
The AirTAC Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X155X160S is a genuine double-acting MULTI-POSITION (tandem) air cylinder: two piston sections of 155mm and 160mm give 4 controllable stop positions across a 315mm total travel, with a Ø32mm bore, PT1/8 ports and adjustable end cushioning.
The SCT32X155X160S tandem cylinder delivers four distinct mechanical stop positions—0 mm, 155 mm, 160 mm, and the combined 315 mm total travel—by pressurising its two piston sections independently. Each 32 mm bore section generates 402 N of push force at 0.5 MPa (724 N at 0.9 MPa), driven through a 12 mm diameter piston rod with M10x1.25 rod-end threads.
This model includes a factory-installed magnetic piston ring (-S suffix), allowing CMSG, DMSG, or EMSG solid-state sensors to clamp directly onto the tie-rod barrel for non-contact position feedback at each stop. The cylinder body length is 233 mm plus strokes, and the PT1/8 ports accept standard pneumatic fittings. Adjustable air cushioning at both ends of each section decelerates the load smoothly, protecting the 21 mm cushion seals during high-cycle multi-stop sequencing.
| Model | Airtac SCT32-63 Multi-Position Tandem Air Cylinder SCT32X155X160S |
|---|---|
| Series | SCT multi-position tie-rod cylinder |
| Bore size | Ø32 mm |
| Stroke 1 / Stroke 2 | 155 / 160 mm |
| Total travel | 315 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) | 155 mm |
| P2 (section 2) | 160 mm |
| P3 (both extended) | 315 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). |
| ×155 | Stroke 1 (section 1) in mm. |
| ×160 | 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.
The 155 mm and 160 mm stroke sections create a tight 5 mm offset between the second and third positions, enabling a diverter gate to sort components by a small dimensional difference—such as separating parts with a thin flange from those without—at up to 800 mm/s.
Use the four discrete stops (0, 155, 160, 315 mm) to control a press tool at two distinct insertion depths. The 724 N thrust at 0.9 MPa per section provides consistent force for installing seals or bushings to different set depths in a single cycle.
The magnetic piston enables sensor confirmation at all four positions, making this cylinder suitable for a shuttle table that moves between a home position, a 155 mm pre-load station, a 160 mm inspection stop, and the full 315 mm unload point.
Choose the SCT32X155X160S when an application needs four fixed rod positions without the complexity of two separate cylinders and external hard stops. The unequal strokes (155 mm and 160 mm) create closely spaced intermediate positions ideal for two-stage sorting gates or shuttles where a small offset differentiates part sizes. If higher force is required, step up to the SCT40 bore, which provides 628 N of push per section at the same 0.5 MPa pressure.
For drop-in replacement, match the 32 mm bore, both the 155 mm and 160 mm section strokes, the PT1/8 port thread, and the built-in magnet (-S). This basic-mount model uses the cylinder body for support; if panel mounting is preferred, select an SCT32X155X160SFA version with a front rectangular flange. With a total travel of 315 mm, ensure the rod is externally guided if significant side loads are present to prevent bending of the 12 mm rod.
Multi-position checklist
This tandem cylinder provides four discrete mechanical stop positions: fully retracted (0 mm), the first section extended (155 mm), the second section extended (160 mm), and both sections extended for the total travel (315 mm). The positions are fixed by the two stroke lengths and are selected by pressurising the appropriate cylinder sections.
Yes, the SCT32X155X160S can often replace two individually mounted 32 mm cylinders with external stops set at 155 mm and 160 mm. It provides the same four positions in a single, aligned package with a common rod axis, simplifying mounting and eliminating the need to synchronise two separate actuators. Ensure the replacement matches the 32 mm bore, both stroke lengths, PT1/8 ports, and the magnetic piston option.
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