This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAU50X510S, 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 SU50X510S is a double-acting profile-type standard cylinder with a Ø50mm bore and 510mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAU50X510S, which matches its bore, stroke, force and mounting.
The AirTAC SU50X510S is a discontinued double-acting profile-type cylinder with a 50mm bore and 510mm stroke. Delivering 982 N push force at 0.5 MPa, it features an extruded aluminum barrel and adjustable air cushions at both ends. AirTAC replaced this legacy unit with the SAU50X510S, a direct replacement retaining the exact bore, stroke, output force, 1/4" port, and SC-series mounting compatibility.
Because this SKU includes a magnet (-S), it originally used CS1-B/DS1-B switches; upgrading to the SAU requires switching to current CMSG/DMSG/EMSG sensors. The SAU family also introduces a SAUF variant with a built-in 4M solenoid valve the SU lacked.
| Model | Airtac SU32~50 Standard Cylinder SU50X510S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAU50X510S |
| Bore size | Ø50 mm |
| Stroke | 510 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 SAU50X510S 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 SAU50X510S 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. |
| ×510 | 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 medium-weight cartons off a main conveyor line using the 982 N push force, with the 510mm stroke reaching across the belt.
Actuates pusher arms to index or align pallets in a staging zone, benefiting from the compact profile body to save floor space.
To replace this SU50X510S, order the SAU50X510S and confirm the 50mm bore, 510mm stroke, 1/4" port, M16x1.5 rod thread, and SC-series mounting. The -S magnet means you must upgrade your sensors: the legacy CS1-B/DS1-B switches will not fit the SAU, so select current CMSG/DMSG/EMSG reed switches. If you need integrated flow control, explore the SAUF variant with its built-in 4M valve. For loads requiring 1374 N push at 0.7 MPa, the 50mm bore is adequate, but if you need more force, step up to the 63mm bore (1559 N at 0.5 MPa). Note that a plain cylinder drifts without live air—the cushions only decelerate—so add an external rod lock or pilot-operated check valve for load holding. Finally, at 510mm stroke, prevent rod bending by guiding the load externally to avoid side-loading.
Replacement checklist
Yes, the AirTAC SU50X510S is discontinued and end-of-life. The direct replacement is the SAU50X510S. It shares the identical 50mm bore, 510mm stroke, output force, 1/4" port, and SC-series mounting, so it fits the same application. You simply order the SAU50X510S.
The 50mm bore provides 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. Because this is an -S magnet model, it used legacy CS1-B/DS1-B switches; the SAU50X510S replacement requires upgrading to CMSG/DMSG/EMSG sensors.
Send us the quantity and destination. We confirm price, stock and lead time on the SAU50X510S replacement — usually within 7-8 hours.