This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X475, 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 SU50X475 is a double-acting profile-type standard cylinder with a Ø50mm bore and 475mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X475, which matches its bore, stroke, force and mounting.
The AirTAC SU50X475 is a discontinued double-acting profile-type cylinder with a 50mm bore and 475mm stroke. It delivers 982 N push and 825 N pull at 0.5 MPa via a 1/4" port. AirTAC replaced this EOL unit with the SAU50X475, a direct upgrade retaining the exact body dimensions, force, and SC-series mounting.
The SAU50X475 modernizes the sensor groove for current CMSG/DMSG/EMSG switches (the SU used legacy CS1-B/DS1-B) and introduces the SAUF built-in 4M valve option. Note this SKU lacks a magnet and cannot accept switches, while the 475mm stroke requires external guides to prevent rod bending.
| Model | Airtac SU32~50 Standard Cylinder SU50X475 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X475 |
| Bore size | Ø50 mm |
| Stroke | 475 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 SAU50X475 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 SAU50X475 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. |
| ×475 | 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 transfer lines with a safe 589 N working load, utilizing the 475mm stroke to clear adjacent conveyor lanes.
Ejects machined parts from a fixture over a long distance, relying on the adjustable 21mm air cushions to decelerate the rod smoothly.
To replace the SU50X475, order the SAU50X475 with the same 50mm bore, 475mm stroke, 1/4" port, M16x1.5 rod thread, and SC-series mounting (LB/FA/FB/CA/CB). Because this SKU has no -S magnet, it cannot support position sensing; if you need switches, the SAU replacement requires CMSG/DMSG/EMSG sensors. For load holding, note that neither cylinder locks on air loss—use an external rod lock or pilot-operated check valve. With a 475mm stroke, use external guides to prevent rod bending under side loads. If you need more force, the 63mm bore offers 1559 N push at 0.5 MPa; if less is acceptable, the 40mm bore provides 628 N. The SAUF variant adds a built-in valve if you need self-switching.
Replacement checklist
Yes, the AirTAC SU50X475 is discontinued. The direct replacement is the SAU50X475. It matches the 50mm bore, 475mm stroke, 982 N force, 1/4" port, and SC-series mounting. The SAU also adds the SAUF built-in-valve option.
It delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. This specific SKU lacks a magnet, so it cannot take sensors. If sensing is needed, the SAU50X475 replacement uses CMSG/DMSG/EMSG switches (the SU used legacy CS1-B/DS1-B).
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X475 replacement — usually within 7-8 hours.