This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU32X500STC, 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 SU32X500STC is a double-acting profile-type standard cylinder with a Ø32mm bore and 500mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU32X500STC, which matches its bore, stroke, force and mounting.
The AirTAC SU32X500STC is a discontinued double-acting profile-type cylinder with a 32mm bore and 500mm stroke. Delivering 402N push force at 0.5MPa, it uses an extruded aluminum barrel that is shorter and more compact than an ISO 15552 cylinder of the same bore. AirTAC replaced this end-of-line unit with the SAU32X500STC, a direct replacement retaining the exact bore, stroke, output force, 1/8" port, and SC-series TC mounting.
When upgrading, note that the SAU body uses current CMSG/DMSG/EMSG sensors instead of this model's legacy CS1-B/DS1-B switches, and the SAU line adds a SAUF built-in-valve option the SU lacked. Because the 500mm stroke is long, prevent rod bending by guiding the load externally.
| Model | Airtac SU32~50 Standard Cylinder SU32X500STC |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU32X500STC |
| Bore size | Ø32 mm |
| Stroke | 500 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 SAU32X500STC 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 SAU32X500STC 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. |
| ×500 | 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 parts between stations where the shorter profile body saves space compared to standard ISO cylinders of the same bore.
To replace this discontinued SU32X500STC, order the SAU32X500STC. Confirm the 32mm bore, 500mm stroke, 1/8" port (PT/G/NPT), M10x1.25 rod thread, and TC mounting interface are retained. The built-in magnet means you must switch from legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. For sizing, this 32mm bore yields 402N push at 0.5MPa; if more force is needed, step up to the 40mm bore (628N). With a 500mm stroke, use an external guide to prevent rod bending and side-load damage. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock for held loads. The SAUF variant offers a built-in valve if self-switching is desired.
Replacement checklist
Yes, the SU32X500STC is discontinued. The direct replacement is the AirTAC SAU32X500STC. It shares the same 32mm bore, 500mm stroke, 402N output force, 1/8" port, and TC mounting, so it fits the same application without mechanical changes.
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 SU model has a magnet (-S), it used legacy CS1-B/DS1-B switches; the SAU replacement requires upgrading to CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU32X500STC replacement — usually within 7-8 hours.