |
| ×90 | 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 SCT40X90X90S Is Used
3-Position Sorting Gate
Use the three distinct stops (0, 90, 180 mm) to divert packages or parts to three separate conveyor lanes. The built-in magnet confirms the gate is clear at each position before the next item arrives.
Two-Depth Pressing
Actuate the first section for a 90 mm partial-engagement press stroke, then pressurize both sections for the full 180 mm travel to complete a two-stage assembly or forming operation.
Multi-Stop Part Feeding
Control a feed mechanism to advance material by a precise 90 mm, then a further 90 mm, for a total 180 mm index. Sensor feedback at each stop ensures accurate placement.
Is the Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT40X90X90S the Right Cylinder?
Choose the SCT tandem cylinder when your application needs a fixed intermediate stop and a full-extend position from a single pneumatic unit, avoiding the cost and complexity of two separate cylinders with external stops. The 40 mm bore provides 628 N of push force per section at 0.5 MPa; if you require higher force, stepping up to the 50 mm bore (SCT50) delivers 982 N per section.
For a direct replacement, match the 40 mm bore, both 90 mm strokes, PT port thread, and the built-in magnet (-S). This basic mounting version accepts the full range of SCT accessories, including FA/FB flanges, CA/CB clevises, and LB feet, which can be ordered separately and attached to the tie-rod body.
Multi-position checklist
- ✓ Need 3 repeatable stops?
- ✓ Section strokes 90 + 90 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 SCT40X90X90S FAQ
This cylinder provides 3 discrete mechanical stops because both strokes are equal (90 mm). The rod positions are 0 mm (fully retracted), 90 mm (one section extended), and 180 mm (both sections extended, total travel).
Yes, if your sequence requires a 90 mm and a 180 mm stop. The SCT40X90X90S consolidates two strokes into one tandem body, saving space and eliminating the need to synchronize separate cylinders. Ensure the bore, both strokes, PT ports, and magnet option match your current setup.
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