This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU32X540S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.

The AirTAC Airtac SU32~50 Standard Cylinder SU32X540S is a double-acting profile-type standard cylinder with a Ø32mm bore and 540mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU32X540S, which matches its bore, stroke, force and mounting.
The AirTAC SU32X540S is a discontinued double-acting profile cylinder with a 32mm bore and 540mm stroke. Delivering 402N push force at 0.5MPa, its direct replacement is the SAU32X540S, retaining the same body dimensions, 1/8" port, and SC-series mounting compatibility.
Because this SKU includes a magnet (-S), it originally used legacy CS1-B/DS1-B switches, whereas the SAU successor upgrades to CMSG/DMSG/EMSG sensors. The SAU line also introduces a SAUF valve-integrated variant the SU lacked.
| Model | Airtac SU32~50 Standard Cylinder SU32X540S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU32X540S |
| Bore size | Ø32 mm |
| Stroke | 540 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| 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 standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU32X540S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAU32X540S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×540 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Moves standard component trays along a guided track, utilizing the 540mm stroke to span wider machine gaps during transfer operations.
Ejects machined small parts from a fixture, benefiting from the shorter profile body to save valuable machine floor space.
To replace this SU32X540S, order the SAU32X540S, confirming the 540mm stroke, 1/8" port, M10x1.25 rod thread, and SC-series mounting. If sizing alternatives, neighbouring bores (40mm) yield 628N push at 0.5MPa, while dropping to 0.5MPa on this 32mm bore provides 402N. The -S magnet means your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the SAU. Note: air cushions only decelerate; use an external rod lock or pilot-operated check valve to hold loads. At 540mm, prevent rod bending by guiding the load externally. Consider the SAUF variant if you need a built-in 4M solenoid valve.
Replacement checklist
Yes, the AirTAC SU32X540S is discontinued. The direct replacement is the SAU32X540S. It matches the 32mm bore, 540mm stroke, output force, 1/8" port, and SC-series mounting accessories. You simply order the SAU equivalent.
At 0.5MPa it pushes 402N and pulls 345N; at 0.7MPa it pushes 563N, with a theoretical max of 82kgf at 1.0MPa. Because this is an -S magnet model, the legacy CS1-B/DS1-B switches are retired; the SAU replacement uses current CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU32X540S replacement — usually within 7-8 hours.