
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X30X25S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 30mm and 25mm give 4 controllable stop positions across a 55mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
The SCT32X30X25S is a double-acting multi-position cylinder that delivers four fixed rod positions from two independent piston sections on a single axis. With strokes of 30 mm and 25 mm, the accessible stops are 0 mm (fully retracted), 30 mm, 25 mm, and the total travel of 55 mm, enabling a compact four-stop sequence without complex external hard stops.
Each 32 mm bore section generates 402 N of push force at 0.5 MPa and up to 724 N at the maximum operating pressure of 0.9 MPa, using a 12 mm diameter piston rod. The built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors for non-contact position feedback, and the tie-rod construction houses a 21 mm air cushion for smooth end-of-stroke deceleration.
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X30X25S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 30 / 25 mm |
| Total travel | 55 mm |
| Stop positions | 4 positions |
| Acting type | Double acting (tandem, multi-position) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| 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.
| Position | Rod extension |
|---|---|
| P0 (retracted) | 0 mm |
| P1 (section 1) | 30 mm |
| P2 (section 2) | 25 mm |
| P3 (both extended) | 55 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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.
| SCT | Multi-position (tandem) tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm (SCT range 32–100). |
| ×30 | Stroke 1 (section 1) in mm. |
| ×25 | 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.
Positions a diverter chute to three distinct paths using the 0, 25, and 55 mm stops, directing small parts in packaging or assembly lines.
Provides three precise mechanical stops for a workpiece carrier, allowing a tool to approach at 30 mm, 25 mm, or full retraction without reprogramming.
Ejects parts in a two-step sequence: a partial push to 25 mm for inspection, followed by a full 55 mm stroke to clear the part from the nest.
This four-position configuration suits applications where a short, asymmetric stroke sequence is needed from a single compact unit. When the 402 N per-section push force is insufficient, stepping up to the 40 mm bore SCT provides 628 N per section at the same pressure. For replacement, match the 32 mm bore, the exact 30 mm and 25 mm section strokes, the PT port thread, and the built-in magnet suffix -S. The basic mounting style requires no additional brackets, but FA, FB, CA, CB, or LB mounts can be added if the original unit used them.
Multi-position checklist
It provides four discrete rod positions: 0 mm (retracted), 30 mm (first section extended), 25 mm (second section extended), and 55 mm (both sections extended, total travel).
Yes, if your application currently uses two separate 32 mm bore cylinders with 30 mm and 25 mm strokes to achieve three or four stops. This tandem unit consolidates them onto one rod line, saving space and simplifying plumbing. Ensure the port thread (PT), basic mounting, and the -S magnet sensor compatibility match your existing setup.
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