This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X500S, 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 SU32~50 Standard Cylinder SU50X500S is a double-acting profile-type standard cylinder with a Ø50mm bore and 500mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X500S, which matches its bore, stroke, force and mounting.
The AirTAC SU50X500S is a discontinued double-acting profile-type cylinder with a 50mm bore and 500mm stroke. Delivering 982N push force at 0.5MPa via a 1/4" port, its direct replacement is the SAU50X500S, retaining identical body dimensions, force, and SC-series mounting.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace this unit's legacy CS1-B/DS1-B switches, and offers a SAUF valve-integrated variant the SU line lacked.
| Model | Airtac SU32~50 Standard Cylinder SU50X500S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X500S |
| Bore size | Ø50 mm |
| Stroke | 500 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAU50X500S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAU50X500S 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). |
|---|---|
| 50 | 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.
Pushes packages across a 500mm transfer gap on a sorting line, utilising the 982N push force at 0.5MPa to overcome guide friction.
Ejects machined parts from a fixture over a 500mm distance, where the adjustable 21mm cushions absorb the kinetic energy at stroke end.
To replace this SU50X500S, order the SAU50X500S, confirming the 50mm bore, 500mm stroke, 1/4" port, M16x1.5 rod thread, and SC-series mounting. Because the -S magnet is present, note that your legacy CS1-B/DS1-B switches must change to CMSG/DMSG/EMSG sensors on the SAU. If you need higher force, the 63mm bore yields 1559N push at 0.5MPa; if smaller fits, the 40mm bore yields 628N. For the 500mm stroke, use external guides to prevent rod bending and side-load wear. The air cushion only decelerates the piston; it does not hold load on air loss, so add an external rod lock or pilot-operated check valve for vertical lifts. Consider the SAUF variant if you need a built-in 4M solenoid valve.
Replacement checklist
Yes, the SU50X500S is discontinued. The direct replacement is the SAU50X500S. It shares the same 50mm bore, 500mm stroke, 1/4" port, output force, and SC-series mounting, but the SAU uses current CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B switches.
The 1/4" port feeds a piston delivering 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a theoretical max of 200kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X500S replacement — usually within 7-8 hours.