This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X750S, 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 SU50X750S is a double-acting profile-type standard cylinder with a Ø50mm bore and 750mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X750S, which matches its bore, stroke, force and mounting.
The AirTAC SU50X750S is a discontinued double-acting profile-type cylinder with a 50mm bore and 750mm stroke. It delivers 982N push force at 0.5MPa via a 1/4" port. AirTAC replaced this legacy unit with the SAU50X750S, a direct upgrade retaining the exact bore, stroke, output force, and SC-series mounting footprint.
The SAU upgrade introduces CMSG/DMSG/EMSG sensors to replace this model's legacy CS1-B/DS1-B switches, and adds the new SAUF built-in-valve option. The extruded aluminum profile is shorter than an ISO 15552 cylinder of the same bore.
| Model | Airtac SU32~50 Standard Cylinder SU50X750S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X750S |
| Bore size | Ø50 mm |
| Stroke | 750 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 SAU50X750S 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 SAU50X750S 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. |
| ×750 | 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 750mm conveyor lane using the 982N push force at 0.5 MPa, requiring external guides to prevent rod bending over the long travel.
Ejects machined parts from a fixture, using the adjustable 21mm air cushions at both ends to decelerate the 20mm rod smoothly at cycle completion.
To replace the SU50X750S, order the SAU50X750S direct equivalent, verifying the 1/4" port, M16x1.5 rod thread, and SC-series mounting. Because this SKU includes a magnet (-S), note that your legacy CS1-B/DS1-B switches must change to the current CMSG/DMSG/EMSG family on the SAU. For a 750mm stroke, prevent rod bending by guiding the load externally to avoid side-loading. If stepping down to a 40mm bore yields 628N (insufficient), the 63mm bore offers 1559N. A plain cylinder drifts without live air; the cushions only decelerate. For load holding on air loss, install an external rod lock or pilot-operated check valve.
Replacement checklist
Yes, the AirTAC SU50X750S is discontinued. The direct replacement is the SAU50X750S. It shares the same 50mm bore, 750mm stroke, 982N force, 1/4" port, and SC-series mounting accessories, so it fits the same application directly.
The bore delivers 982N push and 825N pull at 0.5 MPa, 1374N push at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. Because this is an -S magnet model, the legacy CS1-B/DS1-B switches are obsolete; the SAU replacement requires the current CMSG/DMSG/EMSG sensor family.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X750S replacement — usually within 7-8 hours.